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 v2.48
Process Start Time: Fri Sep 29 23:46:08 EDT 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1173731
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Trigger: 01173731 Segment: 000
BAT Trigger Time: 707703308.736 [s; MET]
Trigger Stop: 707703310.784 [s; MET]
UTC: 2023-06-06T00:14:37.322360 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 166.816687835473 Dec: 36.4846778033881 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.88
Image Trigger?: NO
Rate S/N Ratio: 9.59166304662544 [ if not an image trigger ]
Image S/N Ratio: 7.88
Analysis Position: [ source = BAT ]
RA: 166.816687835473 Dec: 36.4846778033881 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 166.776906637782 Dec: 36.5037979692158 [deg; J2000]
{ 11h 07m 06.5s , +36d 30' 13.7" }
+/- 2.46745048146596 [arcmin] (estimated 90% radius based on SNR)
+/- 1.0679767706449 [arcmin] (formal 1-sigma fit error)
SNR: 8.37073238382393
Angular difference between the analysis and refined position is 2.235634 arcmin
Partial Coding Fraction: 0.1523438 [ including projection effects ]
Duration
T90: 16.2560000419617 +/- 1.30701494300898
Measured from: 0.0880000591278076
to: 16.3440001010895 [s; relative to TRIGTIME]
T50: 13.0080000162125 +/- 10.3557952505818
Measured from: 1.49600005149841
to: 14.5040000677109 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.924000024795532
to: 1.92400002479553 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.263999938964844
to: 16.9680000543594 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.306375 0.483378 0.552017 0.172361
0.085266 0.091446 0.085416 0.080158 [error]
Peak 0.044864 0.101783 0.139296 0.033223
0.021240 0.023325 0.021975 0.020292 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 17.232 -0.264 16.968
T90 16.256 0.088 16.344
T50 13.008 1.496 14.504
Peak 1.000 0.924 1.924
====== 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 -1.177 -0.298 0.311 - - - 6.93e-03 -1.18e-03 1.17e-03 34.380 57
CPL -0.964 -4.329 0.950 287.272 N/A N/A 8.58e-03 N/A N/A 34.420 56
=== 1-s peak 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 -1.296 -0.353 0.355 - - - 2.25e-02 -4.90e-03 4.90e-03 67.030 57
CPL 1.643 -2.252 4.835 73.655 -13.928 47.539 3.68e-01 -3.68e-01 1.84e+01 61.300 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 1.13e-07 2.53e-07 4.47e-07 1.86e-06 1.22e-06 2.67e-06 erg/cm2
90%_error_low -3.74e-08 -5.39e-08 -8.31e-08 -6.84e-07 -2.12e-07 -7.38e-07 erg/cm2
90%_error_hi 4.23e-08 5.23e-08 8.14e-08 9.24e-07 2.12e-07 9.35e-07 erg/cm2
Peak flux PL 7.62e-01 8.66e-01 7.06e-01 9.60e-01 2.69e+00 3.29e+00 ph/cm2/s
90%_error_low -2.86e-01 -2.25e-01 -1.70e-01 -4.00e-01 -6.15e-01 -7.18e-01 ph/cm2/s
90%_error_hi 3.35e-01 2.23e-01 1.68e-01 5.33e-01 6.24e-01 7.24e-01 ph/cm2/s
Fluence CPL 1.11e-07 2.53e-07 4.50e-07 1.73e-06 1.22e-06 2.51e-06 erg/cm2
90%_error_low -5.09e-08 -5.36e-08 -8.48e-08 -1.30e-06 -2.20e-07 -1.28e-06 erg/cm2
90%_error_hi 3.10e-08 5.70e-08 1.08e-07 6.12e-07 2.14e-07 1.03e-06 erg/cm2
Peak flux CPL 2.98e-01 8.69e-01 9.15e-01 2.26e-01 2.27e+00 2.31e+00 ph/cm2/s
90%_error_low -2.98e-01 -3.60e-01 -2.37e-01 -2.26e-01 -6.70e-01 -6.99e-01 ph/cm2/s
90%_error_hi 4.35e-01 2.93e-01 2.56e-01 4.00e-01 6.96e-01 7.96e-01 ph/cm2/s
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