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 = '01044426000' / Observation ID TARG_ID = '1044426 ' / 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 = 640657767.8096 / Start time DATE-OBS= '2021-04-21T00:29:27.8' / Start Date TSTOP = 640657873.4296 / Stop time DATE-END= '2021-04-21T00:31:13.4' / 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 = '2021-04-21T00:30:52' / file creation date (YYYY-MM-DDThh:mm:ss UT) UTCFINIT= -26.88102 / UTCF at TSTART CHECKSUM= '4GdT6GcR4GcR4GcR' / HDU checksum updated 2021-04-21T00:30:52 DATASUM = ' 0' / data unit checksum updated 2021-04-21T00:30:52 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 = '01044426000' / Observation ID TARG_ID = '1044426 ' / 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 = '2021-04-21T00:30:52' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 640657767.8096 / Start time DATE-OBS= '2021-04-21T00:29:27.8' / Start Date TSTOP = 640657873.4296 / Stop time DATE-END= '2021-04-21T00:31:13.4' / Stop Date UTCFINIT= -26.88102 / 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 = 1044426 / Trigger Number XRA_OBJ = 104.885917663574 / [deg] XRT RA location GRB or Object XDEC_OBJ= 4.92543458938599 / [deg] XRT DEC location GRb or Object TERMMODE= 0 / XRT termination mode TELAPSE = 105.620000004768 / 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= -26.88102 / [s] UTC Correction TIME UTCCSEC = -27 / UTC Correction Seconds UTCCSUBS= 5949 / [2*10**(-5) s] UTC Correction SUBSeconds PKTTIME = 640657873.54158 / [s] ccsds PacKeT TIME=PKTSEC+PKTSUBS*2e-5 PKTSEC = 640657873 / ccsds PacKeT SEConds PKTSUBS = 27079 / [2*10**(-5) s] ccsds PacKeT SUBSeconds APID = 1253 / Application Process Identifier CHECKSUM= 'PYGcQWEZPWEbPWEZ' / HDU checksum updated 2021-04-21T00:30:52 DATASUM = '3902475412' / data unit checksum updated 2021-04-21T00:30:52 END AԳAԴxAԴh@uAԴo@rdAԵz0@rqOAԶ_@pAԶW@pAԷ@pAԷE@qAԸ%At@p띠AԸ@mF% AԹ6@o% AԹ+@l8[AԺG1@g>AԺqa@kfAԻY@iAԻ@kAԼjZG@h,AԼv@ksAԽ{@dAAԾC-@hAԾ\@cpAԿ@eAԿ,@bLA&B@e1Arq@lC A8@bDXA@dAAI[W@apA@b&^AZ@[mAD@b@Ak@] A@UǤA}-@V{A@X[ AƎt*@[mA@V{Aǟ@PA(]@SAȱ?@T_A9n@QTAE@R@AJ%@V?AӌT@P(ĠA\/@S4(A @M 1 Amu:@RdA@SpA~A@X,A^@RdAΐ@G8A'@C4(AϡHV@LI A)@EAв @`FA;1<@J:Ak@GkPALw@FhA"@Oa@A]Q@ATA`@B@Ao@M A@PܠAՀIf@ATA@::A֑@@dA2@H[ Aע|@JA+x@> Aش@SA< @0ܠAa@8[ AN@ApA֧@= A_K@ATAN@3Ap@VhA4@FhA݁4@BDXA zc@2@Aޓ@0ܠA@3Aߤc@FhA-!@FA൪P@([ A>L@<aA@5AO6@= 1 A6e@0ܠA`@1pA|@7kPArK@<aAz@H[ Ae@<aA 1@  A攫`@"@AN@6{A@EA.F@: