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WMAP Time-Ordered Data Archive
FITS Header Information
The data made available through this page has been updated. The most recent version of this data may be accessed through /product/map/current/
Each file in the WMAP Time-Ordered Archive contains five FITS binary table extensions. Below is a sample of each header in the file.
Primary Header
SIMPLE = T / file does conform to FITS standard BITPIX = 8 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H DATE = '2006-01-09T18:35:42' / file creation date (YYYY-MM-DDThh:mm:ss UT) COMMENT This file contains a single day of WMAP time series data. COMMENT IDL software will be provided at the LAMBDA site to read this data. REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/' TIME2JD = 2.4500E+06 / Add to convert table time to Julian Day STIME = '2001222000000' / Start time: YYYYDDDhhmmss ETIME = '2004221235900' / End time: YYYYDDDhhmmss VERSION = 'PASS 2 ' / Internal WMAP Version RELEASE = 'DR2 ' NUMREC = 1875 / Number of records END
Meta Data Table
XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 1168 / width of table in bytes NAXIS2 = 1875 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 8 / number of fields in each row TTYPE1 = 'TIME ' / label for field 1 TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 'GMT ' / physical unit of field TTYPE2 = 'POSITION' / label for field 2 TFORM2 = '3D ' / data format of field: 8-byte DOUBLE TUNIT2 = 'km ' / physical unit of field TTYPE3 = 'VELOCITY' / label for field 3 TFORM3 = '3D ' / data format of field: 8-byte DOUBLE TUNIT3 = 'km/s ' / physical unit of field TTYPE4 = 'GEOPOS ' / label for field 4 TFORM4 = '3D ' / data format of field: 8-byte DOUBLE TUNIT4 = 'km ' / physical unit of field TTYPE5 = 'GEOVEL ' / label for field 5 TFORM5 = '3D ' / data format of field: 8-byte DOUBLE TUNIT5 = 'km/s ' / physical unit of field TTYPE6 = 'QUATERN ' / label for field 6 TFORM6 = '132D ' / data format of field: 8-byte DOUBLE TTYPE7 = 'NSCI ' / label for field 7 TFORM7 = '1J ' / data format of field: 4-byte INTEGER TTYPE8 = 'NDIHK ' / label for field 8 TFORM8 = '1J ' / data format of field: 4-byte INTEGER EXTNAME = 'Meta Data Table' / name of this binary table extension COMMENT This table provides general information for each TOD COMMENT archive record of data from the WMAP satellite. COMMENT The position and velocity are cartesian vectors, COMMENT measured in km and km/s respectively, in a barycentric COMMENT coordinate system with the +X axis in the J2000 0 hr RA COMMENT direction and the +Z axis in the J2000 +90 deg COMMENT Declination direction. Geocentric versions are also COMMENT supplied. COMMENT There is a quaternion for each major science frame in COMMENT a record plus the preceding science frame and the COMMENT two following science frames [provided for interpolation COMMENT purposes]. It is stored as a 4x33 element array. REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/' TIME2JD = 2.4500E+06 / Add to convert table time to Julian Day END
Science Table
XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 1788 / width of table in bytes NAXIS2 = 56250 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 27 / number of fields in each row TTYPE1 = 'TIME ' / label for field 1 TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 'GMT ' / physical unit of field TTYPE2 = 'K11 ' / label for field 2 TFORM2 = ' 12E ' / data format of field: 4-byte REAL TUNIT2 = 'mK ' / physical unit of field TTYPE3 = 'K12 ' / label for field 3 TFORM3 = ' 12E ' / data format of field: 4-byte REAL TUNIT3 = 'mK ' / physical unit of field TTYPE4 = 'KA11 ' / label for field 4 TFORM4 = ' 12E ' / data format of field: 4-byte REAL TUNIT4 = 'mK ' / physical unit of field TTYPE5 = 'KA12 ' / label for field 5 TFORM5 = ' 12E ' / data format of field: 4-byte REAL TUNIT5 = 'mK ' / physical unit of field TTYPE6 = 'Q11 ' / label for field 6 TFORM6 = ' 15E ' / data format of field: 4-byte REAL TUNIT6 = 'mK ' / physical unit of field TTYPE7 = 'Q12 ' / label for field 7 TFORM7 = ' 15E ' / data format of field: 4-byte REAL TUNIT7 = 'mK ' / physical unit of field TTYPE8 = 'Q21 ' / label for field 8 TFORM8 = ' 15E ' / data format of field: 4-byte REAL TUNIT8 = 'mK ' / physical unit of field TTYPE9 = 'Q22 ' / label for field 9 TFORM9 = ' 15E ' / data format of field: 4-byte REAL TUNIT9 = 'mK ' / physical unit of field TTYPE10 = 'V11 ' / label for field 10 TFORM10 = ' 20E ' / data format of field: 4-byte REAL TUNIT10 = 'mK ' / physical unit of field TTYPE11 = 'V12 ' / label for field 11 TFORM11 = ' 20E ' / data format of field: 4-byte REAL TUNIT11 = 'mK ' / physical unit of field TTYPE12 = 'V21 ' / label for field 12 TFORM12 = ' 20E ' / data format of field: 4-byte REAL TUNIT12 = 'mK ' / physical unit of field TTYPE13 = 'V22 ' / label for field 13 TFORM13 = ' 20E ' / data format of field: 4-byte REAL TUNIT13 = 'mK ' / physical unit of field TTYPE14 = 'W11 ' / label for field 14 TFORM14 = ' 30E ' / data format of field: 4-byte REAL TUNIT14 = 'mK ' / physical unit of field TTYPE15 = 'W12 ' / label for field 15 TFORM15 = ' 30E ' / data format of field: 4-byte REAL TUNIT15 = 'mK ' / physical unit of field TTYPE16 = 'W21 ' / label for field 16 TFORM16 = ' 30E ' / data format of field: 4-byte REAL TUNIT16 = 'mK ' / physical unit of field TTYPE17 = 'W22 ' / label for field 17 TFORM17 = ' 30E ' / data format of field: 4-byte REAL TUNIT17 = 'mK ' / physical unit of field TTYPE18 = 'W31 ' / label for field 18 TFORM18 = ' 30E ' / data format of field: 4-byte REAL TUNIT18 = 'mK ' / physical unit of field TTYPE19 = 'W32 ' / label for field 19 TFORM19 = ' 30E ' / data format of field: 4-byte REAL TUNIT19 = 'mK ' / physical unit of field TTYPE20 = 'W41 ' / label for field 20 TFORM20 = ' 30E ' / data format of field: 4-byte REAL TUNIT20 = 'mK ' / physical unit of field TTYPE21 = 'W42 ' / label for field 21 TFORM21 = ' 30E ' / data format of field: 4-byte REAL TUNIT21 = 'mK ' / physical unit of field TTYPE22 = 'GenFlags' / label for field 22 TFORM22 = '1J ' / data format of field: 4-byte INTEGER TTYPE23 = 'DAFlags ' / label for field 23 TFORM23 = '10J ' / data format of field: 4-byte INTEGER TTYPE24 = 'Error1 ' / label for field 24 TFORM24 = '2J ' / data format of field: 4-byte INTEGER TTYPE25 = 'Error2 ' / label for field 25 TFORM25 = '2J ' / data format of field: 4-byte INTEGER TTYPE26 = 'FrmInd ' / label for field 26 TFORM26 = '1J ' / data format of field: 4-byte INTEGER TTYPE27 = 'SciInd ' / label for field 27 TFORM27 = '1J ' / data format of field: 4-byte INTEGER EXTNAME = 'Science Data Table' / name of this binary table extension COMMENT This table contains the WMAP science data. COMMENT The science data has been calibrated and is supplied as COMMENT thermodynamic temperature in millikelvin. COMMENT The data have been co-added to produce a measurement for COMMENT each radiometer. COMMENT See the Explanatory Supplement for details of flag interpretation. REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/' TIME2JD = 2.4500E+06 / Add to convert table time to Julian Day END
Analog Instrument Housekeeping Table
XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 1008 / width of table in bytes NAXIS2 = 3750 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 9 / number of fields in each row TTYPE1 = 'TIME ' / label for field 1 TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 'GMT ' / physical unit of field TTYPE2 = 'PDU ' / label for field 2 TFORM2 = '97J ' / data format of field: 4-byte INTEGER TTYPE3 = 'AEU1 ' / label for field 3 TFORM3 = '57J ' / data format of field: 4-byte INTEGER TTYPE4 = 'AEU2 ' / label for field 4 TFORM4 = '57J ' / data format of field: 4-byte INTEGER TTYPE5 = 'AWIN1 ' / label for field 5 TFORM5 = '16J ' / data format of field: 4-byte INTEGER TTYPE6 = 'AWIN2 ' / label for field 6 TFORM6 = '16J ' / data format of field: 4-byte INTEGER TTYPE7 = 'Counters' / label for field 7 TFORM7 = '5J ' / data format of field: 4-byte INTEGER TTYPE8 = 'FrmInd ' / label for field 8 TFORM8 = '1J ' / data format of field: 4-byte INTEGER TTYPE9 = 'Sweep ' / label for field 9 TFORM9 = '1J ' / data format of field: 4-byte INTEGER EXTNAME = 'AIHK Data Table' / name of this binary table extension COMMENT This table contains the WMAP analog instrument housekeeping COMMENT data. Various signals are listed by mnemonics described COMMENT in the Explanatory Supplement. COMMENT IDL software will be provided at the LAMBDA site to parse this data COMMENT into calibrated data. REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/' TIME2JD = 2.4500E+06 / Add to convert table time to Julian Day END
Digital Instrument Housekeeping Table
XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 184 / width of table in bytes NAXIS2 = 7500 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 4 / number of fields in each row TTYPE1 = 'TIME ' / label for field 1 TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 'GMT ' / physical unit of field TTYPE2 = 'Data ' / label for field 2 TFORM2 = '42J ' / data format of field: 4-byte INTEGER TTYPE3 = 'FrmInd ' / label for field 3 TFORM3 = '1J ' / data format of field: 4-byte INTEGER TTYPE4 = 'DihkInd ' / label for field 4 TFORM4 = '1J ' / data format of field: 4-byte INTEGER EXTNAME = 'DIHK Data Table' / name of this binary table extension COMMENT This table contains the WMAP digital instrument housekeeping COMMENT data. Various signals are listed by mnemonics described COMMENT in the Explanatory Supplement. COMMENT IDL software will be provided at the LAMBDA site to parse this data COMMENT into calibrated data. REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/' TIME2JD = 2.4500E+06 / Add to convert table time to Julian Day END
Line-of-Sight Table
XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 480 / width of table in bytes NAXIS2 = 1 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 20 / number of fields in each row TTYPE1 = 'K1A ' / label for field 1 TFORM1 = '3D ' / data format of field: 8-byte DOUBLE TUNIT1 = 'unit vector' / physical unit of field TTYPE2 = 'K1B ' / label for field 2 TFORM2 = '3D ' / data format of field: 8-byte DOUBLE TUNIT2 = 'unit vector' / physical unit of field TTYPE3 = 'KA1A ' / label for field 3 TFORM3 = '3D ' / data format of field: 8-byte DOUBLE TUNIT3 = 'unit vector' / physical unit of field TTYPE4 = 'KA1B ' / label for field 4 TFORM4 = '3D ' / data format of field: 8-byte DOUBLE TUNIT4 = 'unit vector' / physical unit of field TTYPE5 = 'Q1A ' / label for field 5 TFORM5 = '3D ' / data format of field: 8-byte DOUBLE TUNIT5 = 'unit vector' / physical unit of field TTYPE6 = 'Q1B ' / label for field 6 TFORM6 = '3D ' / data format of field: 8-byte DOUBLE TUNIT6 = 'unit vector' / physical unit of field TTYPE7 = 'Q2A ' / label for field 7 TFORM7 = '3D ' / data format of field: 8-byte DOUBLE TUNIT7 = 'unit vector' / physical unit of field TTYPE8 = 'Q2B ' / label for field 8 TFORM8 = '3D ' / data format of field: 8-byte DOUBLE TUNIT8 = 'unit vector' / physical unit of field TTYPE9 = 'V1A ' / label for field 9 TFORM9 = '3D ' / data format of field: 8-byte DOUBLE TUNIT9 = 'unit vector' / physical unit of field TTYPE10 = 'V1B ' / label for field 10 TFORM10 = '3D ' / data format of field: 8-byte DOUBLE TUNIT10 = 'unit vector' / physical unit of field TTYPE11 = 'V2A ' / label for field 11 TFORM11 = '3D ' / data format of field: 8-byte DOUBLE TUNIT11 = 'unit vector' / physical unit of field TTYPE12 = 'V2B ' / label for field 12 TFORM12 = '3D ' / data format of field: 8-byte DOUBLE TUNIT12 = 'unit vector' / physical unit of field TTYPE13 = 'W1A ' / label for field 13 TFORM13 = '3D ' / data format of field: 8-byte DOUBLE TUNIT13 = 'unit vector' / physical unit of field TTYPE14 = 'W1B ' / label for field 14 TFORM14 = '3D ' / data format of field: 8-byte DOUBLE TUNIT14 = 'unit vector' / physical unit of field TTYPE15 = 'W2A ' / label for field 15 TFORM15 = '3D ' / data format of field: 8-byte DOUBLE TUNIT15 = 'unit vector' / physical unit of field TTYPE16 = 'W2B ' / label for field 16 TFORM16 = '3D ' / data format of field: 8-byte DOUBLE TUNIT16 = 'unit vector' / physical unit of field TTYPE17 = 'W3A ' / label for field 17 TFORM17 = '3D ' / data format of field: 8-byte DOUBLE TUNIT17 = 'unit vector' / physical unit of field TTYPE18 = 'W3B ' / label for field 18 TFORM18 = '3D ' / data format of field: 8-byte DOUBLE TUNIT18 = 'unit vector' / physical unit of field TTYPE19 = 'W4A ' / label for field 19 TFORM19 = '3D ' / data format of field: 8-byte DOUBLE TUNIT19 = 'unit vector' / physical unit of field TTYPE20 = 'W4B ' / label for field 20 TFORM20 = '3D ' / data format of field: 8-byte DOUBLE TUNIT20 = 'unit vector' / physical unit of field EXTNAME = 'LOS Table' / name of this binary table extension REFERENC= 'WMAP Explanatory Supplement: http://lambda.gsfc.nasa.gov/' COMMENT This table contains the unit pointing vectors in spacecraft COMMENT coordinates for each feed line of sight. END
More information concerning the contents of this file is available.
