SIMPLE = T / file does conform to FITS standard BITPIX = 16 / number of bits per data pixel NAXIS = 2 / number of data axes NAXIS1 = 51 / length of data axis 1 NAXIS2 = 51 / length of data axis 2 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 MESGNAME= 'XRT_IMAGE' / Name of the message KEYMISS = T / Expect missing keywords TELESCOP= 'SWIFT ' / Telescope (mission) name INSTRUME= 'XRT ' / Instrument name OBS_ID = '01220161000' / Observation ID TARG_ID = '1220161 ' / 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 = '2024-03-15T10:01:36' / file creation date (YYYY-MM-DDThh:mm:ss UT) TSTART = 732189238.86254 / Start time DATE-OBS= '2024-03-15T09:53:58.9' / Start Date TSTOP = 732189238.86254 / Stop time DATE-END= '2024-03-15T09:53:58.9' / Stop Date UTCFINIT= -33.08976 / UTCF at TSTART TRIGGER = 1220161 / Trigger Number FRAMENUM= 97311229 / CCD Frame Number HDUCLASS= 'OGIP ' / Format conforms to OGIP standards HDUCLAS1= 'IMAGE ' / Image data HDUCLAS2= 'TOTAL ' / Total data values DATAMODE= 'TDRSS_PS' / Instrument operating mode CTYPE1 = 'RAWX ' / WCS axis type CRPIX1 = 26 / WCS Reference point CDELT1 = 1 / WCS coordinate increment CUNIT1 = 'pixel ' / WCS axis unit CTYPE2 = 'RAWY ' / WCS axis type CRPIX2 = 26 / WCS Reference point CDELT2 = 1 / WCS coordinate increment CUNIT2 = 'pixel ' / WCS axis unit APID = 1250 / Application Process Identifier PACKET1 = T / Data from packet #1 present PACKET2 = F / Data from packet #2 present PACKET3 = F / Data from packet #3 present BLANK = -1 / Null data TELAPSE = 0. / TSTOP - TSTART ONTIME = 0. / Time on target LIVETIME= 0. / ONTIME multipled by DEADC EXPOSURE= 0. / Total exposure, with all known corrections DEADC = 1. / Dead time correction INVGAIN = 4 / Inverse gain (data were divided by this value) RAWXCTRD= -7790.015625 / [pixel] GRB RAWX coordinates CenTRoiD RAWYCTRD= -3.03701792042298E+29 / [pixel] GRB RAWY coordinates CenTRoiD XRA_OBJ = 242.181854248047 / [deg] XRT RA location of GRB or Object XDEC_OBJ= -15.3945598602295 / [deg] XRT DEC location of GRB or Object PA_PNT = 98.4870529174805 / [deg] Roll angle from North towards East RAWXCEN = 429 / RAWX CENter image CRVAL1 = 429 / WCS reference value RAWYCEN = 280 / RAWY CENter image CRVAL2 = 280 / WCS reference value STDVCTRD= 2.17852473820688E-20 / STandard DeViation of CenTRoiD MAXSTDV = 6448.5009765625 / MAX STandard DeViation of centroid EVTCTRD = 1747309290 / no. of EVenTs in the CenTRoiD window MINEVENT= 511230440 / MInimum No. of EVenTs required for centroid P2ITER = 18448 / Number of iterations for phase2 algorithm MAXITER = 63331 / MAX ITERation for phase2 algorithm CONVDIST= -3.93174782513596E+34 / actual CONVergence DISTance MAXCONV = -8.28494287321725E-38 / MAX CONVergence distance XRTMODE = 11 / XRT MODE for image WAVEFORM= 32 / XRT waveform P1UTCC = -33.08976 / [s] Packet #1 UTC Correction time P1UTCCS = -34 / Packet #1 UTC Correction Seconds P1UTCCSS= 45512 / [2*10**(-5) s] Packet #1 UTC Correction SubSecoPKT1TIME= 732189241.54374 / [s] ccsds PacKeT #1 TIME=PKT1SEC+PKT1SUBS*2e-5 PKT1SEC = 732189241 / ccsds PacKeT #1 SEConds PKT1SUBS= 27187 / [2*10**(-5) s] ccsds PacKeT #1 SUBSeconds DATAMISS= T / Expect missing data CHECKSUM= 'on2eom2Zom2dom2Z' / HDU checksum updated 2024-03-15T10:01:36 DATASUM = '3026302442' / data unit checksum updated 2024-03-15T10:01:36 END [\}kXZ?]{@Et+R8uOAOdBQK?$H_Z@,Ah7Gy]?!>e[6 _#}x@|Cr<>7O>ol6&6>s {Kx<!Xz^'<I](7.p{pt^x=pE p1_vb&,0@xp '/ C,o} | x<O {GD@;#p<>HM/ tx}'Lw_8N^N !;{0|VdsEZ..~@x^l+0>!A#P>3G Y>|x"ot x_~1 `{ w:?hhm.@/w <.? >|y/x`8[ ! ?@>O@ CM<|_ |.t'|r|}')-?!  rt$';C />>~>E