19 Alphabetical listing of all keywords with section references

Below is an alphabetical listing of all keywords used in this document, both new SOLARNET keywords and FITS standard/widely accepted FITS convention keywords.

Keyword origins are defined using a code:

• N: New SOLARNET keywords defined in this document

• S: Keywords defined in the FITS standard (listed in the FITS standard Appendix C)

• P: Keywords defined in Paper I-V and Thompson (2006)[1].

• O: Other keywords in common use before being specified in this document

Solarnet keywords

Keyword	Origin	Description	Section Reference
ANA_NCMP	N	the number of components used in the analysis	Appendix IX
AO_LOCK	N	the status of any adaptive optics. For individual exposures should be either 0 or 1	5.5, 18.6
AO_NMODE	N	indicates the number of adaptive optics modes corrected	5.5, 18.6
ATMOS_R0	N	the atmospheric coherence length for adaptive optics systems	5.5, 16.0, 18.7, Appendix I, Appendix I-a, Appendix I-b
AUTHOR	S	Author	6.0, 15.5
BLANK	S	Value of missing pixels (floating HDU)	5.6.2, 15.4
BNAME	N	a human readable explanation of the data contents	5.1, 15.4, 18.5
BNDCTR	N	For radio observations may be used instead of WAVELNTH to specify a corresponding frequency in Hz	5.4, 18.6
BSCALE		Linear scaling factor
BTYPE	N	describe what the data cube itself represents	5.1, 15.4
BUNIT	S	Units	5.1, 15.4
BZERO	S	Scale Base	Appendix IV
CADAVG	N	[s] Average actual cadence. the average frame-to-frame spacing in seconds	5.3, 18.3
CADENCE	N	[s] Planned cadence. the planned/commanded frame-to-frame spacing in seconds	5.3, 18.3
CADMAX	N	[s] Maximum actual frame-to-frame spacing. the maximum frame-to-frame spacing in seconds	5.3, 18.3
CADMIN	N	[s] Minimum actual frame-to-frame spacing. the minimum frame-to-frame spacing in seconds	5.3, 18.3
CADVAR	N	[s] Variance of frame-to-frame spacing. the variance of the frame-to-frame spacing in seconds	5.3, 18.3
CAMERA	O	Name of the camera	6.0, 7.2, 15.5
CAMPAIGN	O	Observation campaign	6.0, 15.5
CAR_ROT	P	Carrington rotation	3.2
CCURRENT	N	a comma-separated list of its own file name plus the names of all files containing concurrent Obs-HDUs	15.5, Appendix V-b
CDELTia	P	Coordinate scale increment	3.1
CDi_ja	P	Linear-transformation matrix element
CHECKSUM	P	Checksum	9.0, 15.1
CMP_NPn	N	Number of parameters	Appendix IX
CMPDESn	N	Description of component n for Type P data	Appendix IX
CMPINCn	N	Component inclusion	Appendix IX
CMPMULn	N	Component type	Appendix IX
CMPNAMn	N	Component name	Appendix IX
CMPSTRn	N	Component string	Appendix IX
CMPTYPn	N	Component type	Appendix IX
CNAMEia	P	Coordinate axis name	5.1
COMMENT	S	Comment	2.4, 5.5
COMP_ALG	N	Name of lossy compression algorithm	5.5, 18.7
COMPQUAL	N	Quality of data after lossy compression	5.5, 18.7
CONSTEXT	N	Constant mask	Appendix IX
CONTINUE	P	Continue	8.2, 15.5, 17.0, 18.4, 18.10, 18.13, Appendix I, Appendix II, Appendix IV
CPDISia	N	Distortion correction
CPERRia	N	Maximum value of prior distortion correction for axis i
CQDISia	P	Distortion correction	Appendix VI
CQERRia	P	Maximum value of posterior distortion correction for axis i	Appendix VI
CRDERia	P	Random error	3.1
CREATOR	O	File Creator	8.1, 18.10, Appendix IV
CROTAia	O	Coordinate rotation	3.0
CRPIXja	P	Reference pixel	3.1, 3.2
CRVALia	P	Reference value	3.1
CSYERia	P	Systematic error	3.1
CTYPEia	P	Coordinate type	3.1, 4.1, 5.1, 5.4
CUNITia	P	Coordinate units	5.4
CWDISia	N	Distortion correction	Appendix VI
CWERRia	N	Maximum value of weighted distortion correction for axis i	Appendix VI
DATAEXT	N	Data extension	Appendix IX, Appendix VII
DATAKURT	O	Kurtosis	5.6, 18.8
DATAMAD	N	data statistic - the mean absolute deviation avg( abs( x-avg(x) ) )	5.6, 18.8
DATAMAX	S	Maximum of data	5.6, 18.8, Appendix III
DATAMEAN	O	Mean of data	5.6, 18.8
DATAMEDN	O	Median of data	5.6, 18.8
DATAMIN	S	Minimum of data	5.6, 18.8, Appendix III
DATANMAD	N	data statistic - normalized mean absolute deviation DATAMAD/DATAMEAN	5.6, 18.8
DATANPnn	N	Normalized Percentiles	5.6
DATANRMS	N	Normalized root mean square	5.6, 18.8
DATAPnn	N	Percentiles	5.6
DATARMS	O	Root mean square	5.6, 18.8
DATASKEW	O	Skewness	5.6, 18.8
DATASUM	O	Sum of data	9.0, 15.1
DATATAGS	N	Data Tags	6.0, 15.5
DATE	S	File Creation Date	2.2, 13.0, 15.1, 18.2
DATE-AVG	P	Average date of observation	4.0, 18.2
DATE-BEG	P	Aquisition start time	2.2, 4.0, 4.1, 13.0, Appendix III
DATE-END	P	Date of end of observation	4.0, 18.2, Appendix III
DATEREF	P	Reference date	4.0, 4.1, 14.0, 15.2, Appendix I, Appendix I-a, Appendix III
DETECTOR	O	detector	6.0, 7.2, 15.5, 18.12, Appendix IV
DPja	P	Primary distortion parameter	Appendix VI
DQia	P	Posterior distortion parameter	Appendix VI
DSUN_AU	N	[AU] Distance from instrument to Sun centre	3.2, 18.1
DSUN_OBS	P	Distance to Sun	3.2, 4.0, 15.3.3
DWia	N	Distortion correction	Appendix VI, Appendix VI-a
ELEV_ANG	N	[deg] Telescope elevation angle	5.5, 18.7
EXTLEVEL		Extension level
EXTNAME	S	Extension name	2.1, 2.2, 5.6.2, 8.2, 12.0, 17.0, Appendix I, Appendix I-a, Appendix I-b, Appendix II, Appendix III, Appendix III-a, Appendix IV, Appendix IX, Appendix VII
EXTVER		Extension version	2.1
FILENAME	P	Filename	15.1, Appendix IV, Appendix V-a
FILEVERP	N	File Version Pattern	Appendix V-a
FILTER	O	Filters	6.0, 7.2, 15.5, 18.12
FT_LOCK	N	feature tracking status (0 no tracking - 1 tracking)	5.5, 18.6
GEOX_OBS	P	Observer X Position	3.2, 15.3.2
GEOY_OBS	P	Observer Y Position	3.2, 15.3.2
GEOZ_OBS	P	Observer Z Position	3.2, 15.3.2
GRATING	O	Grating	6.0, 7.2, 15.5
HASH_SW	N	Commit hash of processing software applied	8.1, 18.10
HGLN_OBS	P	Observer Heliographic Longitude	3.2, 4.0, 15.3.3
HGLT_OBS	P	Observer Heliographic Latitude	3.2, 4.0, 15.3.3
iCRVLn	P	Reference value	Appendix I-a
iCTYPn	P	Coordinate type
INCLEXT	N	Component inclusion mask	Appendix IX
INFO_URL	N	a human-readable web page describing the data	9.0, 18.11
INSTRUME	S	Instrument	6.0, 7.2, 15.5, 18.12
jCRPXn	P	Reference pixel	Appendix I-a
LEVEL	O	Data level of fits file	8.0, 8.1, 18.10
METADIM	N	Metadata dimension splits	17.0, Appendix III
METADIMn	N	Metadata dimension splits	Appendix III-a
METAFILS	N	Metadata filenames	17.0, Appendix III
MISSION	N	Name of mission	6.0, 15.5
MOSAICID	N	Mosaic ID	7.4, 18.12
NAPRXPIX	N	the number of pixels with approximated values	5.6.1, 18.9
NASIXn	S	Number of elements along axis
NAXIS	S	Number of axes	3.1, 15.2, Appendix III, Appendix IV, Appendix VII
NBIN	N	Combined binning factor (Product of all NBINj)	5.2, 7.2, 15.4, 18.12
NBINj	N	Binning in dimension n	5.2, 15.4
NDATAPIX	N	the number of usable pixels: NTOTPIX - NLOSTPIX - NSATPIX - NSPIKPIX	5.6.1, 18.9
NLOSTPIX	N	the number of lost pixels due to telemetry/acquisition glitches	5.6.1, 18.9
NMASKPIX	N	the number of dust-affected/hot/cold/padded pixels etc.	5.6.1, 18.9
NSATPIX	N	the number of saturated pixels	5.6.1, 18.9
NSPIKPIX	N	the number of identified spike pixels	5.6.1, 18.9
NSUMEXP	N	Number of summed exposures	5.2, 15.4
NTOTPIX	N	the number of potentially usable pixels: the number of data cube pixels minus NMASKPIX	5.6.1, 18.9
OBS_DESC	O	Observation description	6.0, 15.5
OBS_HDU	N	This HDU contains observational data	2.2, 8.0, 13.0, Appendix IV, Appendix IX
OBS_LOG	N	URL of observation log	5.5, 9.0, 18.7
OBS_MODE	O	Observation mode	6.0, 7.2, 15.5
OBS_VR	N	[km/s] Observer’s outward velocity w.r.t. Sun	3.2, 15.6
OBSERVER	S	Observer	6.0, 15.5
OBSGEO-X	P	Observer X Position	3.2, 15.3.1
OBSGEO-Y	P	Observer Y Position	3.2, 15.3.1
OBSGEO-Z	P	Observer Z Position	3.2, 15.3.1
OBSRVTRY	N	Name of Observatory	6.0, 15.5
OBSTITLE	O	Observation title	6.0, 15.5
ORIGIN	S	File originator	8.0, 15.1
PARENTXT	N	Identifies parent extension(s), path(s), file name(s), and extension name(s), likely using external extension reference syntax	8.0, Appendix IX, Appendix VII
PCi_ja	P	linear transformation matrix element	3.1
PCONSna	N	Parameter constant	Appendix IX
PCT_APRX	N	Percentage of approximated pixels	5.6.1, 18.9
PCT_DATA	N	Percentage of usable pixels	5.6.1, 18.9
PCT_LOST	N	Percentage of lost pixels	5.6.1, 18.9
PCT_MASK	N	Percentage of masked pixels	5.6.1, 18.9
PCT_SATP	N	Percentage of saturated pixels	5.6.1, 18.9
PCT_SPIK	N	Percentage of spike pixels	5.6.1, 18.9
PDESCna	N	Parameter Desscription	Appendix IX
PINITna	N	Initial value	Appendix IX
PIXLISTS	N	Pixel lists	17.0, Appendix II, Appendix IV
PIXTYPE	N	Pixel Type	17.2, Appendix II
PLANNER	O	Planner	6.0, 15.5, 16.0
PMAXna	N	Maximum value	Appendix IX
PMINna	N	Minimum value	Appendix IX
PNAMEna	N	Parameter name	Appendix IX
POINT_ID	N	Pointing ID	7.1, 7.2, 7.3, 15.9, 18.12, Appendix V-b
POLCANGL	N	Polarimetric angle	5.4.1, 15.8
POLCCONV	N	Polarimetric conversion	5.4.1, 15.8
PRBRAna	N	Branch name	8.2
PRENVn	N	Processing environment	8.2
PRHSHna	N	GIT commit hash for PRLIB1A	8.2
PRLIBna	N	Software library containing PRPROCn	8.2
PRLOGn	N	log message of PRPROCn	8.2
PRMODEn	N	processing mode of PRPROCn	8.2, Appendix V-a
PROJECT	N	Name of project	6.0, 15.5
PRPARAn	N	list of parameters/options for PRPROCn	8.2
PRPROCn	N	name of procedure performing processing step n	8.2
PRPVERn	N	version number of processing procedure PRPROCn	8.2
PRREFn	N	Factors influencing PRSTEP1	3.1, 8.2
PRSTEPn	N	processing step type for step n	8.1, 8.2
PRVERna	N	version number of processing procedure PRPROC1	8.2
PTRAna	N	Linear transformation coefficient A	Appendix IX
PTRBna	N	Linear transformation constant B	Appendix IX
PUNITna	N	Parameter unit	Appendix IX
RELEASE	N	Release date	9.0, 18.11
RELEASEC	N	Release administrator	9.0, 18.11
REQUESTR	N	Requester	6.0, 15.5
RESEXT	N	Result extension	Appendix IX
RESIDEXT	N	Residual extension	Appendix IX
RESOLVPW	N	Resolving power	5.4, 18.6
RESPAPPL	N	Applid response function	5.4, 18.6
RESPONSE	N	Response function	5.4, 18.6
ROT_COMP	N	Solar rotation compensation on (1)/off (0)	5.5, 18.6
ROT_FORM	N	Rotation formula	5.5, 18.6
ROT_MODL	N	Model used for rotation compensation	5.5, 18.6
RSUN_ARC	O	Solar angular radius	3.2
RSUN_REF	P	Solar radius. [m] Solar rad. used for calc. px scale	3.1, 18.7
SETTINGS	N	Settings	6.0, 7.2, 15.5
SLIT_WID	N	Slit width	5.4, 7.2, 15.7
SOLAR_B0	O	Observer latitude	3.2
SOLAR_EP	O	Ecliptic angle	3.2
SOLAR_P0	O	Solar angle	3.2
SOLARNET	N	specifies if an Obs-HDU is fully (1.0) or partially compliant (0.5)	2.2, 2.3, 13.0, 17.0, Appendix I, Appendix II, Appendix III, Appendix IX
SOLNETEX	N	SOLARNET exceptions	2.2, 16.0
SPECSYS	P	Spectral reference frame	3.2, 15.6
SVO_GRP	N	SVO Group	7.3, 18.12
SVO_SEPn		Separation keywords	7.2
TCTYPn	P	Table column type	17.2, Appendix II
TDESCn	N	Table column description	18.13
TDIMn	S	Table column dimensions	Appendix IV
TELCONFG	N	Telescope configuration	6.0, 15.5
TELESCOP	S	Telescope	6.0, 15.5
TEXPOSUR	N	Single exposure time	5.2, 15.4
TFORMn	S	Table column format
TIMESYS	P	Time system	4.0, 18.2
TKEYSn	N	Table keywords	Appendix IV
TPCn_na	P	Pixel list flag	Appendix II
TPXLSn	N	Pixel lists	Appendix IV
TTYPEn	S	Table column name	5.6.2, 17.2, Appendix I, Appendix II, Appendix IV, Appendix VII
TVARKn	N	Var keys	Appendix IV
TZEROn	S	Zero point	Appendix IV
UCD		Unified Content Descriptor	5.1, 18.5
VAR_KEYS	N	Variance keys	17.0, Appendix I, Appendix I-d, Appendix IV, Appendix VII
VELOSYS	P	Velocity system	3.2, 15.6
VERS_CAL	N	version number of calibration pack applied	8.1, 18.10
VERS_SW	N	version number of processing software applied	8.1, 18.10
VERSION	N	Processed version	8.0, 18.10
WAVEBAND	N	Waveband description	5.4, 18.6
WAVECOV	N	Wavelength coverage	5.4, 18.4
WAVELNTH	O	Characteristic wavelength	5.4, 18.6, Appendix IV
WAVEMAX	N	the maximum wavelength of the spectral range with units specified in WAVEUNIT	5.4, 15.6, 18.4
WAVEMIN	N	the minimum wavelength of the spectral range with units specified in WAVEUNIT	5.4, 15.6, 18.4
WAVEREF	N	should be set to air or vacuum to signal whether wavelengths are given for air or vacuum	5.4, 15.6
WAVEUNIT	O	Wavelength unit	5.4, 15.6
WCSAXES	P	WCS axes	3.1, 15.2, Appendix III
WCSNAMEa	P	WCS name	Appendix I-d
WCSNn	P	WCS name	17.1, Appendix I-b
WGTEXT	N	extension weights	Appendix IX
XDIMENm	N	Dimension number	Appendix IX
XNAXIS	N	Number of axes in external extension	Appendix IX, Appendix VII
XNAXISn	N	Number of elements along axis in external extension	Appendix IX, Appendix VII
XPOSURE	P	Exposure time	5.2, 7.2, 15.4, Appendix V-c
XTIMXTm	N	Dimension extension
XTYPEm	N	Dimension type	Appendix IX

Number of keywords: 223

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[1]

Some of the WCS keywords defined in these papers are also defined in the FITS standard Table 22