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 = '00753110000' / Observation ID TARG_ID = '753110 ' / 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 = 516631865.3935 / Start time DATE-OBS= '2017-05-16T12:51:05.4' / Start Date TSTOP = 516632019.64916 / Stop time DATE-END= '2017-05-16T12:53:39.6' / 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 = '2017-05-16T12:53:31' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -19.06868 / UTCF at TSTART CHECKSUM= 'eJdReJdOeJdOeJdO' / HDU checksum updated 2017-05-16T12:53:31 DATASUM = ' 0' / data unit checksum updated 2017-05-16T12:53:31 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 = '00753110000' / Observation ID TARG_ID = '753110 ' / 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 = '2017-05-16T12:53:31' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 516631865.3935 / Start time DATE-OBS= '2017-05-16T12:51:05.4' / Start Date TSTOP = 516632019.64916 / Stop time DATE-END= '2017-05-16T12:53:39.6' / Stop Date UTCFINIT= -19.06868 / 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 = 753110 / Trigger Number XRA_OBJ = 41.6271705627441 / [deg] XRT RA location GRB or Object XDEC_OBJ= -55.8752365112305 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 154.255660057068 / TSTOP - TSTART ONTIME = 151.993392944336 / Time on target LIVETIME= 151.993392944336 / Ontime multiplied by DEADC EXPOSURE= 151.993392944336 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -19.06868 / [s] UTC Correction TIME UTCCSEC = -20 / UTC Correction Seconds UTCCSUBS= 46566 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 516632021.53728 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 516632021 / ccsds PacKeT SEConds PKTSUBS = 26864 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'hefcjecZhecahecY' / HDU checksum updated 2017-05-16T12:53:31 DATASUM = '4263634158' / data unit checksum updated 2017-05-16T12:53:31 END A-9djA-9jA-:\#@\VU A-;mj@^ A-<~u@3A-=@;*A->;@::A-?A@= 1 A-@P@&{A-A @"@A-BT @ A-Ck@,aA-E@/١@A-F'(@5A-G+j@"@A-H@_% A-Kpb@,aA-L@<aA-M@P(ĠA-NV.@$A-O=@,aA-P@ A-Q'@7kPA-RnY@  A-S@([ A-U @BDXA-V@%@?١@A-W.4@"@A-X?˒@9JA-YQ@@dA-ZbXO@B@A-[s@@dA-\@:A-]*@F{A-^pz@ A-_@0ܠA-`@&{A-aBF@*:A-b숤@&{A-cͳ@C4(A-e@@A-f Zq@@ܠA-g1@CA-hB@{A-iT,=@] 1 A-jeqL@{A-kv@([ A-l @&{A-mDg@  A-n@<aA-o$@{A-p3@;*A-q[B@BDXA-r@5A-t@:A-u.^@$A-v#t@@A-w4@SpA-xF*@= A-yWE9@{A-zh@$A-{y@$A-|U@ApA-}^@  A-~@{A-!@{A-0? 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