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 = '01185505000' / Observation ID TARG_ID = '1185505 ' / Target ID SEG_NUM = '0 ' / Segment number TIMESYS = 'TT ' / time system MJDREFI = 51910 / MJD reference day 01 Jan 2001 00:00:00 MJDREFF = 0.00074287037 / MJD reference (fraction of day) 01 Jan 2001 00:TIMEUNIT= 's ' / Time unit for timing header keywords TIERRELA= 1.0E-08 / [s/s] Estimated relative clock rate error TIERABSO= 1. / [s] Estimated absolute clock offset error TSTART = 713789560.99466 / Start time DATE-OBS= '2023-08-15T10:49:49' TSTOP = 713789666.57968 / Stop time DATE-END= '2023-08-15T10:54:21' CLOCKAPP= F / If clock correction are applied (F/T) ORIGIN = 'GSFC ' / Source of FITS file CREATOR = 'TDRSS2FITS V3.22' / Program that created this FITS file TLM2FITS= 'V3.22 ' / Telemetry converter version number DATE = '2023-08-25T08:02:42' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -31.8300200000000 / [s] UTCF at TSTART CHECKSUM= 'jB5JmA3IjA3IjA3I' / HDU checksum updated 2023-08-25T08:37:59 DATASUM = ' 0' / data unit checksum updated 2023-08-25T08:02:42 OBJECT = 'GRB230815a' XOBS_ID = 01185505000 / Generating sequence PROCVER = '3.19.02 ' / Processing script version SOFTVER = 'Hea_27Jul2015_V6.17_Swift_Rel4.5(Bld34)_27Jul2015_SDCpatch_19' CALDBVER= 'b20171016_u20201215_x20230725_m20230721' / CALDB index versions used 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 = '01185505000' / Observation ID TARG_ID = '1185505 ' / Target ID SEG_NUM = '0 ' / Segment number CREATOR = 'TDRSS2FITS V3.22' / Program that created this FITS file ORIGIN = 'GSFC ' / Source of FITS file TLM2FITS= 'V3.22 ' / 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-8 / [s/s] relative errors expressed as rate TIERABSO= 1.0 / [s] timing precision in seconds CLOCKAPP= F / If clock correction are applied (F/T) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock DATE = '2023-08-25T08:02:42' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 713789560.99466 / Start time DATE-OBS= '2023-08-15T10:52:35' TSTOP = 713789666.57968 / Stop time DATE-END= '2023-08-15T10:54:21' UTCFINIT= -31.8300200000000 / [s] 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 = 1185505 / Trigger Number XRA_OBJ = 184.733428955078 / [deg] XRT RA location GRB or Object XDEC_OBJ= -58.0378952026367 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.585019946098 / TSTOP - TSTART ONTIME = 107.359703063965 / Time on target LIVETIME= 107.359703063965 / Ontime multiplied by DEADC EXPOSURE= 107.359703063965 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -31.83002 / [s] UTC Correction TIME UTCCSEC = -32 / UTC Correction Seconds UTCCSUBS= 8499 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 713789666.64482 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 713789666 / ccsds PacKeT SEConds PKTSUBS = 32241 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'fBCKh99KfAAKf79K' / HDU checksum updated 2023-08-25T08:37:59 DATASUM = '3703479828' / data unit checksum updated 2023-08-25T08:02:42 PROCVER = '3.19.02 ' / Processing script version SOFTVER = 'Hea_27Jul2015_V6.17_Swift_Rel4.5(Bld34)_27Jul2015_SDCpatch_19' CALDBVER= 'b20171016_u20201215_x20230725_m20230721' / CALDB index versions used END AE<QAE<($AE<T@] AE=@EAE> F@M 1 AE>@M AE?@R@AE?0@@M AE@/o@M AE@u@S4(AEAA&@\VU AEAɼV@LaAEBR_@TAEB @ATAECc<@HAECHk@M AEDt@O١@AED"@QAEE1Q@K*AEF(@VhAEFxW@LI AEG @LI AEG@VhAEH1a=@M AEHl@cAEIB@IAEIJ#@F{AEJSR@N AEJܐ@QAEKe3 @N AEK9@M AELvyh@ajAEL@RLAEM@FAENb@IAEN%@UAEO!T@IJAEOK@RdAEP2 @KyAEP:@QpAEQD5i@H[ AEQ@PAERU{ @PܠAERO@RLAESf@M 1 AESd@F{AETx5@JAEU @Oa@AEUN<@LI AEVk@CAEV@DAEW#7"@D#AEWQ@C4(AEX4}@M 1 AEX @LaAEYE7@M 1 AEYff@PAEZW @O١@AEZ߬@CAE[hOL@GkPAE[|@D#AE\y@BDXAE]8@gbAE] @K*AE^9@ATAE^"h@IAE_$@J:AE_h@Oa@AE`6 N@G8AE`}@CAEaGQ@GkPAEa4@KyAEbXc@IJAEb:@F{AEci@C4(AEcI@VtAEd{$ @P(ĠAEeP@BDXAEei@O١@AEf @LaAEf6@@dAEg&Se@RdAEg@D#AEh7@J:AEh@B@AEo'3@T#AEob@IJAEp9&@IAEp@>