SIMPLE  =                    T / file does conform to FITS standard             BITPIX  =                   16 / 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 END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             XTENSION= 'BINTABLE'           / binary table extension                         BITPIX  =                    8 / 8-bit bytes                                    NAXIS   =                    2 / 2-dimensional binary table                     NAXIS1  =                   16 / width of table in bytes                        NAXIS2  =                   33 / number of rows in table                        PCOUNT  =                    0 / size of special data area                      GCOUNT  =                    1 / one data group (required keyword)              TFIELDS =                    2 / number of fields in each row                   TTYPE1  = 'START   '           / GTI start time                                 TFORM1  = 'D       '           / data format of field: 8-byte DOUBLE            TUNIT1  = 's       '           / physical unit of field                         TTYPE2  = 'STOP    '           / GTI stop  time                                 TFORM2  = 'D       '           / data format of field: 8-byte DOUBLE            TUNIT2  = 's       '           / physical unit of field                         EXTNAME = 'STDGTI  '           / name of this binary table extension            HDUCLASS= 'OGIP    '           / Conforms to OGIP/GSFC standards                HDUCLAS1= 'GTI     '           / Contains good time intervals                   HDUCLAS2= 'STANDARD'           / Contains standard good time intervals          HDUVERS = '1.0.0   '           / Version of GTI header                          TIMEZERO=                   0. / Zero-point offset for TIME column              MJDREF  = 5.191000074287037E+04 / MJD Epoch of TIME = 0                         TSTART  =           618420316. / Start time of GTI                              TSTOP   =         618421518.16 / Stop  time of GTI                              T90DUR  =     38.6879999637604 / [s] Burst T90 duration measure                 T90ERR  =     1.00406367133862 / [s] Crude T90DUR error estimate                T50DUR  =     14.5559998750687 / [s] Burst T50 duration measure                 T50ERR  =    0.331445312419436 / [s] Crude T50DUR error estimate                TPEAK   =        618420578.072 / [s] MET center of peak interval (GTI_PEAK)     TBKG1   =        618420435.598 / [s] MET center of first background interval    BKGRATE1=  0.00105951481238591 / [count/s] Estimated background rate (1st)      TBKG2   =        618421067.398 / [s] MET center of second background interval   BKGRATE2= 0.000363719745902551 / [count/s] Estimated background rate (2nd)      TOTDUR  =     61.4400000572205 / [s] Duration of GRB (for data selection)       TOTSTART=        618420555.196 / [s] Start of GRB (for data selection)          TOTSTOP =        618420616.636 / [s] Stop of GRB (for data selection)           BACKAPP =                    T / Background subtraction applied?                CNTFLU  =     22.6325015120395 / [count] Total counts fluence                   HISTORY                                                                         HISTORY START PARAMETER list for battblocks_1.18 at 2020-09-10T02:54:35         HISTORY                                                                         HISTORY P1 infile = /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reHISTORY P1 proc/trigger987016/00987016000-results/lc/sw00987016000b_bb_4ms.lc   HISTORY P2 outfile = /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_rHISTORY P2 eproc/trigger987016/00987016000-results/gti/sw00987016000b_bb_4ms.gtiHISTORY P3 durfile = /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_rHISTORY P3 eproc/trigger987016/00987016000-results/gti/sw00987016000b_bbdur_4ms.HISTORY P3 gti                                                                  HISTORY P4 nspill = 128                                                         HISTORY P5 timedel = 100e-6                                                     HISTORY P6 ncp_prior = 6.0                                                      HISTORY P7 gaussian = INDEF                                                     HISTORY P8 txx = 0                                                              HISTORY P9 tlookback = 10                                                       HISTORY P10 tpeak = 1                                                           HISTORY P11 bkgsub = YES                                                        HISTORY P12 burst_tstart = INDEF                                                HISTORY P13 burst_tstop = INDEF                                                 HISTORY P14 coalescefrac = 0.05                                                 HISTORY P15 timecol = TIME                                                      HISTORY P16 countscol = RATE                                                    HISTORY P17 errcol = ERROR                                                      HISTORY P18 expocol = INDEF                                                     HISTORY P19 hduclas3 = RATE                                                     HISTORY P20 durerrmeth = TOTVAR                                                 HISTORY P21 diagfile = NONE                                                     HISTORY P22 breakfile = NONE                                                    HISTORY P23 global_tstart = INDEF                                               HISTORY P24 global_tstop = INDEF                                                HISTORY P25 clobber = yes                                                       HISTORY P26 chatter = 2                                                         HISTORY P27 history = YES                                                       HISTORY P28 mode = ql                                                           HISTORY END PARAMETER list for battblocks_1.18                                  HISTORY                                                                         END                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               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