SIAP Keywords
IDUTYPEDataTypeUnitDescription
Query Metadata
QueryQueryGROUPQuery Metadata
ScoreQuery.ScorefloatDegree of match to query parameters
TokenQuery.TokencharContinuation token for large queries
Association Metadata
AssociationAssociationGROUPAssociation Metadata
AssocTypeAssociation.TypecharType of association
AssocIDAssociation.IDcharAssociation identifier
AssocKeyAssociation.KeycharKey used to distinguish association elements
Access Metadata
AccessAccessGROUPAccess Metadata
AcRefAccess.ReferencecharURL used to access dataset
FormatAccess.FormatcharContent or MIME type of dataset
DatasetSizeAccess.SizelongbytesEstimated dataset size
AccessRefTTLAccess.TimeToLiveintsecondsMinimum time to live of staged dataset
General Dataset Metadata
DatasetDatasetGROUPGeneral Dataset Metadata
DataModelDataset.DataModelcharDatamodel name and version
DatasetTypeDataset.TypecharDataset or segment type
DateObsDataset.DataObsdoubleyMJD at midpoint of observation
RADataset.RightAscensiondoubledegRight ascension at image center (ICRS)
DECDataset.DeclinationdoubledegDeclination at image center (ICRS)
NaxesDataset.NaxesintNumber of image axes
NaxisDataset.NaxisintpixelsLength of each image axis
ScaleDataset.ScalefloatdegImage scale
TimeSIDataset.TimeSIcharSI factor and dimensions
SpectralSIDataset.SpectralSIcharSI factor and dimensions
FluxSIDataset.FluxSIcharSI factor and dimensions
Image WCS
WCSWCSGROUPImage WCS
CoordRefFrameWCS.CoordRefFramecharCoordinate system reference frame
CoordEquinoxWCS.CoordEquinoxdoubleyCoordinate system equinox
CoordProjectionWCS.CoordProjectioncharCelestial projection as for FITS WCS
CoordRefPixelWCS.CoordRefPixeldoublepixelsPixel coordinates of reference point in image
CoordRefValueWCS.CoordRefValuedoubleWorld coordinates of reference point in image
CoordCDMatrixWCS.CoordCDMatrixdoubleWCS CD matrix as for FITS WCS
Dataset Identification Metadata
DataIDDataIDGROUPDataset Identification Metadata
TitleDataID.TitlecharDataset Title
CreatorDataID.CreatorcharDataset creator
CollectionDataID.CollectioncharData collection to which dataset belongs
DatasetIDDataID.DatasetIDcharIVOA Dataset ID
CreatorDIDDataID.CreatorDIDcharCreator's ID for the dataset
CreatorDateDataID.DatecharData processing/creation date
CreatorVersionDataID.VersioncharVersion of dataset
InstrumentDataID.InstrumentcharInstrument name
BandpassDataID.BandpasscharBand as in RSM Coverage.Spectral
DataSourceDataID.DataSourcecharOriginal source of the data
CreationTypeDataID.CreationTypecharDataset creation type
Curation Metadata
CurationCurationGROUPCuration Metadata
PublisherCuration.PublishercharDataset publisher
PublisherDIDCuration.PublisherDIDcharPublisher's ID for the dataset ID
PublisherDateCuration.DatecharDate curated dataset last modified
PublisherVersionCuration.VersioncharPublisher's version of the dataset
RightsCuration.RightscharRestrictions on data access
ReferenceCuration.ReferencecharURL or Bibcode for documentation
Target Metadata
TargetTargetGROUPTarget Metadata
TargetNameTarget.NamecharTarget name
TargetClassTarget.ClasscharObject class of observed target
RedshiftTarget.RedshiftdoubleTarget redshift
VarAmplTarget.VarAmplfloatTarget variability amplitude (typical)
Derived Metadata
DerivedDerivedGROUPDerived Metadata
DerivedSNRDerived.SNRfloatSignal-to-noise for spectrum
Coordinate System Metadata
CoordSysCoordSysGROUPCoordinate System Metadata
SpaceFrameNameCoordSys.SpaceFrame.NamecharSpatial coordinate frame name
SpaceFrameEquinoxCoordSys.SpaceFrame.EquinoxdoubleyEquinox
TimeFrameNameCoordSys.TimeFrame.NamecharTimescale
Spatial Axis Characterization
Char.SpatialAxisChar.SpatialAxisGROUPSpatial Axis Characterization
SpatialLocationChar.SpatialAxis.Coverage.Location.ValuedoubledegSpatial Position
SpatialExtentChar.SpatialAxis.Coverage.Bounds.ExtentdoubledegAperture angular size
SpatialAreaChar.SpatialAxis.Coverage.Support.AreachardegAperture region
SpatialSupportExtentChar.SpatialAxis.Coverage.Support.ExtentdoublesqdegField of view area
SpatialSampleExtentChar.SpatialAxis.SamplingPrecision.SampleExtentfloatSpatial bin size
SpatialFillFactorChar.SpatialAxis.SamplingPrecision.SamplingPrecisionRefVal.FillFactorfloatdegSpatial sampling filling factor
SpatialStatErrorChar.SpatialAxis.Accuracy.StatErrordoubledegAstrometric statistical error
SpatialSysErrorChar.SpatialAxis.Accuracy.SysErrordoubledegAstrometric systematic error
SpatialCalibrationChar.SpatialAxis.CalibrationcharType of spatial coord calibration
SpatialResolutionChar.SpatialAxis.ResolutiondoubledegSpatial resolution of data
Spectral Axis Characterization
Char.SpectralAxisChar.SpectralAxisGROUPSpectral Axis Characterization
SpectralAxisUcdChar.SpectralAxis.UcdcharUCD for spectral coord
SpectralLocationChar.SpectralAxis.Coverage.Location.ValuedoublemSpectral coord value
SpectralExtentChar.SpectralAxis.Coverage.Bounds.ExtentdoublemWidth of spectrum
SpectralStartChar.SpectralAxis.Coverage.Bounds.StartdoublemStart in spectral coordinate
SpectralStopChar.SpectralAxis.Coverage.Bounds.StopdoublemStop in spectral coordinate
SpectralSupportExtentChar.SpectralAxis.Coverage.Support.ExtentdoublemEffective width of spectrum
SpectralSampleExtentChar.SpectralAxis.SamplingPrecision.SampleExtentdoublemWavelength bin size
SpectralFillFactorChar.SpectralAxis.SamplingPrecision.SamplingPrecisionRefVal.FillFactorfloatSpectral sampling filling factor
SpectralBinSizeChar.SpectralAxis.Accuracy.BinSizedoublemSpectral coord bin size
SpectralStatErrorChar.SpectralAxis.Accuracy.StatErrordoublemSpectral coord statistical error
SpectralSysErrorChar.SpectralAxis.Accuracy.SysErrordoublemSpectral coord systematic error
SpectralCalibrationChar.SpectralAxis.CalibrationcharmType of spectral coord calibration
SpectralResolutionChar.SpectralAxis.ResolutiondoublemSpectral resolution FWHM
SpectralResPowerChar.SpectralAxis.ResPowerfloatSpectral resolving power
Time Axis Characterization
Char.TimeAxisChar.TimeAxisGROUPTime Axis Characterization
TimeLocationChar.TimeAxis.Coverage.Location.ValuedoubledMidpoint of exposure on MJD scale
TimeExtentChar.TimeAxis.Coverage.Bounds.ExtentdoublesTotal exposure time
TimeStartChar.TimeAxis.Coverage.Bounds.StartdoubledStart time
TimeStopChar.TimeAxis.Coverage.Bounds.StopdoubledStop time
TimeSupportExtentChar.TimeAxis.Coverage.Support.ExtentdoublesEffective exposure time
TimeSampleExtentChar.TimeAxis.SamplingPrecision.SampleExtentdoublesTime bin size
TimeFillFactorChar.TimeAxis.SamplingPrecision.SamplingPrecisionRefVal.FillFactorfloatTime sampling filling factor
TimeStatErrorChar.TimeAxis.Accuracy.StatErrordoublesTime coord statistical error
TimeSysErrorChar.TimeAxis.Accuracy.SysErrordoublesTime coord systematic error
TimeCalibrationChar.TimeAxis.CalibrationcharType of coord calibration
TimeResolutionChar.TimeAxis.Resolutiondoubles
Flux Axis Characterization
Char.FluxAxisChar.FluxAxisGROUPFlux Axis Characterization
FluxAxisUcdChar.FluxAxis.UcdcharUCD for flux
FluxStatErrorChar.FluxAxis.Accuracy.StatErrordoubleFlux statistical error
FluxSysErrorChar.FluxAxis.Accuracy.SysErrordoubleFlux systematic error
FluxCalibrationChar.FluxAxis.CalibrationcharType of flux calibration