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 Oct 13 22:47:03 EDT 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1142847
======================================================================
Trigger: 01142847 Segment: 000
BAT Trigger Time: 691590336 [s; MET]
Trigger Stop: 691590400 [s; MET]
UTC: 2022-12-01T12:25:05.684420 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 266.933488910624 Dec: -68.2595112495696 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.65
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 15.65
Analysis Position: [ source = BAT ]
RA: 266.933488910624 Dec: -68.2595112495696 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 266.902237638968 Dec: -68.2297450175881 [deg; J2000]
{ 17h 47m 36.5s , -68d 13' 47.1" }
+/- 0.842356941330918 [arcmin] (estimated 90% radius based on SNR)
+/- 0.315855591279388 [arcmin] (formal 1-sigma fit error)
SNR: 38.8644421748075
Angular difference between the analysis and refined position is 1.916431 arcmin
Partial Coding Fraction: 0.515625 [ including projection effects ]
Duration
T90: 33.7199999094009 +/- 2.03901935339401
Measured from: -18.7599999904633
to: 14.9599999189377 [s; relative to TRIGTIME]
T50: 12.6920000314713 +/- 0.832742397966511
Measured from: -13.3200000524521
to: -0.628000020980835 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -13.5080000162125
to: -12.5080000162125 [s; relative to TRIGTIME]
Total Fluence
Measured from: -20.8839999437332
to: 22.9199999570847 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.691125 5.154171 3.648393 0.834620
0.098010 0.100579 0.085387 0.064809 [error]
Peak 0.240487 0.449703 0.518359 0.167044
0.018539 0.023060 0.023549 0.016920 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 43.804 -20.884 22.920
T90 33.720 -18.760 14.960
T50 12.692 -13.320 -0.628
Peak 1.000 -13.508 -12.508
====== 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: 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 -1.633 -0.048 0.048 - - - 2.09e-02 -5.30e-04 5.30e-04 79.990 57
CPL -1.389 -0.187 0.195 135.829 -37.396 238.168 2.71e-02 -4.79e-03 6.12e-03 74.990 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 -1.015 -0.085 0.086 - - - 9.65e-02 -4.96e-03 4.96e-03 58.170 57
CPL -0.629 -0.344 0.373 205.840 -73.634 793.272 1.44e-01 -4.19e-02 6.47e-02 54.480 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 1.32e-06 2.24e-06 2.90e-06 7.52e-06 8.53e-06 1.40e-05 erg/cm2
90%_error_low -6.61e-08 -6.56e-08 -9.07e-08 -5.21e-07 -2.22e-07 -5.73e-07 erg/cm2
90%_error_hi 6.74e-08 6.56e-08 9.04e-08 5.47e-07 2.23e-07 5.91e-07 erg/cm2
Peak flux PL 7.71e-04 1.11e-02 1.03e-01 1.10e+01 4.57e-01 1.09e+01 ph/cm2/s
90%_error_low N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_hi N/A N/A N/A N/A N/A N/A ph/cm2/s
Fluence CPL 1.25e-06 2.28e-06 2.95e-06 5.47e-06 8.40e-06 1.20e-05 erg/cm2
90%_error_low -8.46e-08 -7.11e-08 -1.01e-07 -1.14e-06 -2.47e-07 -1.16e-06 erg/cm2
90%_error_hi 8.62e-08 7.16e-08 1.02e-07 1.51e-06 2.46e-07 1.51e-06 erg/cm2
Peak flux CPL 2.27e+00 3.44e+00 3.50e+00 4.10e+00 1.10e+01 1.33e+01 ph/cm2/s
90%_error_low -3.17e-01 -2.31e-01 -2.38e-01 -1.11e+00 -5.93e-01 -1.25e+00 ph/cm2/s
90%_error_hi 3.27e-01 2.34e-01 2.41e-01 1.62e+00 5.93e-01 1.67e+00 ph/cm2/s
======================================================================
Special notes of this burst