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 = '00831888000' / Observation ID TARG_ID = '831888 ' / 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 = 547716848.20994 / Start time DATE-OBS= '2018-05-11T07:34:08.2' / Start Date TSTOP = 547717094.74716 / Stop time DATE-END= '2018-05-11T07:38:14.7' / 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 = '2018-05-11T07:38:10' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -20.92472 / UTCF at TSTART CHECKSUM= 'aJfKcHZHaHfHaHZH' / HDU checksum updated 2018-05-11T07:38:10 DATASUM = ' 0' / data unit checksum updated 2018-05-11T07:38:10 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 = '00831888000' / Observation ID TARG_ID = '831888 ' / 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 = '2018-05-11T07:38:10' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 547716848.20994 / Start time DATE-OBS= '2018-05-11T07:34:08.2' / Start Date TSTOP = 547717094.74716 / Stop time DATE-END= '2018-05-11T07:38:14.7' / Stop Date UTCFINIT= -20.92472 / 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 = 831888 / Trigger Number XRA_OBJ = 214.674057006836 / [deg] XRT RA location GRB or Object XDEC_OBJ= -62.3620071411133 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 246.537220001221 / TSTOP - TSTART ONTIME = 244.140426635742 / Time on target LIVETIME= 244.140426635742 / Ontime multiplied by DEADC EXPOSURE= 244.140426635742 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -20.92472 / [s] UTC Correction TIME UTCCSEC = -21 / UTC Correction Seconds UTCCSUBS= 3764 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 547717094.84716 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 547717094 / ccsds PacKeT SEConds PKTSUBS = 42358 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'FX7EGX5BFX5BFX5B' / HDU checksum updated 2018-05-11T07:38:10 DATASUM = '571103611' / data unit checksum updated 2018-05-11T07:38:10 END ARxPARxQpARx@k ARy@*:ARyYAR|H|@GT`AR}k@B֠AR~[@E AR Ks@E#fARL;O@CWAR*@E#fARa@G!`AR @C$ARO@E AR@E AR@DW1ARɰ@DKARS@C AR@C$ARՙF@E AR{@CARWxW@DYARh4@DKARX@D$$ARGE@B֠AR[7"@E#fAR&@DW1AR@EVsAR@B֠AR^@DKARq@C ARզ@BɀAR!ł@CARb_@DKAR<@C$AR@CWAR%@DW1ARft@E#fARd@B֠ARS@CAR)C@BARj2@C$AR#y@BARU@C AR-2@CWARmg@C$ARC@BXAR @CWAR0U@D$$ARq@DW1AR@D>AR@BAR4@BɀARup@CAR`@CWARO@CWAR8?@CARy0@CWARK@BɀAR(@BAR;@BXAR|9@CARý@DYAR@CAR?'@B֠ARǀ@CAR@CWARe@BɀARC|@C AR̄lv@B֠AR\S@BɀARK@BXARG;d@CARш+A@D$$AR@CWAR @C ARJ@CAR֋ @BAR@B%`AR @C$ARN@B%`ARۏ@CARЙ[@D>AR7@B%`ARRxl@BARhI@C$ARX%@CWARGZ@BɀARV77@BɀAR'@BAR@BXAR@A`ARY@CWAR@B֠ARջ@B֠ARŗ@BXAR]@B֠AR@CWARߔ@BXAR b@CW