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Glossary of WSA NonSurvey attributes (UKIDSSDR2)
This Glossary alphabetically lists all attributes used in the WSA NonSurvey database(s) held in the WSA. If you would like to have more information about the schema tables please use the Schema Browser (other Browser versions).

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Name	Schema Table	Database	Description	Type	Length	Unit	Default Value	Unified Content Descriptor
camNum	[nspid]MultiframeDetector	WSA NonSurvey	Number of WFCAM camera (1, 2, 3 or 4) {image extension keyword: CAMNUM}	int	4			ID_PLATE
camPower	[nspid]MultiframeDetector	WSA NonSurvey	Camera power (On|Off) {image extension keyword: CAMPOWER}	varchar	3		---	??
camReadOut	[nspid]MultiframeDetector	WSA NonSurvey	Camera readout (CDS|NDR|SAR|RRR) {image extension keyword: READOUT}	varchar	3		---	??
camRole	[nspid]MultiframeDetector	WSA NonSurvey	Camera role (master|slave|unsync) {image extension keyword: CAMROLE}	varchar	8		NONE	??
catalogueSchema	[nspid]Programme	WSA NonSurvey	Script file that describes the catalogue schema	varchar	64			??
catCreationDate	[nspid]MultiframeDetector	WSA NonSurvey	Creation date/time of catalogue file {catalogue extension keyword:  DATE}	datetime	8	MM-DD-YYYY:hh:mm:ss.sss	12-31-9999	??
catName	[nspid]Multiframe	WSA NonSurvey	the filename of the associated catalogue MEF, eg. server:/path/filename.fits	varchar	256			ID_CATALOG
ccdHeaterLevel	[nspid]Multiframe	WSA NonSurvey	AG CCD heater level (in percent) {image primary HDU keyword: CCD_HTP}	real	4		-0.9999995e9
ccdTemp	[nspid]Multiframe	WSA NonSurvey	AG CCD temperature {image primary HDU keyword: CCD_TEMP}	real	4	degrees_Kelvin	-0.9999995e9
ccdTempSetPt	[nspid]Multiframe	WSA NonSurvey	AG CCD temperature setpoint {image primary HDU keyword: CCDTEMPS}	real	4		-0.9999995e9
cd11	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Element of the linear transformation matrix (with scale) {image extension keyword: CD1_1}	float	8			POS_TRANSF_PARAM
cd12	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Element of the linear transformation matrix (with scale) {image extension keyword: CD1_2}	float	8			POS_TRANSF_PARAM
cd21	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Element of the linear transformation matrix (with scale) {image extension keyword: CD2_1}	float	8			POS_TRANSF_PARAM
cd22	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Element of the linear transformation matrix (with scale) {image extension keyword: CD2_2}	float	8			POS_TRANSF_PARAM
centralDec	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Dec (J2000) at device centre	float	8	Degrees	-0.9999995e9	POS_EQ_DEC_MAIN
centralRa	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	RA (J2000) at device centre	float	8	Degrees	-0.9999995e9	POS_EQ_RA_MAIN
chi2	[nspid]Source	WSA NonSurvey	Chi-squared value of proper motion solution	real	4		-0.9999995e9	FIT_CHI2
CIR_BVAR	[nspid]MultiframeDetector	WSA NonSurvey	Latest estimate of background variance {image extension keyword: CIR_BVAR}	real	4		-0.9999995e9	INST_BACKGROUND
CIR_SCAL	[nspid]MultiframeDetector	WSA NonSurvey	Background scale relative to group maximum {image extension keyword: CIR_SCAL}	real	4		-0.9999995e9	INST_BACKGROUND
CIR_ZERO	[nspid]MultiframeDetector	WSA NonSurvey	Pedestal value relative to group average {image extension keyword: CIR_ZERO}	real	4		-0.9999995e9	FIT_PARAM_VALUE
CIRMED	[nspid]MultiframeDetector	WSA NonSurvey	Latest estimate of background {image extension keyword: CIRMED}	real	4		-0.9999995e9	INST_BACKGROUND
class	[nspid]Detection	WSA NonSurvey	Flag indicating most probable morphological classification {catalogue TType keyword: Classification} -1 stellar, +1 non--stellar, 0 noise, -2 borderline stellar, -3 boderline galaxy, -9 saturated	smallint	2			CLASS_MISC
			A discrete classification code for each detected image, based on various cuts on morphological parameters (see the Glossary entries for classStat and ell for further details). It is primarily based on cuts on the stellar profile statistic classStat and necessarily trades-off completeness against reliability between point-like (e.g. stellar) and extended (e.g. galaxy) images. The class assignments are as follows: Flag Meaning Generally satisfies -2 Probable star +2.0≤classStat≤+3.0 -1 Star -3.0≤classStat≤+2.0 0 Noise classStat≤-3.0 +1 Galaxy classStat≥+3.0 but these are also moderated by ellipticity overrides (e.g. ellipticity≥0.9 is flagged as class 0) and magnitude-dependent information (e.g. near or at saturation objects are preferentailly flagged as class -1). Hence class is conservative in the sense that it defines galaxy samples optimised for completeness, and conversely point-source samples optimised for reliability. For examples of the use of the various classification attributes in sample selection, especially with respect to the trade-off between completeness and reliability for point/extended samples, see the Views predefined in the WSA schema (these can be examined using the schema browser). For much more information concerning the class attribute, see the CASU standard source extraction documentation.
classStat	[nspid]Detection	WSA NonSurvey	N(0,1) stellarness-of-profile statistic {catalogue TType keyword: Statistic}	real	4			STAT_PROP
			An equivalent N(0,1) measure of how point-like an image is, used in deriving the class attribute in a 'necessary but not sufficient' sense. Derived mainly from the curve-of-growth of flux using the well-defined stellar locus as a function of magnitude as a benchmark (see Irwin et al. 1994 SPIE 5493 411 for more details). Note that the assignment of the discrete classification flag class=-1 is based on a cut of -3.0≤classStat≤+2.0 cut on this statistic (along with ellipticity and magnitude information) and hence is conservative in the sense that it defines galaxy samples optimised for completeness, and conversely stellar samples optimised for reliability. For examples of the use of the various classification attributes in sample selection, especially with respect to the trade-off between completeness and reliability for point or extended samples, see the Views predefined in the WSA schema (these can be examined using the schema browser).
classStd	[nspid]CurrentStdStarInfo, [nspid]PreviousStdStarInfo	WSA NonSurvey	type of standard: primary, secondary, variable	tinyint	1		1	????
clip	[nspid]RequiredStack	WSA NonSurvey	CASU stacking tool option to perform 3-sigma (robustly estimated) clipping before stacking pixels (y/n; recommended value=y)	varchar	1			??
coeffA	[nspid]CurrentNightlyExt, [nspid]PreviousNightlyExt	WSA NonSurvey	the first-order extinction coefficient	float	8		0.0	PHOT_ATM_EXT
coeffB	[nspid]CurrentNightlyExt, [nspid]PreviousNightlyExt	WSA NonSurvey	the second-order extinction coefficient	float	8		0.0	PHOT_ATM_EXT
coeffC	[nspid]CurrentNightlyExt, [nspid]PreviousNightlyExt	WSA NonSurvey	colour dependent extinction coefficient	float	8		0.0	PHOT_ATM_EXT
combiframeID	[nspid]Provenance	WSA NonSurvey	the UID of the combined frame (=combiframe)	bigint	8			ID_FRAME
comment	[nspid]ArchiveCurationHistory	WSA NonSurvey	Comment string supplied by the curator	varchar	256			??
compFile	[nspid]MultiframeDetector	WSA NonSurvey	Filename of the compressed image of this image frame, eg. server:/path/filename.jpg	varchar	256			ID_FILE
confID	[nspid]Multiframe	WSA NonSurvey	UID of library calibration confidence frame {image extension keyword: CIR_CPM}	bigint	8		-99999999	ID_FRAME
configIndex	[nspid]MultiframeDetector	WSA NonSurvey	Configuration index {image extension keyword: CNFINDEX}	int	4		-99999999	SPECT_INDEX_MISC
confLimit	[nspid]RequiredMosaic	WSA NonSurvey	CASU mosaic tool option to override the default 10% minimum confidence level for a contributing pixel	tinyint	1	percent		??
convFilter	[nspid]RequiredMosaic, [nspid]RequiredStack	WSA NonSurvey	SEX source extraction tool option - name of convolution filter to be used	varchar	20			??
coord1	[nspid]ExternalSurveyTable	WSA NonSurvey	The attribute name of the first (longitudinal) spherical co-ordinate, e.g. equatorial RA	varchar	32			??
coord2	[nspid]ExternalSurveyTable	WSA NonSurvey	The attribute name of the second (latitudinal) spherical co-ordinate, e.g. equatorial Dec	varchar	32			??
coreRadius	[nspid]MultiframeDetector	WSA NonSurvey	Core radius for default profile fit {catalogue extension keyword:  RCORE}	real	4	pixels	-0.9999995e9	??
			Tunable parameter, aperture flux designed to match median seeing of survey data. It is straighforward to show that if rcore = FWHM then for typical profiles encountered the rcore flux estimate has between 80-90% of the accuracy of an idealised perfectly known PSF model method.
corPlateTemp	[nspid]Multiframe	WSA NonSurvey	Cor plate temperature {image primary HDU keyword: CP_TEMP}	real	4	degrees_Kelvin	-0.9999995e9
creationDate	[nspid]DifferenceImage	WSA NonSurvey	the date that this difference image was created in the format MM-DD-YYYY-Thh.mm.ss	datetime	8	MM-DD-YYYY-Thh.mm.ss		TIME_DATE
creationDate	[nspid]Multiframe	WSA NonSurvey	File creation date (YYYY-MM-DD HH:MM:SS) {image primary HDU keyword: DATE}	datetime	8	MM-DD-YYYY	12-31-9999	TIME_DATE
creationDate	[nspid]MultiframeDetector	WSA NonSurvey	Creation date/time of file {image extension keyword: DATE}	datetime	8	MM-DD-YYYY:hh:mm:ss.sss	12-31-9999	??
crowd	[nspid]RequiredMosaic, [nspid]RequiredStack	WSA NonSurvey	CASU source extraction tool option to switch on/off (1/0) crowded field analysis (recommended value=1)	tinyint	1		0	??
crowdedFlag	[nspid]MultiframeDetector	WSA NonSurvey	Crowded field analysis flag (0 none, 1 active) {catalogue extension keyword:  CROWDED}	tinyint	1		0	CODE_MISC
			Tunable parameter, detection algorithm tried to disentangle overlapping images or images supperposed on the "slowly" varying background of other large images (default) otherwise just straighforward isophotal detection.
crPixX	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Pixel coordinate of the reference point on axis 1 {image extension keyword: CRPIX1}	float	8	pixels		POS_CCD_X
crPixY	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Pixel coordinate of the reference point on axis 2 {image extension keyword: CRPIX2}	float	8	pixels		POS_CCD_Y
crUnit1	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Unit of right ascension co-ordinates {image extension keyword: CRUNIT1}	varchar	8		NONE
crUnit2	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Unit of declination co-ordinates {image extension keyword: CRUNIT2}	varchar	8		NONE
crValX	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Coordinate value at reference point on axis 1 {image extension keyword: CRVAL1}	float	8		-0.9999995e9	POS_CCD_X
crValY	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Coordinate value at reference point on axis 2 {image extension keyword: CRVAL2}	float	8		-0.9999995e9	POS_CCD_Y
cryostPres	[nspid]Multiframe	WSA NonSurvey	Cryostat Pressure {image primary HDU keyword: CC_PRES}	float	8	millibar	-0.9999995e9
cTypeX	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	G&C WCS type, eg 'RA---ZPN' {image extension keyword: CTYPE1}	varchar	8			POS_EQ_RA_MAIN
cTypeY	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	G&C WCS type, eg 'DEC--ZPN' {image extension keyword: CTYPE2}	varchar	8			POS_EQ_DEC_MAIN
cuEventID	[nspid]ArchiveCurationHistory, [nspid]AstrCalVers, [nspid]CurrentAstrometry, [nspid]CurrentNightlyExt, [nspid]CurrentPhtSoln, [nspid]CurrentSpatialMap, [nspid]CurrentStdStarInfo, [nspid]Detection, [nspid]DetectorSetUp, [nspid]DifferenceImage, [nspid]MergeLog, [nspid]Multiframe, [nspid]MultiframeDetector, [nspid]MultiframeSetUp, [nspid]PhotCalVers, [nspid]PreviousAstrometry, [nspid]PreviousNightlyExt, [nspid]PreviousPhtSoln, [nspid]PreviousSpatialMap, [nspid]PreviousStdStarInfo, [nspid]ProgrammeCurationHistory, [nspid]ProgrammeFrame, [nspid]Provenance, [nspid]Source	WSA NonSurvey	UID of curation event giving rise to this record	int	4			REFER_CODE
cuID	[nspid]ArchiveCurationHistory, [nspid]CurationTask, [nspid]RequiredCurationTask	WSA NonSurvey	the unique curation task ID	smallint	2			REFER_CODE
curator	[nspid]ArchiveCurationHistory	WSA NonSurvey	The archive curation scientist responsible for this event	varchar	16			??
cutOff	[nspid]Filter	WSA NonSurvey	The 50% cut-off wavelength of the filter	real	4	microns		??
cutOn	[nspid]Filter	WSA NonSurvey	The 50% cut-on wavelength of the filter	real	4	microns		??
cx	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	unit vector of spherical co-ordinates of device centre	float	8			POS_EQ_X
cx	[nspid]Detection, [nspid]MergeLog, [nspid]Source	WSA NonSurvey	unit vector of spherical co-ordinates	float	8			POS_EQ_X
cx	[nspid]Detection, [nspid]Source	WSA NonSurvey	unit vector of spherical co-ordinate	float	8			POS_EQ_X
cy	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	unit vector of spherical co-ordinates of device centre	float	8			POS_EQ_Y
cy	[nspid]Detection, [nspid]MergeLog, [nspid]Source	WSA NonSurvey	unit vector of spherical co-ordinates	float	8			POS_EQ_Y
cy	[nspid]Detection, [nspid]Source	WSA NonSurvey	unit vector of spherical co-ordinate	float	8			POS_EQ_Y
cz	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	unit vector of spherical co-ordinates of device centre	float	8			POS_EQ_Z
cz	[nspid]Detection, [nspid]MergeLog, [nspid]Source	WSA NonSurvey	unit vector of spherical co-ordinates	float	8			POS_EQ_Z
cz	[nspid]Detection, [nspid]Source	WSA NonSurvey	unit vector of spherical co-ordinate	float	8			POS_EQ_Z