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 = '00805318000' / Observation ID TARG_ID = '805318 ' / 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 = 537682720.3937 / Start time DATE-OBS= '2018-01-15T04:18:40.4' / Start Date TSTOP = 537682854.56576 / Stop time DATE-END= '2018-01-15T04:20:54.6' / 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 = '2018-01-15T04:20:51' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -20.31874 / UTCF at TSTART CHECKSUM= 'gHkOiFhOgFhOgFhO' / HDU checksum updated 2018-01-15T04:20:51 DATASUM = ' 0' / data unit checksum updated 2018-01-15T04:20:51 END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 18 / width of table in bytes NAXIS2 = 100 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 3 / number of fields in each row TTYPE1 = 'TIME ' / label for field 1 TFORM1 = '1D ' / data format of field: 8-byte DOUBLE TUNIT1 = 's ' / physical unit of field TTYPE2 = 'RATE ' / label for field 2 TFORM2 = '1D ' / data format of field: 8-byte DOUBLE TUNIT2 = 'count/s ' / physical unit of field TTYPE3 = 'XRTMODE ' / label for field 3 TFORM3 = '1I ' / data format of field: 2-byte INTEGER EXTNAME = 'RATE ' / name of this binary table extension MESGNAME= 'XRT_LIGHTCURVE' / Name of the message COMMENT XRTMODE values COMMENT 1=null 2=Short Image 3=Long Image 4=Pile-Up Photodiode COMMENT 5=Low Rate Photodiode 6=Windowed Timing 7= Photon-Counting COMMENT 8=RAW data 9=Bias map 10=Stop TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '00805318000' / Observation ID TARG_ID = '805318 ' / 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 = '2018-01-15T04:20:51' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 537682720.3937 / Start time DATE-OBS= '2018-01-15T04:18:40.4' / Start Date TSTOP = 537682854.56576 / Stop time DATE-END= '2018-01-15T04:20:54.6' / Stop Date UTCFINIT= -20.31874 / UTCF at TSTART TIMEPIXR= 0. / Bin time beginning=0.0 middle=0.5 end=1. HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'LIGHTCURVE' / Time ordered data HDUCLAS2= 'TOTAL ' / Source + background HDUCLAS3= 'RATE ' / Data provided as rate NUMBINS = 100 / Number of valid bins in the lightcurve TRIGGER = 805318 / Trigger Number XRA_OBJ = 12.0481376647949 / [deg] XRT RA location GRB or Object XDEC_OBJ= -15.6089611053467 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 134.172060012817 / TSTOP - TSTART ONTIME = 131.836242675781 / Time on target LIVETIME= 131.836242675781 / Ontime multiplied by DEADC EXPOSURE= 131.836242675781 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -20.31874 / [s] UTC Correction TIME UTCCSEC = -21 / UTC Correction Seconds UTCCSUBS= 34063 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 537682854.64904 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 537682854 / ccsds PacKeT SEConds PKTSUBS = 32452 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'YaHfbWEcZaEcaUEc' / HDU checksum updated 2018-01-15T04:20:51 DATASUM = '229696543' / data unit checksum updated 2018-01-15T04:20:51 END A12dA1i;A1;@RDXA1=޾@"@A1Ɓ@1pA1O$t@0ܠA1Ǥ@0ܠA1`j@ApA1 Z@@dA1q@::A1S@&{A1@D#A1 @= A1=G@ATA1v@*:A1@ATA1.%@0ܠA1ȴ@5A1?k@&{A1@ApA1PB@0ܠA1Uq@<aA1a@- A1(@CA1s>W@= A1@;*A1@EA1 '=@[*A1m@ ܠA1m@= 1 A1#@D#A1/S@4A1V@DA1@@GkPA1ɜ@ A1R@@*:A1?@5A1cn@{A1(N@= 1 A1t}@,aA1n@ ܠA1@7kPA1 @7kPA1X:@([ A1j@C4(A1@,aA11A @5A1P@6{A1B@8[ A1*@{A1S6@$A1pe@IA1e@{A1@;*A1vYK@:A1z@N A1@@A1B@ZA1@  A1!@- A1+@FhA12F@BDXA1qv@@ܠA1D@;*A1̷@DA1U[@  A13@1pA1fb@@A1D@,aA1w@  A1@,aA1,@([ A1@> A1s.@- A1#]@*:A1@$A14\@([ A1C@PA1Es@= 1 A1E@$A1V@7kPA1ߌ@2@A1h.? 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