====================================================================== BAT GRB EVENT DATA PROCESSING REPORT Process Script Ver: batgrbproduct v2.48 Process Start Time: Mon Nov 16 14:49:29 EST 2020 Host Name: bat1 Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger982201 ====================================================================== Trigger: 00982201 Segment: 000 BAT Trigger Time: 616333400 [s; MET] Trigger Stop: 616333464 [s; MET] UTC: 2020-07-13T11:42:54.723580 [includes UTCF correction] Where From?: TDRSS position message BAT RA: 76.9619372814151 Dec: -32.8252812192549 [deg; J2000] Catalogged Source?: NO Point Source?: YES GRB Indicated?: YES [ by BAT flight software ] Image S/N Ratio: 7.86 Image Trigger?: YES Rate S/N Ratio: 0 [ if not an image trigger ] Image S/N Ratio: 7.86 Analysis Position: [ source = BAT ] RA: 76.9619372814151 Dec: -32.8252812192549 [deg; J2000] Refined Position: [ source = BAT pre-slew burst ] RA: 76.9329050179147 Dec: -32.841228625877 [deg; J2000] { 05h 07m 43.9s , -32d 50' 28.4" } +/- 2.74733342335603 [arcmin] (estimated 90% radius based on SNR) +/- 1.59812657370425 [arcmin] (formal 1-sigma fit error) SNR: 7.17963122286438 Angular difference between the analysis and refined position is 1.748676 arcmin Partial Coding Fraction: 0.4648438 [ including projection effects ] Duration T90: 41.972000002861 +/- 7.98674435078993 Measured from: 21.1399999856949 to: 63.1119999885559 [s; relative to TRIGTIME] T50: 20.7480000257492 +/- 9.16834908057172 Measured from: 32.2519999742508 to: 53 [s; relative to TRIGTIME] Fluence Peak Flux (peak 1 second) Measured from: 49.9359999895096 to: 50.9359999895096 [s; relative to TRIGTIME] Total Fluence Measured from: 18.4479999542236 to: 65.9800000190735 [s; relative to TRIGTIME] Band 1 Band 2 Band 3 Band 4 15-25 25-50 50-100 100-350 keV Total 0.619338 0.661064 0.211871 0.019283 0.079062 0.082224 0.074164 0.074768 [error] Peak 0.030504 0.027028 0.026173 0.018690 0.011932 0.011876 0.010932 0.011007 [error] [ fluence units of on-axis counts / fully illuminated detector ] ====================================================================== ====== Table of the duration information ============================= Value tstart tstop T100 47.532 18.448 65.980 T90 41.972 21.140 63.112 T50 20.748 32.252 53.000 Peak 1.000 49.936 50.936 ====== Spectral Analysis Summary ===================================== Model : spectral model: simple power-law (PL) and cutoff power-law (CPL) Ph_index : photon index: E^{Ph_index} Ph_90err : 90% error of the photon index Epeak : Epeak in keV Epeak_90err: 90% error of Epeak Norm : normalization at 50 keV in both the PL model and CPL model Nomr_90err : 90% error of the normalization chi2 : Chi-Squared dof : degree of freedo === Time-averaged spectral analysis === (Best model with acceptable fit: PL) Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof PL -2.475 -0.340 0.299 - - - 1.71e-03 -4.13e-04 4.08e-04 42.810 57 CPL -1.251 -0.746 2.255 21.530 -18.929 11.323 1.03e-02 -1.03e-02 3.15e-01 40.950 56 === 1-s peak spectral analysis === (Best model with acceptable fit: N/A) Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof PL -1.628 -0.939 0.813 - - - 5.98e-03 -2.76e-03 2.44e-03 44.710 57 CPL -1.659 -3.092 1.815 9999.360 N/A N/A 5.89e-03 N/A N/A 44.720 56 === Fluence/Peak Flux Summary === Model Band1 Band2 Band3 Band4 Band5 Total 15-25 25-50 50-100 100-350 15-150 15-350 keV Fluence PL 2.62e-07 2.67e-07 1.92e-07 2.21e-07 8.08e-07 9.43e-07 erg/cm2 90%_error_low -4.64e-08 -4.43e-08 -6.02e-08 -1.09e-07 -1.43e-07 -2.06e-07 erg/cm2 90%_error_hi 4.73e-08 4.31e-08 6.59e-08 1.65e-07 1.50e-07 2.47e-07 erg/cm2 Peak flux PL 2.78e-01 2.60e-01 1.68e-01 1.68e-01 7.75e-01 8.73e-01 ph/cm2/s 90%_error_low -1.75e-01 -1.13e-01 -1.68e-01 -1.68e-01 -3.11e-01 -3.42e-01 ph/cm2/s 90%_error_hi 2.16e-01 1.06e-01 8.95e-02 2.85e-01 3.12e-01 3.45e-01 ph/cm2/s Fluence CPL 2.49e-07 3.00e-07 1.52e-07 2.76e-08 7.25e-07 7.29e-07 erg/cm2 90%_error_low -5.16e-08 -5.73e-08 -8.58e-08 -2.65e-08 -1.42e-07 -1.46e-07 erg/cm2 90%_error_hi 5.09e-08 6.24e-08 8.68e-08 2.21e-07 1.74e-07 2.58e-07 erg/cm2 Peak flux CPL 2.55e-01 1.91e-01 9.98e-02 8.83e-02 5.82e-01 6.34e-01 ph/cm2/s 90%_error_low -2.55e-01 -1.91e-01 -9.98e-02 -8.83e-02 -5.82e-01 -6.34e-01 ph/cm2/s 90%_error_hi 2.36e-01 1.61e-01 7.96e-02 6.28e-02 4.82e-01 5.14e-01 ph/cm2/s ======================================================================
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 76.9329 -32.8412 0.0268 43.6700 -174.1642 1.7990393 7.180 TRIG_00982201 Foreground time interval of the image: 18.448 65.980 (delta_t = 47.532 [sec]) Background time interval of the image: -11.699 18.448 (delta_t = 30.147 [sec])
Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.
Time interval is from 18.448 sec. to 65.980 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -2.47473 ( -0.340055 0.298945 ) Norm@50keV : 1.71061E-03 ( -0.00041329 0.000407989 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 42.81 using 59 bins. Reduced chi-squared = 0.751053 # Null hypothesis probability of 9.19e-01 with 57 degrees of freedom Photon flux (15-150 keV) in 47.53 sec: 0.330961 ( -0.047237 0.047228 ) ph/cm2/s Energy fluence (15-150 keV) : 8.07806e-07 ( -1.4324e-07 1.49913e-07 ) ergs/cm2
Time interval is from 18.448 sec. to 65.980 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.25114 ( -0.745727 2.25513 ) Epeak [keV] : 21.5296 ( -18.9323 11.3201 ) Norm@50keV : 1.02970E-02 ( -0.0103021 0.315025 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 40.95 using 59 bins. Reduced chi-squared = 0.73125 # Null hypothesis probability of 9.34e-01 with 56 degrees of freedom Photon flux (15-150 keV) in 47.53 sec: 0.319775 ( -0.048422 0.048897 ) ph/cm2/s Energy fluence (15-150 keV) : 7.24647e-07 ( -1.41635e-07 1.74453e-07 ) ergs/cm2
Time interval is from 49.936 sec. to 50.936 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.62775 ( -0.938474 0.813346 ) Norm@50keV : 5.97708E-03 ( -0.00276015 0.00244191 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 44.71 using 59 bins. Reduced chi-squared = 0.784386 # Null hypothesis probability of 8.81e-01 with 57 degrees of freedom Photon flux (15-150 keV) in 1 sec: 0.774879 ( -0.311265 0.312291 ) ph/cm2/s Energy fluence (15-150 keV) : 5.57237e-08 ( -2.48989e-08 2.5492e-08 ) ergs/cm2
Time interval is from 49.936 sec. to 50.936 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -4.1801 ( -0.610028 4.29731 ) Epeak [keV] : 498.736 ( ) Norm@50keV : 3.97153E-04 ( ) ------------------------------------------------------------ #Fit statistic : Chi-Squared 44.14 using 59 bins. Reduced chi-squared = 0.788214 # Null hypothesis probability of 8.74e-01 with 56 degrees of freedom Photon flux (15-150 keV) in 1 sec: 0.582443 ( -0.582443 0.482077 ) ph/cm2/s Energy fluence (15-150 keV) : 3.30491e-08 ( -3.25261e-08 2.18637e-07 ) ergs/cm2
T90 = 41.972 sec. Hardness ratio (energy fluence ratio) = 0.719664422074
S(15-50 keV) = 5.289962e-07 S(50-150 keV) = 2.7883007e-07
The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.
IMX = -9.496713393525639E-01, IMY = 9.706305275166674E-02
Time interval of the image: -11.699400 18.448000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 135.4196 -40.7497 0.0 6.8 73.3 -0.0744 -1.0 12.7 Vela X-1 170.0314 -60.5670 1572.0 35.8 76.1 0.0012 0.0 9.0 Cen X-3 83.4410 -64.4687 2.8 40.3 137.6 0.7672 4.1 ------ UNKNOWN 188.0014 -13.9100 2.6 55.9 11.5 2.1154 4.5 ------ UNKNOWN
Time interval of the image: 18.448000 65.980000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 135.6110 -40.3677 5.2 6.6 70.3 -0.3160 -2.2 11.8 Vela X-1 170.5543 -60.7146 5.6 36.1 76.1 0.7400 2.1 8.9 Cen X-3 116.2347 -55.2351 2.1 22.2 130.0 0.8942 5.4 ------ UNKNOWN 77.8598 -45.6201 2.2 40.4 167.3 1.2084 5.2 ------ UNKNOWN 76.9329 -32.8412 1.6 43.7 -174.2 1.7992 7.2 ------ UNKNOWN 87.2181 -5.1812 2.2 49.7 -134.3 3.7215 5.2 ------ UNKNOWN
Time interval of the image: 138.900600 496.300600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 135.6075 -40.5298 8.1 46.8 -10.3 1.0544 1.4 3.9 Vela X-1 38.0071 8.6343 2.6 55.6 -176.2 7.2447 4.4 ------ UNKNOWN 79.5099 12.8391 2.4 45.8 -123.9 7.5571 4.7 ------ UNKNOWN