FITS-Dictionary.json

{
  "fitsKeyInfo": [
    {
      "name": "DATE",
      "description": "The date on which  the HDU was created, in the format specified in the FITS Standard. The old date format was ‘yy/mm/dd’ and may be used only for dates from 1900 through 1999. The new Y2K compliant date format is ‘yyyy-mm-dd’ or ‘yyyy-mm- ddTHH:MM:SS[.sss] ’.",
      "type": "string",
      "units": "NoUnits",
      "source": {}
    },
    {
      "name": "DATE-OBS",
      "description": "The date of the observation, in the format specified in the FITS Standard. The old date format was ‘yy/mm/dd’ and may be used only for dates from 1900 through 1999. The new Y2K compliant date format is ‘yyyy- mm-dd’ or ‘yyyy- mm- ddTHH:MM:SS[.sss] ’.",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "ESW",
        "componentName": "TopLevelSequencer",
        "eventName": "ObservationDetails",
        "parameterName": "observationStartDateTime"
      }
    },
    {
      "name": "OBJECT",
      "description": "The value field shall contain a character string giving a name or type of the object observed. Often ‘TARGNAME’ is used for target name, in which case ‘OBJECT’ can be used to specify the object category.",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "ESW",
        "componentName": "TopLevelSequencer",
        "eventName": "object",
        "parameterName": "name"
      }
    },
    {
      "name": "OBSERVER",
      "description": "The value field shall contain a character string identifying who acquired the data associated with the header.",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "ESW",
        "componentName": "TopLevelSequencer",
        "eventName": "ObservationDetails",
        "parameterName": "observer"
      }
    },

    {
      "name": "CRPIX1",
      "description": "This is the X coordinate of the reference pixel in the image",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CRPIX1"
      }
    },
    {
      "name": "CRPIX2",
      "description": "This is the Y coordinate of the reference pixel in the image",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CRPIX2"
      }
    },
    {
      "name": "CRVAL1",
      "description": "This is the Right ascension at the reference pixel",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CRVAL1"
      }
    },
    {
      "name": "CRVAL2",
      "description": "This is the Declination at the reference pixel",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CRVAL2"
      }
    },
    {
      "name": "CTYPE1",
      "description": "This is the Projection type RA---TAN",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CTYPE1"
      }
    },
    {
      "name": "CTYPE2",
      "description": "This is the Projection type DEC—TAN",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CTYPE2"
      }
    },
    {
      "name": "CD1_1",
      "description": "Projection of unit vector of axis 1 of one coordinate system with respect to axis 1 of the other coordinate system",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CD1_1"
      }
    },
    {
      "name": "CD1_2",
      "description": "Projection of unit vector of axis 1 of one coordinate system with respect to axis 2 of the other coordinate system",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CD1_2"
      }
    },
    {
      "name": "CD2_1",
      "description": "Projection of unit vector of axis 2 of one coordinate system with respect to axis 1 of the other coordinate system",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CD2_1"
      }
    },
    {
      "name": "CD2_2",
      "description": "Projection of unit vector of axis 2 of one coordinate system with respect to axis 2 of the other coordinate system",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "CD2_2"
      }
    },
    {
      "name": "RADECSYS",
      "description": "Reference frame of equatorial or ecliptic coordinates",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "WCSFITSHeader",
        "parameterName": "RADECSYS"
      }
    },
    {
      "name": "EQUINOX",
      "description": "The value field shall contain a floating point number giving the equinox in years for the celestial coordinate system in which positions are expressed. The interpretation of epoch depends upon the value of RADESYSa if present: Besselian if the value is FK4 or FK4-NO-E, Julian if the value is FK5; not applicable if the value is ICRS or GAPPT.",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "PointingKernelAssembly",
        "eventName": "CurrentPosition",
        "parameterName": "Equinox"
      }
    },
    {
      "name": "RA",
      "description": "Current right ascension (ICRS, at equinox)",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "ra"
      }
    },
    {
      "name": "DEC",
      "description": "Current declination (ICRS, at equinox)",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "dec"
      }
    },
    {
      "name": "PARANG",
      "description": "Current parallactic angle (ICRS, at equinox)",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "parallactic"
      }
    },
    {
      "name": "AZ",
      "description": "Current Azimuth",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "az"
      }
    },
    {
      "name": "EL",
      "description": "Current Elevation",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "el"
      }
    },
    {
      "name": "Z",
      "description": "Current Zenith Angle",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "z"
      }
    },
    {
      "name": "HA",
      "description": "Current Hour Angle",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "ha"
      }
    },
    {
      "name": "AIRMASS",
      "description": "Air Mass (TBD whether plane-parallel, i.e., sec(z), or curvature-corrected)",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "airmass"
      }
    },
    {
      "name": "TELFOCUS",
      "description": "Current focus (with 10 micrometer precision)",
      "type": "float",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "focus"
      }
    },
    {
      "name": "TELFRAT",
      "description": "Telescope F-ratio (TBD: this is a static quantity)",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "fratio"
      }
    },
    {
      "name": "LST",
      "description": "Local Sidereal Time",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "currentPosition",
        "parameterName": "lst"
      }
    },
    {
      "name": "PNTGST",
      "description": "Current state of the pointing system as enum [SLEWING,TRACKING,INPOSITION].",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "pk",
        "eventName": "pointingStatus",
        "parameterName": "pointingstate"
      }
    },


    {
      "name": "AGWSTATE",
      "description": "Operational state of the AGW Guider",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "TCS AGW GUIDER Assembly",
        "eventName": "state",
        "parameterName": "OperationalState"
      }
    },
    {
      "name": "AGWID",
      "description": "ID of Guider or WFS used for guiding",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "TCS AGW GUIDER Assembly",
        "eventName": "centroids",
        "parameterName": "EquipId"
      }
    },
    {
      "name": "AGWXPOS",
      "description": "Guide Star position x as determined by centroiding algorithm",
      "type": "float",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "TCS AGW GUIDER Assembly",
        "eventName": "centroids",
        "parameterName": "xPosition"
      }
    },
    {
      "name": "AGWYPOS",
      "description": "Guide Star position y as determined by centroiding algorithm",
      "type": "float",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "TCS AGW GUIDER Assembly",
        "eventName": "centroids",
        "parameterName": "yPosition"
      }
    },



    {
      "name": "M3ROT",
      "description": "Current M3 position in rotation.",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "M3S",
        "componentName": "M3Assembly",
        "eventName": "M3 Position",
        "parameterName": "rotation"
      }
    },
    {
      "name": "M3TILT",
      "description": "Current M3 position in tilt.",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "M3S",
        "componentName": "M3Assembly",
        "eventName": "M3 Position",
        "parameterName": "tilt"
      }
    },
    {
      "name": "M2TIP",
      "description": "Current M2 position in tip.",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "M2S",
        "componentName": "M2Assembly",
        "eventName": "M2Position",
        "parameterName": "tip"
      }
    },
    {
      "name": "M2TILT",
      "description": "Current M2 position in tilt.",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "M2S",
        "componentName": "M2Assembly",
        "eventName": "M2Position",
        "parameterName": "tilt"
      }
    },
    {
      "name": "M2PISTON",
      "description": "Current M2 position in piston.",
      "type": "float",
      "units": "m",
      "source": {
        "subsystem": "M2S",
        "componentName": "M2Assembly",
        "eventName": "M2Position",
        "parameterName": "piston"
      }
    },
    {
      "name": "M2DECENX",
      "description": "Current M2 position in decenter-x.",
      "type": "float",
      "units": "m",
      "source": {
        "subsystem": "M2S",
        "componentName": "M2Assembly",
        "eventName": "M2Position",
        "parameterName": "decenter-x"
      }
    },
    {
      "name": "M2DECENY",
      "description": "Current M2 position in decenter-y.",
      "type": "float",
      "units": "m",
      "source": {
        "subsystem": "M2S",
        "componentName": "M2Assembly",
        "eventName": "M2Position",
        "parameterName": "decenter-y"
      }
    },
    {
      "name": "ENCBASE",
      "description": "This is the Current Base Position.",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "ENC",
        "componentName": "EncAssembly",
        "eventName": "CurrentPosition",
        "parameterName": "base"
      }
    },
    {
      "name": "ENCCAP",
      "description": "This is the Current Cap Position",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "ENC",
        "componentName": "EncAssembly",
        "eventName": "CurrentPosition",
        "parameterName": "cap"
      }
    },


    {
      "name": "IMGDISWV",
      "description": "An array of wavelengths. Each provided wavelength value must be unique.",
      "type": "string",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "TCS",
            "componentName": "cmIRIS",
            "eventName": "imgAtmDispersion",
            "parameterName": "wavelength"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "TCS",
            "componentName": "cmIRIS",
            "eventName": "imgAtmDispersion",
            "parameterName": "wavelength"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "TCS",
            "componentName": "cmNFIRAOS",
            "eventName": "atmDispersion",
            "parameterName": "wavelength"
          }
        }
      ]
    },
    {
      "name": "IMGDISWT",
      "description": "An array of weights. They must sum to 1.0.",
      "type": "string",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "TCS",
            "componentName": "cmIRIS",
            "eventName": "imgAtmDispersion",
            "parameterName": "weight"
          }
        },
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "TCS",
            "componentName": "cmIRIS",
            "eventName": "imgAtmDispersion",
            "parameterName": "weight"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "TCS",
            "componentName": "cmNFIRAOS",
            "eventName": "atmDispersion",
            "parameterName": "weight"
          }
        }
      ]
    },
    {
      "name": "IMGDISVL",
      "description": "An array of atmospheric dispersion values.",
      "type": "string",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "TCS",
            "componentName": "cmIRIS",
            "eventName": "imgAtmDispersion",
            "parameterName": "dispersion"
          }
        },
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "TCS",
            "componentName": "cmIRIS",
            "eventName": "imgAtmDispersion",
            "parameterName": "dispersion"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "TCS",
            "componentName": "cmNFIRAOS",
            "eventName": "atmDispersion",
            "parameterName": "dispersion"
          }
        }
      ]
    },
    {
      "name": "INROTANG",
      "description": "Current rotator angle in the XY plane of the FCRSIRIS.",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "instrumentRotatorAngle",
        "parameterName": "instrumentAngle"
      }
    },
    {
      "name": "PROTANG",
      "description": "Future IRIS pupil rotation angle in the X,Y plane of the FCRSIRIS-ROT that will be valid at the time indicated by \"timestamp\" attribute.",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "pupilRotation",
        "parameterName": "pupilRotation"
      }
    },
    {
      "name": "PA",
      "description": "Current angle between Y axis of FCRSIRIS and Declination axis (ICRS).",
      "type": "float",
      "units": "degree",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "positionAngle",
        "parameterName": "positionAngle"
      }
    },
    {
      "name": "OIWFS1PS",
      "description": "2-element array holding x,y values in the FCRSIRIS-ROT.",
      "type": "string",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "oiwfsProbeDemands",
        "parameterName": "oiwfs_pos",
        "rowIndex": 0
      }
    },
    {
      "name": "OIWFS2PS",
      "description": "2-element array holding x,y values in the FCRSIRIS-ROT.",
      "type": "string",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "oiwfsProbeDemands",
        "parameterName": "oiwfs_pos",
        "rowIndex": 1
      }
    },
    {
      "name": "OIWFS3PS",
      "description": "2-element array holding x,y values in the FCRSIRIS-ROT.",
      "type": "string",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "oiwfsProbeDemands",
        "parameterName": "oiwfs_pos",
        "rowIndex": 2
      }
    },
    {
      "name": "OIWFS1ST",
      "description": "Current state of the probe event stream as enum: (SLEWING, TRACKING, INPOSITION)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "oiwfsProbeDemands",
        "parameterName": "oiwfs_pointingstate",
        "index": 0
      }
    },
    {
      "name": "OIWFS2ST",
      "description": "Current state of the probe event stream as enum: (SLEWING, TRACKING, INPOSITION)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "oiwfsProbeDemands",
        "parameterName": "oiwfs_pointingstate",
        "index": 1
      }
    },
    {
      "name": "OIWFS3ST",
      "description": "Current state of the probe event stream as enum: (SLEWING, TRACKING, INPOSITION)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "oiwfsProbeDemands",
        "parameterName": "oiwfs_pointingstate",
        "index": 2
      }
    },
    {
      "name": "ODGW1PS",
      "description": "2-element array holding x,y values in the FCRSIRIS-ROT.",
      "type": "string",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "odgwPosDemands",
        "parameterName": "odgw_pos",
        "rowIndex": 0
      }
    },
    {
      "name": "ODGW2PS",
      "description": "2-element array holding x,y values in the FCRSIRIS-ROT.",
      "type": "string",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "odgwPosDemands",
        "parameterName": "odgw_pos",
        "rowIndex": 1
      }
    },
    {
      "name": "ODGW3PS",
      "description": "2-element array holding x,y values in the FCRSIRIS-ROT.",
      "type": "string",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "odgwPosDemands",
        "parameterName": "odgw_pos",
        "rowIndex": 2
      }
    },
    {
      "name": "ODGW4PS",
      "description": "2-element array holding x,y values in the FCRSIRIS-ROT.",
      "type": "string",
      "units": "mm",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "odgwPosDemands",
        "parameterName": "odgw_pos",
        "rowIndex": 3
      }
    },
    {
      "name": "ODGW1ST",
      "description": "Current state of the ODGW event stream as enum: (SLEWING, TRACKING, INPOSITION)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "odgwPosDemands",
        "parameterName": "odgw_pointingstate",
        "index": 0
      }
    },
    {
      "name": "ODGW2ST",
      "description": "Current state of the ODGW event stream as enum: (SLEWING, TRACKING, INPOSITION)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "odgwPosDemands",
        "parameterName": "odgw_pointingstate",
        "index": 1
      }
    },
    {
      "name": "ODGW3ST",
      "description": "Current state of the ODGW event stream as enum: (SLEWING, TRACKING, INPOSITION)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "odgwPosDemands",
        "parameterName": "odgw_pointingstate",
        "index": 2
      }
    },
    {
      "name": "ODGW4ST",
      "description": "Current state of the ODGW event stream as enum: (SLEWING, TRACKING, INPOSITION)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "TCS",
        "componentName": "cmIRIS",
        "eventName": "odgwPosDemands",
        "parameterName": "odgw_pointingstate",
        "index": 3
      }
    },



    {
      "name": "FILTER",
      "description": "Current imager filter name. When two or more filters are inserted in the science light path, filter names are concatinated with TBD character in the order of wheel number.",
      "type": "string",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "imager.filter",
            "eventName": "current",
            "parameterName": "name"
          }
        },
        {
          "name": "WFOS",
          "comment": "",
          "source": {
            "subsystem": "WFOS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },

    {
      "name": "COADDS",
      "description": "Number of coadditions.",
      "type": "integer",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "ifsObserveSettings",
            "parameterName": "numRamps"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "imagerObserveSettings",
            "parameterName": "numRamps"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "WFOS",
          "comment": "",
          "source": {
            "subsystem": "WFOS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "DET_ID",
      "description": "Detector ID IMG1/2/3/4 ,SLC/LEN",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "",
        "eventName": "",
        "parameterName": ""
      }
    },
    {
      "name": "EXPNO",
      "description": "Number of current (if in progress) or last IFS exposure at current dither pattern with current instrument configuration (1-based).",
      "type": "integer",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "exposureRepeats",
            "parameterName": "currentIFSExposureNumber"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "exposureRepeats",
            "parameterName": "currentImagerExposureNumber"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "WFOS",
          "comment": "",
          "source": {
            "subsystem": "WFOS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "EXPSTART",
      "description": "Start time of the first pixel read",
      "type": "integer",
      "units": "Microseconds in MJD",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "WFOS",
          "comment": "",
          "source": {
            "subsystem": "WFOS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "EXPTIME",
      "description": "Actual total exposure time which is rampIntegrationTime multiplied by ramps.",
      "type": "float",
      "units": "second",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "ifs.detector",
            "eventName": "currentConfig",
            "parameterName": "totalTime"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "imager.detector",
            "eventName": "currentConfig",
            "parameterName": "totalTime"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "WFOS",
          "comment": "",
          "source": {
            "subsystem": "WFOS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "FRM_TIME",
      "description": "Time taken to read all the pixels in the readout frame",
      "type": "integer",
      "units": "Microseconds",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "ifs.detector",
            "eventName": "currentConfig",
            "parameterName": "readoutTime"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "imager.detector",
            "eventName": "currentConfig",
            "parameterName": "readoutTime"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "WFOS",
          "comment": "",
          "source": {
            "subsystem": "WFOS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "GAIN",
      "description": "Conversion of photoelectrons to counts for each detector.",
      "type": "integer",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "ifs.detector",
            "eventName": "systemConf",
            "parameterName": "gain"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "imager.detector",
            "eventName": "systemConf",
            "parameterName": "gain"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "WFOS",
          "comment": "",
          "source": {
            "subsystem": "WFOS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "NUMREADS",
      "description": "Number of raw readouts used in the sampling mode per ramp. This is the number of raw readouts that are added together before being used in the sampling mode to create a single frame. This number is only used in sample modes of MDS and UTR.",
      "type": "integer",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "ifsObserveSettings",
            "parameterName": "numReads"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "imagerObserveSettings",
            "parameterName": "numReads"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "RAMPINTT",
      "description": "Integration time, this is the length of time for each ramp.",
      "type": "integer",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "ifsObserveSettings",
            "parameterName": "integrationTime"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "imagerObserveSettings",
            "parameterName": "integrationTime"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "READNOIS",
      "description": "Nominal read noise of the entire array measured at commissioning phase.",
      "type": "integer",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "ifs.detector",
            "eventName": "systemConf",
            "parameterName": "readNoise"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "imager.detector",
            "eventName": "systemConf",
            "parameterName": "readNoise"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "WFOS",
          "comment": "",
          "source": {
            "subsystem": "WFOS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "READTIME",
      "description": "Time to clock one detector, which is dependent on pixel clocking time and subarray dimensions and channels used.",
      "type": "float",
      "units": "second",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "ifs.detector",
            "eventName": "currentConfig",
            "parameterName": "readoutTime"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "imager.detector",
            "eventName": "currentConfig",
            "parameterName": "readoutTime"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "WFOS",
          "comment": "",
          "source": {
            "subsystem": "WFOS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "RST_TIME",
      "description": "Time of the last reset",
      "type": "integer",
      "units": "Microseconds in MJD",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "SAMPMODE",
      "description": "This is the sampling mode. This could be CDS, MDS or UTR.",
      "type": "string",
      "units": "NoUnits",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "ifsObserveSettings",
            "parameterName": "samplingMode"
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "is",
            "eventName": "imagerObserveSettings",
            "parameterName": "samplingMode"
          }
        },
        {
          "name": "MODHIS",
          "comment": "",
          "source": {
            "subsystem": "MODHIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "XSIZE",
      "description": "Window Size X",
      "type": "integer",
      "units": "pixels",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "YSIZE",
      "description": "Window Size Y",
      "type": "integer",
      "units": "Pixels",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "XSTART",
      "description": "Subarray Start X",
      "type": "integer",
      "units": "pixels",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "YSTART",
      "description": "Subarray Start Y",
      "type": "integer",
      "units": "pixels",
      "channel": [
        {
          "name": "IRIS-IFS",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        },
        {
          "name": "IRIS-IMAGER",
          "comment": "",
          "source": {
            "subsystem": "IRIS",
            "componentName": "",
            "eventName": "",
            "parameterName": ""
          }
        }
      ]
    },
    {
      "name": "SARRMODE",
      "description": "Subarray Mode [FULL_FRAME,SUB_ARRAY,ODGW]",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "",
        "eventName": "",
        "parameterName": ""
      }
    },
    {
      "name": "OBS_ID",
      "description": "Observation id",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "ESW",
        "componentName": "TopLevelSequencer",
        "eventName": "ObservationDetails",
        "parameterName": "observationId"
      }
    },

    {
      "name": "CLDSTPX",
      "description": "Current position in X axis.",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.coldstop",
        "eventName": "current",
        "parameterName": "x_pos"
      }
    },
    {
      "name": "CLDSTPY",
      "description": "Current position in Y axis.",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.coldstop",
        "eventName": "current",
        "parameterName": "y_pos"
      }
    },
    {
      "name": "CLDSTPTH",
      "description": "Current angle of the rotary stage.",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.coldstop",
        "eventName": "current",
        "parameterName": "theta"
      }
    },
    {
      "name": "PPMIRRST",
      "description": "Whether the mirror is inserted into the light path or not, values: (IN, INTERMEDIATE, OUT, UNKNOWN).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "pupilview",
        "eventName": "MIRROR_state",
        "parameterName": "selection"
      }
    },
    {
      "name": "FILTWAVE",
      "description": "Current effective filter wavelength. Effective wavelength is defined as ... ?",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.filter",
        "eventName": "current",
        "parameterName": "wavelength"
      }
    },
    {
      "name": "FILTDRFL",
      "description": "Indicates whether a dark filter is inserted or not.",
      "type": "type",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.filter",
        "eventName": "current",
        "parameterName": "dark"
      }
    },
    {
      "name": "FILT1POS",
      "description": "Current position name of the wheel 1 (as enum: (TBD1, TBD2, TBD3, TBD4, TBD5, TBD6, TBD7, TBD8, TBD9, TBD10, TBD11, TBD12, TBD13, TBD14, THROUGH, HOME, INTERMEDIATE, UNKNOWN).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.filter",
        "eventName": "wheel1",
        "parameterName": "position"
      }
    },
    {
      "name": "FILT2POS",
      "description": "Current position name of the wheel 2, values: (TBD1, TBD2, TBD3, TBD4, TBD5, TBD6, TBD7, TBD8, TBD9, TBD10, TBD11, TBD12, TBD13, TBD14, THROUGH, HOME, INTERMEDIATE, UNKNOWN).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.filter",
        "eventName": "wheel2",
        "parameterName": "position"
      }
    },
    {
      "name": "FILT3POS",
      "description": "Current position name of the wheel 3, values: (TBD1, TBD2, TBD3, TBD4, TBD5, TBD6, TBD7, TBD8, TBD9, TBD10, TBD11, TBD12, TBD13, TBD14, THROUGH, HOME, INTERMEDIATE, UNKNOWN).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.filter",
        "eventName": "wheel3",
        "parameterName": "position"
      }
    },
    {
      "name": "FILT4POS",
      "description": "Current position name of the wheel 4, values: (TBD1, TBD2, TBD3, TBD4, TBD5, TBD6, TBD7, TBD8, TBD9, TBD10, TBD11, TBD12, TBD13, TBD14, THROUGH, HOME, INTERMEDIATE, UNKNOWN)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.filter",
        "eventName": "wheel4",
        "parameterName": "position"
      }
    },
    {
      "name": "FILT5POS",
      "description": "Current position name of the wheel 5, values: (TBD1, TBD2, TBD3, TBD4, TBD5, TBD6, TBD7, TBD8, TBD9, TBD10, TBD11, TBD12, TBD13, TBD14, THROUGH, HOME, INTERMEDIATE, UNKNOWN)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "imager.filter",
        "eventName": "wheel5",
        "parameterName": "position"
      }
    },
    {
      "name": "OIWF1SXY",
      "description": "oiwfs1 2-element array holding x,y values.",
      "type": "array[2] of double",
      "units": "mm",
      "source": {
        "subsystem": "IRIS",
        "componentName": "the same as OIWFS1PS?",
        "eventName": "",
        "parameterName": ""
      }
    },
    {
      "name": "OIWF2SXY",
      "description": "oiwfs2 2-element array holding x,y values.",
      "type": "array[2] of double",
      "units": "mm",
      "source": {
        "subsystem": "IRIS",
        "componentName": "the same as OIWFS2PS?",
        "eventName": "",
        "parameterName": ""
      }
    },
    {
      "name": "OIWF3SXY",
      "description": "oiwfs3 2-element array holding x,y values.",
      "type": "array[2] of double",
      "units": "mm",
      "source": {
        "subsystem": "IRIS",
        "componentName": "the same as OIWFS3PS?",
        "eventName": "",
        "parameterName": ""
      }
    },
    {
      "name": "DITHNO",
      "description": "Total number of IFS exposures at current dither pattern.",
      "type": "integer",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "is",
        "eventName": "exposureRepeats",
        "parameterName": "numberOfIFSExposures"
      }
    },
    {
      "name": "IFSSTATE",
      "description": "IFS is currently observing, means when set the start prepare event was received and will stay that way until the observation is complete is received.",
      "type": "type",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "is",
        "eventName": "observing",
        "parameterName": "ifs"
      }
    },

    {
      "name": "IFSSCALE",
      "description": "IFS Scale.",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.scale",
        "eventName": "scale",
        "parameterName": "current"
      }
    },
    {
      "name": "IFSMODE",
      "description": "Current IFS mode. Indicates if in slicer or lenslet mode.",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.scale",
        "eventName": "IFSmode",
        "parameterName": "mode"
      }
    },
    {
      "name": "PCKMRRPS",
      "description": "Current position name of pickoff mirror mechanism, values: (IN, OUT).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.scale",
        "eventName": "pickoffMirrorMech",
        "parameterName": "position"
      }
    },
    {
      "name": "PRSCPPOS",
      "description": "Current position name of periscope mirror mechanism, values: (IN, OUT).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.scale",
        "eventName": "periscopeMirrorMech",
        "parameterName": "position"
      }
    },
    {
      "name": "IFSO1POS",
      "description": "Current position name of first optics mechanism, values: (TBD1, TBD2).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.scale",
        "eventName": "firstopticsmech",
        "parameterName": "position"
      }
    },
    {
      "name": "IFSO2POS",
      "description": "Current position name of second optics mechanism, values: (TBD1, TBD2).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.scale",
        "eventName": "secondopticsmech",
        "parameterName": "position"
      }
    },
    {
      "name": "IFSGRTST",
      "description": "The current grating selection, values: (4000-Z, 4000-Y, 4000-J, 4000-H, 4000-K, 4000-H+K, 8000-Z, 8000-Y, 8000-J, 8000-H, 8000-Kn1-3, 8000-Kn4-5, 8000-Kbb, 10000-Z, 10000-Y, 10000-J, 10000-H, 1000-K, Mirror, INTERMEDIATE, UNKNOWN).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.res",
        "eventName": "GRATING_state",
        "parameterName": "selection"
      }
    },
    {
      "name": "LLMSKST",
      "description": "The current lenslet mask position, values: enum: (FULL_OPEN, SERRATED_WIDE, FINE_MASK, FINE_MASK_CALIBRATION, INTERMEDIATE, UNKNOWN).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.res",
        "eventName": "LENSLETMASK_state",
        "parameterName": "selection"
      }
    },
    {
      "name": "SLMSKST",
      "description": "The current slicer mask position, values: (FULL_OPEN, INTERMEDIATE, HALF, UNKNOWN).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.res",
        "eventName": "SLICERMASK_state",
        "parameterName": "selection"
      }
    },
    {
      "name": "IFSRES",
      "description": "Current spectral resolution, values: (4000-Z, 4000-Y, 4000-J, 4000-H, 4000-K, 4000-H+K, 8000-Z, 8000-Y, 8000-J, 8000-H, 8000-Kn1-3, 8000-Kn4-5, 8000-Kbb, 10000-Z, 10000-Y, 10000-J, 10000-H, 1000-K, Mirror).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.res",
        "eventName": "resolution",
        "parameterName": "current"
      }
    },
    {
      "name": "IFSGRTPS",
      "description": "Current position name of spectral resolution grating mechanism.",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.res",
        "eventName": "gratingmech",
        "parameterName": "position"
      }
    },
    {
      "name": "LLMSKPOS",
      "description": "Current position name of spectral resolution lenslet mask mechanism.",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "ifs.res",
        "eventName": "lensletmaskmech",
        "parameterName": "position"
      }
    },

    {
      "name": "IMGTMP",
      "description": "ID of the sensor assigned for the temperature reading.",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "sc.cryoenv",
        "eventName": "IMGTEMP[1]",
        "parameterName": "sensorID"
      }
    },
    {
      "name": "IFSTMP",
      "description": "ID of the sensor assigned for the temperature reading.",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "sc.cryoenv",
        "eventName": "IFSTEMP[1]",
        "parameterName": "sensorID"
      }
    },
    {
      "name": "TMPTMP",
      "description": "ID of the sensor assigned for the temperature reading.",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "IRIS",
        "componentName": "el.env",
        "eventName": "TEMP_TEMP[N]",
        "parameterName": "sensorID"
      }
    },


    {
      "name": "SSLGSALT",
      "description": "Current altitude (85 ≤ x ≤ 100) estimated based on measured range distance and the value set for zenith angle (= current.rangeDistance*cos(simTcs.zenithAngle)).",
      "type": "double",
      "units": "km",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "ssLgs",
        "eventName": "current",
        "parameterName": "altitude"
      }
    },
    {
      "name": "SSLGSMAG",
      "description": "Magnitude estimate of the variable intensity NGS sources in R band (TBC), based on manual and motorized attenuator (current.attenuation).",
      "type": "array[7] of double",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "ssNgs",
        "eventName": "state",
        "parameterName": "magnitude"
      }
    },
    {
      "name": "LGSR0",
      "description": "Fried parameter (r0).",
      "type": "float",
      "units": "m",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbLgs",
        "parameterName": "r0"
      }
    },
    {
      "name": "LGSTHT0",
      "description": "Isoplanatic angle (θ0).",
      "type": "float",
      "units": "mas",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbLgs",
        "parameterName": "theta0"
      }
    },
    {
      "name": "LGSTHT2",
      "description": "Generalized isoplanatic angle (θ2).",
      "type": "float",
      "units": "mas",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbLgs",
        "parameterName": "theta2"
      }
    },
    {
      "name": "LGSL0",
      "description": "Turbulence outer scale (L0).",
      "type": "float",
      "units": "m",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbLgs",
        "parameterName": "L0"
      }
    },
    {
      "name": "LGSTAU0",
      "description": "Coherence time (τ0).",
      "type": "float",
      "units": "second",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbLgs",
        "parameterName": "tau0"
      }
    },
    {
      "name": "LGSCN2P",
      "description": "Cn2 turbulence profile (p).",
      "type": "array[12] of float",
      "units": "m-5/3",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbLgs",
        "parameterName": "profile"
      }
    },
    {
      "name": "NGSPROF",
      "description": "Ground layer turbulence (p).",
      "type": "float",
      "units": "m-5/3",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbNgs",
        "parameterName": "groundLayer"
      }
    },
    {
      "name": "NGSR0",
      "description": "Fried parameter (r0).",
      "type": "float",
      "units": "m",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbNgs",
        "parameterName": "r0"
      }
    },
    {
      "name": "NGSL0",
      "description": "Turbulence outer scale (L0).",
      "type": "float",
      "units": "m",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbNgs",
        "parameterName": "l0"
      }
    },
    {
      "name": "NGSTAU0",
      "description": "Coherence time (τ0).",
      "type": "float",
      "units": "second",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "turbNgs",
        "parameterName": "tau0"
      }
    },
    {
      "name": "AORATEHO",
      "description": "High-order loop rate. In LGS mode this is equal to the LGS WFS frame rate. In NGS or SL mode this is equal to the PWFS frame rate.",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "mode",
        "parameterName": "rateHo"
      }
    },
    {
      "name": "AORATELO",
      "description": "Low-order loop rate. This is equal to the Tier 1 and 2 steady-state frame rate.",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "mode",
        "parameterName": "rateLo"
      }
    },
    {
      "name": "AORATELT",
      "description": "Low-order truth loop rate. This is equal to the Tier 3 and 3F steady-state frame rate.",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "mode",
        "parameterName": "rateLot"
      }
    },
    {
      "name": "AORATEWC",
      "description": "Wavefront correction. In LGS mode this should be at least equal to the LGS WFS frame rate. In NGS mode this should be at least equal to the PWFS frame rate. In SL mode his should be at least to the Tier 1 and 2 steady-state frame rate.",
      "type": "float",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "mode",
        "parameterName": "rateWc"
      }
    },
    {
      "name": "AOTIER1",
      "description": "Tier 1 detector assignment, values: (PWFS, OIWFSA, OIWFSB, OIWFSC).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "mode",
        "parameterName": "tier1"
      }
    },
    {
      "name": "AOTIER2",
      "description": "Tier 2 detector assignment. The array is ordered Tier 2 [A B]. Type is array[2] of enum: (NONE, PWFS, OIWFSA, OIWFSB, OIWFSC, ODGW1, ODGW2, ODGW3, ODGW4).",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "mode",
        "parameterName": "tier2"
      }
    },
    {
      "name": "AOTIER3",
      "description": "Tier 3 detector assignment. The array is ordered Tier 3 [A B C D]. Type is array[4] of enum: (NONE, OIWFSA, OIWFSB, OIWFSC, ODGW1, ODGW2, ODGW3, ODGW4)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "mode",
        "parameterName": "tier3"
      }
    },
    {
      "name": "AOTIER3F",
      "description": "Tier 3F detector assignment. Values: (NONE, OIWFSA, OIWFSB, OIWFSC)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "mode",
        "parameterName": "tier3f"
      }
    },
    {
      "name": "ODGWIMEL",
      "description": "Ellipticity value based on the averaged spot ellipticity profile, i.e., ratio between σ1 and σ2 of the ellipse.",
      "type": "array[4] of float",
      "units": "pixel",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "odgwImage",
        "parameterName": "ellip"
      }
    },
    {
      "name": "ODGWIMS1",
      "description": "Image size 1 (σ1) based on the averaged spot ellipticity profile.",
      "type": "array[4] of float",
      "units": "pixel",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "odgwImage",
        "parameterName": "size1"
      }
    },
    {
      "name": "ODGWIMS2",
      "description": "Image size 2 (σ2) based on the averaged spot ellipticity profile.",
      "type": "array[4] of float",
      "units": "pixel",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "odgwImage",
        "parameterName": "size2"
      }
    },
    {
      "name": "ODGWIMRT",
      "description": "Image rotation angle between the unrotated elliptical coordinate system and the local detector coordinate system.",
      "type": "array[4] of float",
      "units": "pixel",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "rtc",
        "eventName": "odgwImage",
        "parameterName": "rot"
      }
    },
    {
      "name": "AOISMST",
      "description": "Current ISM selection. Values: enum: (BOTTOM, SIDE, TOP, INTERMEDIATE, UNKNOWN)",
      "type": "string",
      "units": "NoUnits",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "ism",
        "eventName": "state",
        "parameterName": "select"
      }
    },
    {
      "name": "AODM0TM",
      "description": "Current temperature of DM0",
      "type": "float",
      "units": "C",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "dm",
        "eventName": "temperature",
        "parameterName": "dm0"
      }
    },
    {
      "name": "AODM11TM",
      "description": "Current temperature of DM11",
      "type": "float",
      "units": "C",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "dm",
        "eventName": "temperature",
        "parameterName": "dm11"
      }
    },
    {
      "name": "AONAALT",
      "description": "Current best estimate of the sodium layer altitude.",
      "type": "double (1 ≤ x ≤ 65)",
      "units": "km",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "lgsTrombone",
        "eventName": "sodiumLayer",
        "parameterName": "altitude"
      }
    },
    {
      "name": "AOENCLTM",
      "description": "Air temperature inside the optical enclosure as reported by the refrigeration controller and the 1-Wire Sensor.",
      "type": "array[2] of double (-40 ≤ x ≤ 4 0)",
      "units": "C",
      "source": {
        "subsystem": "NFIRAOS",
        "componentName": "encl",
        "eventName": "temperature",
        "parameterName": "inside"
      }
    }
  ]
}