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 = '00848048000' / Observation ID TARG_ID = '848048 ' / 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 = 553375108.39304 / Start time DATE-OBS= '2018-07-15T19:18:28.4' / Start Date TSTOP = 553375356.83066 / Stop time DATE-END= '2018-07-15T19:22:36.8' / 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 = '2018-07-15T19:37:17' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -21.26912 / UTCF at TSTART CHECKSUM= 'UGfKaFZHXFdHaFZH' / HDU checksum updated 2018-07-15T19:37:17 DATASUM = ' 0' / data unit checksum updated 2018-07-15T19:37:17 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 = '00848048000' / Observation ID TARG_ID = '848048 ' / 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 = '2018-07-15T19:37:17' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 553375108.39304 / Start time DATE-OBS= '2018-07-15T19:18:28.4' / Start Date TSTOP = 553375356.83066 / Stop time DATE-END= '2018-07-15T19:22:36.8' / Stop Date UTCFINIT= -21.26912 / 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 = 848048 / Trigger Number XRA_OBJ = 235.028823852539 / [deg] XRT RA location GRB or Object XDEC_OBJ= -0.902149379253387 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 248.437620043755 / TSTOP - TSTART ONTIME = 245.275268554688 / Time on target LIVETIME= 245.275268554688 / Ontime multiplied by DEADC EXPOSURE= 245.275268554688 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -21.26912 / [s] UTC Correction TIME UTCCSEC = -22 / UTC Correction Seconds UTCCSUBS= 36544 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 553375356.92484 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 553375356 / ccsds PacKeT SEConds PKTSUBS = 46242 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'ZA5hd03eZ73eb73e' / HDU checksum updated 2018-07-15T19:37:17 DATASUM = '1371392744' / data unit checksum updated 2018-07-15T19:37:17 END A}2O"A}p@T_A}=2@&{A}ÁaA}*o@+!@A}SL@2ɀA}Ȕ @0G A}@.OA}@.OA}Vf@,UA}͗C@/A}غ@-A}@-A}Z@/& A}қ@+ A}y@*RA}in@0G A}^Y@.OA}ןI@.OA}9@/& A}!)@-A}be@,UA}ܣ B@/A}@-A}$@.OA}e@+!@A}ȴ@0Z- A}縑@0Z- A}(m@.OA}i@,UA}檈@0Z- A}x@.OA},h@/A}mXd@1&a@A}H@+!@A}8@*RA}0(@)A}q~@/& A}[@/A}8@/& A}3@/& A}t@/A}@/& A}@,UA}7@/A}xc@-A}@1{@A}w@1&a@A};g@2XA}|W~@+!@A}GZ@/& A}7@-A}?'@/A}@0G A}@0G A}@0Z- A}B@0Z- A} @.OA} @,UA} @0Z- A} F@0Z- A} }@/& A}ȆY@0Z- A} v@0Z- A}Jf@/& A}V@.OA}Ft@0Z- A} 5@-A}N%@/A} @.OA}@.OA}@+ A}Q@.OA}|@+!@A}@/& A}@1&a@A} U@0Z- A}!@0Z- A}"ׅs@1{@A}$uO@.OA}%Ye,@-A}&U@/& A}'D@/& A})4@/A}*]$@1{@A}+{@1{@A},@3$A}.@-A}/`@0Z- A}0ԕ@/& A}1r@0Z- A}3#@,UA}4d+@1`A}5@.OA}6@0Z- A}8's@0Z- A}9hc@1&a@A}:T"@1&a@A};C@)A}=+3@1{@