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: Thu Jun 19 21:07:40 EDT 2025
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1299088
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Trigger: 01299088 Segment: 000
BAT Trigger Time: 764753440 [s; MET]
Trigger Stop: 764753528 [s; MET]
UTC: 2025-03-27T07:30:04.682040 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 248.197231340375 Dec: 61.5954132033376 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.75
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 8.75
Analysis Position: [ source = BAT ]
RA: 248.197231340375 Dec: 61.5954132033376 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 248.210266476575 Dec: 61.6110574920648 [deg; J2000]
{ 16h 32m 50.5s , +61d 36' 39.8" }
+/- 2.24512996958931 [arcmin] (estimated 90% radius based on SNR)
+/- 1.21817189831926 [arcmin] (formal 1-sigma fit error)
SNR: 9.57954378680222
Angular difference between the analysis and refined position is 1.009666 arcmin
Partial Coding Fraction: 0.1035156 [ including projection effects ]
Duration
T90: 91.0080000162125 +/- 12.6049538740041
Measured from: 3.75199997425079
to: 94.7599999904633 [s; relative to TRIGTIME]
T50: 34.6240000724792 +/- 9.41458278576535
Measured from: 18.5360000133514
to: 53.1600000858307 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 24.4919999837875
to: 25.4919999837875 [s; relative to TRIGTIME]
Total Fluence
Measured from: 1.67200005054474
to: 109.927999973297 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.027111 3.525925 3.355896 1.375175
0.252841 0.232197 0.203890 0.169297 [error]
Peak 0.041381 0.106692 0.112077 0.055024
0.025567 0.026820 0.024378 0.017861 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 108.256 1.672 109.928
T90 91.008 3.752 94.760
T50 34.624 18.536 53.160
Peak 1.000 24.492 25.492
====== 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 -1.289 -0.122 0.124 - - - 7.12e-03 -4.84e-04 4.81e-04 60.190 57
CPL -1.244 -0.167 0.328 977.412 -977.412 -977.412 7.46e-03 -7.82e-04 2.44e-03 60.400 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 -2.193 -0.491 0.399 - - - 1.27e-02 -4.72e-03 4.65e-03 64.000 57
CPL 1.210 -2.111 3.921 61.680 -16.728 14.321 3.49e-01 -3.49e-01 5.49e+00 55.600 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 8.08e-07 1.69e-06 2.77e-06 1.02e-05 7.64e-06 1.55e-05 erg/cm2
90%_error_low -1.15e-07 -1.47e-07 -1.98e-07 -1.63e-06 -5.09e-07 -1.71e-06 erg/cm2
90%_error_hi 1.23e-07 1.46e-07 1.97e-07 1.83e-06 5.10e-07 1.87e-06 erg/cm2
Peak flux PL 1.02e+00 6.87e-01 3.01e-01 1.82e-01 2.10e+00 2.19e+00 ph/cm2/s
90%_error_low -4.30e-01 -2.38e-01 -1.29e-01 -1.11e-01 -7.43e-01 -7.54e-01 ph/cm2/s
90%_error_hi 4.74e-01 2.37e-01 1.27e-01 1.42e-01 7.51e-01 7.67e-01 ph/cm2/s
Fluence CPL 8.07e-07 1.68e-06 2.73e-06 1.06e-05 7.64e-06 1.56e-05 erg/cm2
90%_error_low -1.16e-07 -1.38e-07 -1.58e-07 -1.09e-06 -5.09e-07 -3.62e-06 erg/cm2
90%_error_hi 1.22e-07 1.54e-07 2.55e-07 1.39e-06 5.10e-07 1.79e-06 erg/cm2
Peak flux CPL 4.02e-01 8.62e-01 6.37e-01 1.07e-01 1.99e+00 2.01e+00 ph/cm2/s
90%_error_low -4.02e-01 -4.09e-01 -2.62e-01 -1.07e-01 -7.06e-01 -7.05e-01 ph/cm2/s
90%_error_hi 5.53e-01 3.24e-01 2.94e-01 9.93e-02 7.43e-01 7.48e-01 ph/cm2/s
======================================================================