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 = '01100848000' / Observation ID TARG_ID = '1100848 ' / 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 = 670564616.20956 / Start time DATE-OBS= '2022-04-02T03:56:56.2' / Start Date TSTOP = 670564856.96068 / Stop time DATE-END= '2022-04-02T04:00:57.0' / 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 = '2022-04-02T04:01:12' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -28.88874 / UTCF at TSTART CHECKSUM= 'gIhVhGZUgGfUgGZU' / HDU checksum updated 2022-04-02T04:01:12 DATASUM = ' 0' / data unit checksum updated 2022-04-02T04:01:12 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 = '01100848000' / Observation ID TARG_ID = '1100848 ' / 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 = '2022-04-02T04:01:12' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 670564616.20956 / Start time DATE-OBS= '2022-04-02T03:56:56.2' / Start Date TSTOP = 670564856.96068 / Stop time DATE-END= '2022-04-02T04:00:57.0' / Stop Date UTCFINIT= -28.88874 / 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 = 1100848 / Trigger Number XRA_OBJ = 30.676025390625 / [deg] XRT RA location GRB or Object XDEC_OBJ= -61.3530540466309 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 240.751119971275 / TSTOP - TSTART ONTIME = 238.381240844727 / Time on target LIVETIME= 238.381240844727 / Ontime multiplied by DEADC EXPOSURE= 238.381240844727 / Total exposure, with all known correction DEADC = 1. / dead time correction UTCCTIME= -28.88874 / [s] UTC Correction TIME UTCCSEC = -29 / UTC Correction Seconds UTCCSUBS= 5563 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 670564857.04482 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 670564857 / ccsds PacKeT SEConds PKTSUBS = 2241 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'e6Ime59le5Gle59l' / HDU checksum updated 2022-04-02T04:01:12 DATASUM = '2696409070' / data unit checksum updated 2022-04-02T04:01:12 END AAQAc @apA@:A@1pA0L@1pA5@0ܠAA@1pA4Ag@% Ax@/& Ahs@0G A*W@-AkG@.OA7a@/& A'=@0Z- A.@0G Ao@-A@,UA@*RA1֌@2ɀAri@/& A@0Z- Az@,UA5W@-Av@1`Au@/& Ae@5 A9Uq@/AzEN@+!@A5+@-A$_@1{@A=<@.OA~@-A@+!@A@+ A@Ӯ@/AË@+!@A³h@,UAD@0Z- ADy@/AV@/& Ar2@+!@Ab@0Z- AHQ@.OAA@0Z- A1@/& A !@0Z- AL^@+!@A@.OAo@*RAL@(PAO)@,UA@.OAѯ@/& Af@0Z- ASC@.OAƔ@/& Ao@+!@A_1@+ AWO@.OA˘>@1&a@A.@0G A@1&a@A[@0G AЛ]@0G A9@/& An@,UA^K@/A՟'@/A@-A!@/& Ab@+!@Aڣ|@-Alv@+!@A%\S@/AfK@/Aߧ< @1`A+@/& A)@0Z- Aj @/A@1{@A[@2XA,8@1&a@Am@/& A鮺I@1{@A&@0Z- A0@/Aq@/Ay@7!`Ai@2ɀA4Yu@.OAuIR@.OA9.@-A(c@/A8@@-Ay@,UA@.OA}@.OA;Z@.O