Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done using the HEASARC data.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
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BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.47
Process Start Time: Mon May 18 14:45:32 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger956824
======================================================================
Trigger: 00956824 Segment: 000
BAT Trigger Time: 603552778.304 [s; MET]
Trigger Stop: 603552778.816 [s; MET]
UTC: 2020-02-16T13:32:33.858540 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 160.460729941118 Dec: 19.4541045214607 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.23
Image Trigger?: NO
Rate S/N Ratio: 15.1657508881031 [ if not an image trigger ]
Image S/N Ratio: 8.23
Analysis Position: [ source = BAT ]
RA: 160.460729941118 Dec: 19.4541045214607 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 160.454200385875 Dec: 19.4711343785963 [deg; J2000]
{ 10h 41m 49.0s , +19d 28' 16.1" }
+/- 0.930348304476157 [arcmin] (estimated 90% radius based on SNR)
+/- 0.254245413202635 [arcmin] (formal 1-sigma fit error)
SNR: 33.721774674736
Angular difference between the analysis and refined position is 1.086510 arcmin
Partial Coding Fraction: 0.84375 [ including projection effects ]
Duration
T90: 67.4479998350143 +/- 6.56804386229279
Measured from: 0.48800003528595
to: 67.9359998703003 [s; relative to TRIGTIME]
T50: 38.1959999799728 +/- 5.19073182678569
Measured from: 4.04799997806549
to: 42.2439999580383 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.80400002002716
to: 3.80400002002716 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.720000028610229
to: 79.7200000286102 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.964773 1.285195 0.662680 0.083340
0.052608 0.054789 0.046636 0.039026 [error]
Peak 0.039480 0.075597 0.064275 0.013460
0.006655 0.007643 0.006608 0.004939 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 80.440 -0.720 79.720
T90 67.448 0.488 67.936
T50 38.196 4.048 42.244
Peak 1.000 2.804 3.804
====== 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: CPL)
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 -1.850 -0.098 0.096 - - - 2.29e-03 -1.41e-04 1.40e-04 71.150 57
CPL -0.658 -0.469 0.527 49.722 -5.040 7.234 1.03e-02 -4.58e-03 9.73e-03 49.010 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: CPL)
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 -1.350 -0.174 0.174 - - - 1.27e-02 -1.42e-03 1.41e-03 59.380 57
CPL -0.118 -0.819 0.997 77.718 -15.673 54.189 5.26e-02 -3.17e-02 1.06e-01 52.300 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 3.28e-07 4.87e-07 5.40e-07 1.13e-06 1.70e-06 2.48e-06 erg/cm2
90%_error_low -2.68e-08 -2.63e-08 -4.46e-08 -1.79e-07 -1.04e-07 -2.25e-07 erg/cm2
90%_error_hi 2.73e-08 2.64e-08 4.49e-08 2.00e-07 1.05e-07 2.41e-07 erg/cm2
Peak flux PL 4.54e-01 5.00e-01 3.92e-01 5.07e-01 1.54e+00 1.85e+00 ph/cm2/s
90%_error_low -8.25e-02 -6.02e-02 -5.18e-02 -1.22e-01 -1.72e-01 -2.10e-01 ph/cm2/s
90%_error_hi 8.65e-02 5.97e-02 5.14e-02 1.42e-01 1.72e-01 2.12e-01 ph/cm2/s
Fluence CPL 2.83e-07 5.50e-07 5.29e-07 2.33e-07 1.53e-06 1.59e-06 erg/cm2
90%_error_low -3.17e-08 -3.56e-08 -5.44e-08 -9.81e-08 -1.14e-07 -1.50e-07 erg/cm2
90%_error_hi 3.20e-08 3.63e-08 5.30e-08 1.66e-07 1.18e-07 1.97e-07 erg/cm2
Peak flux CPL 3.63e-01 5.61e-01 4.38e-01 1.71e-01 1.48e+00 1.53e+00 ph/cm2/s
90%_error_low -9.95e-02 -7.50e-02 -6.29e-02 -8.60e-02 -1.76e-01 -1.98e-01 ph/cm2/s
90%_error_hi 1.04e-01 7.76e-02 6.45e-02 1.67e-01 1.76e-01 2.23e-01 ph/cm2/s
======================================================================
Special notes of this burst