SIAP Keywords |
ID | UTYPE | DataType | Unit | Description |
Query Metadata |
Query | Query | GROUP | | Query Metadata |
Score | Query.Score | float | | Degree of match to query parameters |
Token | Query.Token | char | | Continuation token for large queries |
|
Association Metadata |
Association | Association | GROUP | | Association Metadata |
AssocType | Association.Type | char | | Type of association |
AssocID | Association.ID | char | | Association identifier |
AssocKey | Association.Key | char | | Key used to distinguish association elements |
|
Access Metadata |
Access | Access | GROUP | | Access Metadata |
AcRef | Access.Reference | char | | URL used to access dataset |
Format | Access.Format | char | | Content or MIME type of dataset |
DatasetSize | Access.Size | long | bytes | Estimated dataset size |
AccessRefTTL | Access.TimeToLive | int | seconds | Minimum time to live of staged dataset |
|
General Dataset Metadata |
Dataset | Dataset | GROUP | | General Dataset Metadata |
DataModel | Dataset.DataModel | char | | Datamodel name and version |
DatasetType | Dataset.Type | char | | Dataset or segment type |
DateObs | Dataset.DataObs | double | y | MJD at midpoint of observation |
RA | Dataset.RightAscension | double | deg | Right ascension at image center (ICRS) |
DEC | Dataset.Declination | double | deg | Declination at image center (ICRS) |
Naxes | Dataset.Naxes | int | | Number of image axes |
Naxis | Dataset.Naxis | int | pixels | Length of each image axis |
Scale | Dataset.Scale | float | deg | Image scale |
TimeSI | Dataset.TimeSI | char | | SI factor and dimensions |
SpectralSI | Dataset.SpectralSI | char | | SI factor and dimensions |
FluxSI | Dataset.FluxSI | char | | SI factor and dimensions |
|
Image WCS |
WCS | WCS | GROUP | | Image WCS |
CoordRefFrame | WCS.CoordRefFrame | char | | Coordinate system reference frame |
CoordEquinox | WCS.CoordEquinox | double | y | Coordinate system equinox |
CoordProjection | WCS.CoordProjection | char | | Celestial projection as for FITS WCS |
CoordRefPixel | WCS.CoordRefPixel | double | pixels | Pixel coordinates of reference point in image |
CoordRefValue | WCS.CoordRefValue | double | | World coordinates of reference point in image |
CoordCDMatrix | WCS.CoordCDMatrix | double | | WCS CD matrix as for FITS WCS |
|
Dataset Identification Metadata |
DataID | DataID | GROUP | | Dataset Identification Metadata |
Title | DataID.Title | char | | Dataset Title |
Creator | DataID.Creator | char | | Dataset creator |
Collection | DataID.Collection | char | | Data collection to which dataset belongs |
DatasetID | DataID.DatasetID | char | | IVOA Dataset ID |
CreatorDID | DataID.CreatorDID | char | | Creator's ID for the dataset |
CreatorDate | DataID.Date | char | | Data processing/creation date |
CreatorVersion | DataID.Version | char | | Version of dataset |
Instrument | DataID.Instrument | char | | Instrument name |
Bandpass | DataID.Bandpass | char | | Band as in RSM Coverage.Spectral |
DataSource | DataID.DataSource | char | | Original source of the data |
CreationType | DataID.CreationType | char | | Dataset creation type |
|
Curation Metadata |
Curation | Curation | GROUP | | Curation Metadata |
Publisher | Curation.Publisher | char | | Dataset publisher |
PublisherDID | Curation.PublisherDID | char | | Publisher's ID for the dataset ID |
PublisherDate | Curation.Date | char | | Date curated dataset last modified |
PublisherVersion | Curation.Version | char | | Publisher's version of the dataset |
Rights | Curation.Rights | char | | Restrictions on data access |
Reference | Curation.Reference | char | | URL or Bibcode for documentation |
|
Target Metadata |
Target | Target | GROUP | | Target Metadata |
TargetName | Target.Name | char | | Target name |
TargetClass | Target.Class | char | | Object class of observed target |
Redshift | Target.Redshift | double | | Target redshift |
VarAmpl | Target.VarAmpl | float | | Target variability amplitude (typical) |
|
Derived Metadata |
Derived | Derived | GROUP | | Derived Metadata |
DerivedSNR | Derived.SNR | float | | Signal-to-noise for spectrum |
|
Coordinate System Metadata |
CoordSys | CoordSys | GROUP | | Coordinate System Metadata |
SpaceFrameName | CoordSys.SpaceFrame.Name | char | | Spatial coordinate frame name |
SpaceFrameEquinox | CoordSys.SpaceFrame.Equinox | double | y | Equinox |
TimeFrameName | CoordSys.TimeFrame.Name | char | | Timescale |
|
Spatial Axis Characterization |
Char.SpatialAxis | Char.SpatialAxis | GROUP | | Spatial Axis Characterization |
SpatialLocation | Char.SpatialAxis.Coverage.Location.Value | double | deg | Spatial Position |
SpatialExtent | Char.SpatialAxis.Coverage.Bounds.Extent | double | deg | Aperture angular size |
SpatialArea | Char.SpatialAxis.Coverage.Support.Area | char | deg | Aperture region |
SpatialSupportExtent | Char.SpatialAxis.Coverage.Support.Extent | double | sqdeg | Field of view area |
SpatialSampleExtent | Char.SpatialAxis.SamplingPrecision.SampleExtent | float | | Spatial bin size |
SpatialFillFactor | Char.SpatialAxis.SamplingPrecision.SamplingPrecisionRefVal.FillFactor | float | deg | Spatial sampling filling factor |
SpatialStatError | Char.SpatialAxis.Accuracy.StatError | double | deg | Astrometric statistical error |
SpatialSysError | Char.SpatialAxis.Accuracy.SysError | double | deg | Astrometric systematic error |
SpatialCalibration | Char.SpatialAxis.Calibration | char | | Type of spatial coord calibration |
SpatialResolution | Char.SpatialAxis.Resolution | double | deg | Spatial resolution of data |
|
Spectral Axis Characterization |
Char.SpectralAxis | Char.SpectralAxis | GROUP | | Spectral Axis Characterization |
SpectralAxisUcd | Char.SpectralAxis.Ucd | char | | UCD for spectral coord |
SpectralLocation | Char.SpectralAxis.Coverage.Location.Value | double | m | Spectral coord value |
SpectralExtent | Char.SpectralAxis.Coverage.Bounds.Extent | double | m | Width of spectrum |
SpectralStart | Char.SpectralAxis.Coverage.Bounds.Start | double | m | Start in spectral coordinate |
SpectralStop | Char.SpectralAxis.Coverage.Bounds.Stop | double | m | Stop in spectral coordinate |
SpectralSupportExtent | Char.SpectralAxis.Coverage.Support.Extent | double | m | Effective width of spectrum |
SpectralSampleExtent | Char.SpectralAxis.SamplingPrecision.SampleExtent | double | m | Wavelength bin size |
SpectralFillFactor | Char.SpectralAxis.SamplingPrecision.SamplingPrecisionRefVal.FillFactor | float | | Spectral sampling filling factor |
SpectralBinSize | Char.SpectralAxis.Accuracy.BinSize | double | m | Spectral coord bin size |
SpectralStatError | Char.SpectralAxis.Accuracy.StatError | double | m | Spectral coord statistical error |
SpectralSysError | Char.SpectralAxis.Accuracy.SysError | double | m | Spectral coord systematic error |
SpectralCalibration | Char.SpectralAxis.Calibration | char | m | Type of spectral coord calibration |
SpectralResolution | Char.SpectralAxis.Resolution | double | m | Spectral resolution FWHM |
SpectralResPower | Char.SpectralAxis.ResPower | float | | Spectral resolving power |
|
Time Axis Characterization |
Char.TimeAxis | Char.TimeAxis | GROUP | | Time Axis Characterization |
TimeLocation | Char.TimeAxis.Coverage.Location.Value | double | d | Midpoint of exposure on MJD scale |
TimeExtent | Char.TimeAxis.Coverage.Bounds.Extent | double | s | Total exposure time |
TimeStart | Char.TimeAxis.Coverage.Bounds.Start | double | d | Start time |
TimeStop | Char.TimeAxis.Coverage.Bounds.Stop | double | d | Stop time |
TimeSupportExtent | Char.TimeAxis.Coverage.Support.Extent | double | s | Effective exposure time |
TimeSampleExtent | Char.TimeAxis.SamplingPrecision.SampleExtent | double | s | Time bin size |
TimeFillFactor | Char.TimeAxis.SamplingPrecision.SamplingPrecisionRefVal.FillFactor | float | | Time sampling filling factor |
TimeStatError | Char.TimeAxis.Accuracy.StatError | double | s | Time coord statistical error |
TimeSysError | Char.TimeAxis.Accuracy.SysError | double | s | Time coord systematic error |
TimeCalibration | Char.TimeAxis.Calibration | char | | Type of coord calibration |
TimeResolution | Char.TimeAxis.Resolution | double | s | |
|
Flux Axis Characterization |
Char.FluxAxis | Char.FluxAxis | GROUP | | Flux Axis Characterization |
FluxAxisUcd | Char.FluxAxis.Ucd | char | | UCD for flux |
FluxStatError | Char.FluxAxis.Accuracy.StatError | double | | Flux statistical error |
FluxSysError | Char.FluxAxis.Accuracy.SysError | double | | Flux systematic error |
FluxCalibration | Char.FluxAxis.Calibration | char | | Type of flux calibration |