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 20:34:40 EDT 2025
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1319125
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Trigger: 01319125 Segment: 000
BAT Trigger Time: 770324358.592 [s; MET]
Trigger Stop: 770324360.64 [s; MET]
UTC: 2025-05-30T18:58:42.893720 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 55.143001589254 Dec: -22.4591568533006 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.76
Image Trigger?: NO
Rate S/N Ratio: 13.4536240470737 [ if not an image trigger ]
Image S/N Ratio: 6.76
Analysis Position: [ source = BAT ]
RA: 55.143001589254 Dec: -22.4591568533006 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 55.1416226771692 Dec: -22.4575281881256 [deg; J2000]
{ 03h 40m 34.0s , -22d 27' 27.1" }
+/- 1.91618483682402 [arcmin] (estimated 90% radius based on SNR)
+/- 1.04395511088916 [arcmin] (formal 1-sigma fit error)
SNR: 12.0125824398403
Angular difference between the analysis and refined position is 0.124078 arcmin
Partial Coding Fraction: 0.9609375 [ including projection effects ]
Duration
T90: 65.3279999494553 +/- 25.1066792740014
Measured from: -28.1679999828339
to: 37.1599999666214 [s; relative to TRIGTIME]
T50: 26.8000000715256 +/- 5.67594227565369
Measured from: -20.0240000486374
to: 6.77600002288818 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.276000022888184
to: 0.723999977111816 [s; relative to TRIGTIME]
Total Fluence
Measured from: -29.7360000610352
to: 57.960000038147 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.360134 0.454528 0.402296 0.156616
0.054539 0.056921 0.048262 0.041008 [error]
Peak 0.024320 0.036979 0.033686 0.008456
0.006373 0.006819 0.005774 0.004775 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 87.696 -29.736 57.960
T90 65.328 -28.168 37.160
T50 26.800 -20.024 6.776
Peak 1.000 -0.276 0.724
====== 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 -1.333 -0.216 0.219 - - - 1.02e-03 -1.22e-04 1.22e-04 63.680 57
CPL -1.315 -1.196 0.639 9988.330 -9988.330 -9988.330 1.04e-03 -8.07e-04 1.00e-03 63.760 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 -1.248 -0.317 0.329 - - - 6.94e-03 -1.25e-03 1.25e-03 35.190 57
CPL -1.160 -2.173 1.119 500.337 -500.337 -500.337 7.66e-03 -1.95e-03 1.73e-02 35.220 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 9.75e-08 1.98e-07 3.15e-07 1.11e-06 8.75e-07 1.72e-06 erg/cm2
90%_error_low -2.12e-08 -2.66e-08 -4.78e-08 -3.33e-07 -1.17e-07 -3.71e-07 erg/cm2
90%_error_hi 2.25e-08 2.61e-08 4.71e-08 4.23e-07 1.18e-07 4.46e-07 erg/cm2
Peak flux PL 2.24e-01 2.62e-01 2.21e-01 3.15e-01 8.20e-01 1.02e+00 ph/cm2/s
90%_error_low -7.42e-02 -5.63e-02 -4.74e-02 -1.22e-01 -1.53e-01 -1.92e-01 ph/cm2/s
90%_error_hi 8.15e-02 5.46e-02 4.64e-02 1.66e-01 1.53e-01 1.96e-01 ph/cm2/s
Fluence CPL 9.85e-08 1.97e-07 3.13e-07 1.17e-06 8.79e-07 1.65e-06 erg/cm2
90%_error_low -2.51e-08 -2.72e-08 -4.98e-08 -7.29e-07 -1.32e-07 -6.13e-07 erg/cm2
90%_error_hi 2.31e-08 2.97e-08 5.43e-08 1.43e-07 1.24e-07 4.92e-07 erg/cm2
Peak flux CPL 2.25e-01 2.62e-01 2.21e-01 3.22e-01 8.21e-01 1.03e+00 ph/cm2/s
90%_error_low -8.77e-02 -5.59e-02 -4.68e-02 -6.60e-02 -1.54e-01 -2.96e-01 ph/cm2/s
90%_error_hi 6.30e-02 6.17e-02 4.64e-02 1.56e-01 1.52e-01 1.76e-01 ph/cm2/s
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