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 = '00844192000' / Observation ID TARG_ID = '844192 ' / 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 = 551541118.99462 / Start time DATE-OBS= '2018-06-24T13:51:59.0' / Start Date TSTOP = 551541224.6051 / Stop time DATE-END= '2018-06-24T13:53:44.6' / 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 = '2018-06-24T13:53:42' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -21.15714 / UTCF at TSTART CHECKSUM= 'iHeQiGbNiGbNiGbN' / HDU checksum updated 2018-06-24T13:53:42 DATASUM = ' 0' / data unit checksum updated 2018-06-24T13:53:42 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 = '00844192000' / Observation ID TARG_ID = '844192 ' / 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 = '2018-06-24T13:53:42' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 551541118.99462 / Start time DATE-OBS= '2018-06-24T13:51:59.0' / Start Date TSTOP = 551541224.6051 / Stop time DATE-END= '2018-06-24T13:53:44.6' / Stop Date UTCFINIT= -21.15714 / 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 = 844192 / Trigger Number XRA_OBJ = 318.092193603516 / [deg] XRT RA location GRB or Object XDEC_OBJ= -2.32069516181946 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.610480070114 / 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= -21.15714 / [s] UTC Correction TIME UTCCSEC = -22 / UTC Correction Seconds UTCCSUBS= 42143 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 551541224.64802 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 551541224 / ccsds PacKeT SEConds PKTSUBS = 32401 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'YUOnbSMlZSMlaSMl' / HDU checksum updated 2018-06-24T13:53:42 DATASUM = '813751880' / data unit checksum updated 2018-06-24T13:53:42 END AoOAo쿶&AoR@[yAo+@JAo@HAo;@D#Ao!j@IJAoª@P(ĠAo3$@W/\AoûP@?١@AoDi@QAo @BDXAoU6@DAoSe@S4(AofE@6{Aot@= 1 Aox;@2@Ao@YAoȉZ@JAo#@BDXAoɚ@9JAo#j@@IJAoʬ @<aAo4O@6{Ao˽R~@= AoE@1pAoΘ@W8AoW;d@/١@Ao@{Aoh@<aAo$J@g/\Aoyz@0ܠAoiY@P(ĠAoЋ @ Ao@,aAoќR@> Ao$@"@Aoҭ@T_Ao6;%@0ܠAoӾU@8[ AoG@@dAo#d@7kPAoXƓ@F{Aoi@[fAoj @cpAoy@b@Ao{R@gMVAo0@laAo،_@nq Ao:@q Aoٝn@k*Ao&@lVU Aoگ#@g/\Ao7@k Aoh@m AoI @r@Aoѯ:@s4(AoZRi@u|Ao@u^Aokx@sAo:@u1Ao|@u^Ao@zAo"@vAo@uǤAoiD@sAo( t@sAoⰮ@uǤAo9Q@vqAo@spAoJ@r=Ao;@q|Ao[ݘ@qsAo@t#Aom#O@oa@Ao~@qyAo~i@l= Ao @l= Ao菮@q6AoQ@n5 Ao@iAo)@k Ao:*@laAo:Y@f?AoÀ@f{AoL#@emAoŗ@emAo]h@c4(Ao @apAon%@a|AoQ@dAo4@`Aoc@bbRAo:@_@Ao@gbAo@ajAo+"@dAo@cAo