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 = '00881709000' / Observation ID TARG_ID = '881709 ' / 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 = 568242351.993 / Start time DATE-OBS= '2019-01-03T21:05:52.0' / Start Date TSTOP = 568242457.54434 / Stop time DATE-END= '2019-01-03T21:07:37.5' / 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 = '2019-01-03T21:07:21' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -22.19042 / UTCF at TSTART CHECKSUM= 'mMkLmLjJmLjJmLjJ' / HDU checksum updated 2019-01-03T21:07:21 DATASUM = ' 0' / data unit checksum updated 2019-01-03T21:07:21 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 = '00881709000' / Observation ID TARG_ID = '881709 ' / 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 = '2019-01-03T21:07:21' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 568242351.993 / Start time DATE-OBS= '2019-01-03T21:05:52.0' / Start Date TSTOP = 568242457.54434 / Stop time DATE-END= '2019-01-03T21:07:37.5' / Stop Date UTCFINIT= -22.19042 / 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 = 881709 / Trigger Number XRA_OBJ = 212.580657958984 / [deg] XRT RA location GRB or Object XDEC_OBJ= 35.2587928771973 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.55133998394 / 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= -22.19042 / [s] UTC Correction TIME UTCCSEC = -23 / UTC Correction Seconds UTCCSUBS= 40479 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 568242457.64496 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 568242457 / ccsds PacKeT SEConds PKTSUBS = 32248 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'mUkAoTj4mTj9mTj9' / HDU checksum updated 2019-01-03T21:07:21 DATASUM = '285649401' / data unit checksum updated 2019-01-03T21:07:21 END AXWAXX5AXXwY@bFAXY.@] AXY@] AXZs@`ܠAXZ@UAX["@^ AX[\}@RdAX\3@F{AX\4@RLAX]EEc@PdAX]@PܠAX^V@T_AX^-@SpAX_g@EAX_t@Nq AX`y@= 1 AXa@H[ AXa\>@C4(AXbm@ATAXb@BDXAXc$E$@<aAXc@FAXd5@QTAXd. @3AXeFБ@D#AXes@> AXfXH@LI AXfx@M AXgi[@R@AXg.@BDXAXhz^@LI AXiD@GkPAXi@<aAXj@> AXj-@B@AXk%S@LI AXks@EAXl7 @B@AXl9@DAXmH\h@N AXm@C4(AXnY@H[ AXnD@R@AXoj@FhAXo@FhAXp|-@HAXq@F{AXqsC@HAXrr@HAXr@H[ AXs'[@BDXAXs@CAXt8@IAXtE@<aAXuI@FAXuҊ@FhAXv[-M@M AXv}@O١@AXwls@R@AXw@QAXx}@ZAXy[@cAXy@W/\AXz@X[ AXzD(@cR"AX{(X@YAX{@RDXAX|:-@UǤAX|ϖ@T_AX}Kr@M AX}@UAX~\$@UAX~\S@JAXm3@avAXb@QAXD@IJAX@RDXAX@IJAX,@RdAX@JAX*s.@@dAX]@K*AX;=@B@AX[l@ATAXL@FhAXա@IAX^DR@PdAX@XAXo @PAX-8@EAXh@8[ AX rG@WDAXw@8[ AX@J:AX[@UAX+]@9JAX@([ AX=D@B@