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 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '00310125000' / Observation ID TARG_ID = '310125 ' / Target ID SEG_NUM = '0 ' / Segment number TIMESYS = 'TT ' / Time system MJDREFI = 51910. / Reference MJD Integer part MJDREFF = 0.00074287037 / Reference MJD fractional TIMEUNIT= 's ' / Time unit for the time header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error TSTART = 230793409.41636 / Start time DATE-OBS= '2008-04-25T05:16:49.4' / Start Date TSTOP = 230794550.526467 / Stop time DATE-END= '2008-04-25T05:35:50.5' / Stop Date CLOCKAPP= F / If clock correction are applied (F/T) ORIGIN = 'GSFC ' / Source of FITS file CREATOR = 'TDRSS2FITS V3.21' / Program that created this FITS file TLM2FITS= 'V3.21 ' / Telemetry converter version number DATE = '2008-04-25T05:49:26' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -2.7428 / UTCF at TSTART CHECKSUM= 'eHjMhFhKeFhKeFhK' / HDU checksum updated 2008-04-25T05:49:26 DATASUM = ' 0' / data unit checksum updated 2008-04-25T05:49:26 END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 6 / width of table in bytes NAXIS2 = 1024 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 2 / number of fields in each row TTYPE1 = 'CHANNEL ' / label for field 1 TFORM1 = '1I ' / data format of field: 2-byte INTEGER TUNIT1 = 'chan ' / physical unit of field TTYPE2 = 'COUNTS ' / label for field 2 TFORM2 = '1J ' / data format of field: 4-byte INTEGER TUNIT2 = 'count ' / physical unit of field EXTNAME = 'SPECTRUM' / name of this binary table extension TLMIN1 = 0 / minimum legal value in the column TLMAX1 = 1023 / maximum legal value in the column MESGNAME= 'XRT_SPECTRUM' / Name of the message TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '00310125000' / Observation ID TARG_ID = '310125 ' / Target ID SEG_NUM = '0 ' / Segment number CREATOR = 'TDRSS2FITS V3.21' / Program that created this FITS file ORIGIN = 'GSFC ' / Source of FITS file TLM2FITS= 'V3.21 ' / Telemetry converter version number EQUINOX = 2000 / Equinox RADECSYS= 'FK5 ' / Coordinates system TIMESYS = 'TT ' / Time system MJDREFI = 51910. / Reference MJD Integer part MJDREFF = 0.00074287037 / Reference MJD fractional TIMEUNIT= 's ' / Time unit for the time header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error CLOCKAPP= F / If clock correction are applied (F/T) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock DATE = '2008-04-25T05:49:26' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 230793409.41636 / Start time DATE-OBS= '2008-04-25T05:16:49.4' / Start Date TSTOP = 230794550.526467 / Stop time DATE-END= '2008-04-25T05:35:50.5' / Stop Date UTCFINIT= -2.7428 / UTCF at TSTART HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'SPECTRUM' / Time ordered data HDUCLAS2= 'TOTAL ' / Source + background HDUCLAS3= 'COUNT ' / Data provided as counts HDUVERS = '1.2.0 ' / Version of format (OGIP memo OGIP-92-007) TRIGGER = 310125 / Trigger Number DATAMODE= 'WINDOWED' / Instrument operating mode AREASCAL= 1. / area scaling factor BACKFILE= 'none ' / associated background filename BACKSCAL= 1. / background file scaling factor CORRFILE= 'none ' / associated correction filename CORRSCAL= 1. / correction file scaling factor RESPFILE= 'none ' / associated redistrib matrix filename ANCRFILE= 'none ' / associated ancillary response filename PHAVERSN= '1992a ' / obsolete DETCHANS= 1024 / total number possible channels CHANTYPE= 'PHA ' / channel type (PHA, PI etc) POISSERR= T / Poissonian errors to be assumed STAT_ERR= 0 / no statistical error specified SYS_ERR = 0 / no systematic error specified GROUPING= 0 / no grouping of the data has been defined QUALITY = 0 / no data quality information specified PACKET1 = T / Data from packet #1 present PACKET2 = T / Data from packet #2 present PACKET3 = T / Data from packet #3 present PCKT_SQ1= 132 / Actual PKT#1 CCSDS sequence number PCKT_SQ2= 133 / Predicted PKT#2 CCSDS sequence number PCKT_SQ3= 134 / Predicted PKT#3 CCSDS sequence number APID = 1249 / Application Process Identifier XRA_OBJ = 341.666381835938 / [deg] XRT RA location of GRB or Object XDEC_OBJ= 44.3411254882812 / [deg] XRT DEC location of GRB or Object TELAPSE = 1141.11010742188 / TSTOP - TSTART ONTIME = 1141.11010742188 / Time on target LIVETIME= 1141.11010742188 / Ontime multiplied by DEADC EXPOSURE= 1141.11010742188 / Total exposure, with all known correction DEADC = 1. / dead time correction TERMMODE= 65 / spectrum termination mode XRTMODE = 6 / XRT mode WAVEFORM= 60 / XRT waveform BIASLVL = 0. / Bias calculated on board [if = 0 not applied] P1UTCC = -2.7428 / [s] ccsds PacKeT #1 TIME=P1UTCCS+P1UTCCSS*2e-5 P1UTCCS = -3 / Packet #1 UTC Correction Seconds P1UTCCSS= 12860 / [2*10**(-5) s] Packet #1 UTC Correction SubSecoPKT1TIME= 230794550.645 / [s] ccsds PacKeT #1 TIME=PKT1SEC+PKT1SUBS*2e-5 PKT1SEC = 230794550 / ccsds PacKeT #1 SEConds PKT1SUBS= 32250 / [2*10**(-5) s] ccsds PacKeT #1 SUBSeconds CHECKSUM= 'Za6AaT36TY3AZY33' / HDU checksum updated 2008-04-25T05:49:31 DATASUM = '2814290241' / data unit checksum updated 2008-04-25T05:49:31 P2UTCC = -2.7428 / [s] Packet #2 UTC Correction time P2UTCCS = -3 / Packet #2 UTC Correction Seconds P2UTCCSS= 12860 / [2*10**(-5) s] Packet #2 UTC Correction SubSecoPKT2TIME= 230794550.74172 / [s] ccsds PacKeT #2 TIME=PKT2SEC+PKT2SUBS*2e-5 PKT2SEC = 230794550 / ccsds PacKeT #2 SEConds PKT2SUBS= 37086 / [2*10**(-5) s] ccsds PacKeT #2 SUBSeconds P3UTCC = -2.7428 / [s] Packet #3 UTC Correction time P3UTCCS = -3 / Packet #3 UTC Correction Seconds P3UTCCSS= 12860 / [2*10**(-5) s] Packet #3 UTC Correction SubSecoPKT3TIME= 230794550.86112 / [s] ccsds PacKeT #3 TIME=PKT3SEC+PKT3SUBS*2e-5 PKT3SEC = 230794550 / ccsds PacKeT #3 SEConds PKT3SUBS= 43056 / [2*10**(-5) s] ccsds PacKeT #3 SUBSeconds XRTORGMD= 'WINDOWED' / Original Spectrum Data form Windowed Timing ModXRTTDRSS= T / TDRSS message processed by xrttdrss_0.3.9 task END ¸Æe º s n ˆ D ™ ^ ! 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