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: Wed Jun 14 15:14:02 EDT 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1154815
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Trigger: 01154815 Segment: 000
BAT Trigger Time: 698251745.6 [s; MET]
Trigger Stop: 698251747.648 [s; MET]
UTC: 2023-02-16T14:48:34.830740 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 113.966019310163 Dec: -8.01514618542377 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.91
Image Trigger?: NO
Rate S/N Ratio: 8.83176086632785 [ if not an image trigger ]
Image S/N Ratio: 7.91
Analysis Position: [ source = BAT ]
RA: 113.966019310163 Dec: -8.01514618542377 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 113.96596489547 Dec: -7.99355296059845 [deg; J2000]
{ 07h 35m 51.8s , -07d 59' 36.8" }
+/- 2.13159207191573 [arcmin] (estimated 90% radius based on SNR)
+/- 1.01772383349777 [arcmin] (formal 1-sigma fit error)
SNR: 10.3167070725021
Angular difference between the analysis and refined position is 1.295598 arcmin
Partial Coding Fraction: 0.8515625 [ including projection effects ]
Duration
T90: 91.1999999284744 +/- 7.53924343521546
Measured from: -78.8960000276566
to: 12.3039999008179 [s; relative to TRIGTIME]
T50: 55.6159999370575 +/- 28.9156788765114
Measured from: -55.0240000486374
to: 0.591999888420105 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.131999969482422
to: 0.868000030517578 [s; relative to TRIGTIME]
Total Fluence
Measured from: -81.0720000267029
to: 16.7839999198914 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.937724 0.896558 0.437592 0.037500
0.099752 0.102789 0.089962 0.085937 [error]
Peak 0.049420 0.073928 0.028941 0.000367
0.011288 0.011900 0.010031 0.009239 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 97.856 -81.072 16.784
T90 91.200 -78.896 12.304
T50 55.616 -55.024 0.592
Peak 1.000 -0.132 0.868
====== 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 -1.918 -0.240 0.225 - - - 1.39e-03 -2.23e-04 2.18e-04 46.520 57
CPL -1.334 -0.779 1.071 47.229 -45.854 -47.229 3.05e-03 -3.05e-03 9.68e-03 45.260 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 -1.911 -0.389 0.354 - - - 8.51e-03 -2.32e-03 2.25e-03 63.140 57
CPL -0.550 -1.539 2.909 41.953 -41.953 78.477 5.64e-02 -5.64e-02 4.20e+00 60.950 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 2.58e-07 3.68e-07 3.90e-07 7.63e-07 1.25e-06 1.78e-06 erg/cm2
90%_error_low -4.37e-08 -4.60e-08 -8.34e-08 -2.80e-07 -1.92e-07 -3.83e-07 erg/cm2
90%_error_hi 4.47e-08 4.59e-08 8.58e-08 3.73e-07 1.98e-07 4.58e-07 erg/cm2
Peak flux PL 5.21e-01 4.11e-01 2.19e-01 1.69e-01 1.23e+00 1.32e+00 ph/cm2/s
90%_error_low -1.47e-01 -8.92e-02 -7.40e-02 -8.75e-02 -2.65e-01 -2.91e-01 ph/cm2/s
90%_error_hi 1.53e-01 8.91e-02 7.68e-02 1.30e-01 2.65e-01 2.94e-01 ph/cm2/s
Fluence CPL 2.47e-07 3.96e-07 3.78e-07 2.77e-07 1.18e-06 1.30e-06 erg/cm2
90%_error_low -4.90e-08 -7.10e-08 -9.80e-08 -2.10e-07 -2.08e-07 -3.09e-07 erg/cm2
90%_error_hi 4.84e-08 6.37e-08 9.37e-08 6.72e-07 2.27e-07 6.72e-07 erg/cm2
Peak flux CPL 4.78e-01 4.87e-01 2.04e-01 3.11e-02 1.20e+00 1.20e+00 ph/cm2/s
90%_error_low -1.65e-01 -1.22e-01 -1.15e-01 -3.11e-02 -2.64e-01 -2.68e-01 ph/cm2/s
90%_error_hi 1.66e-01 1.40e-01 9.41e-02 1.78e-01 2.66e-01 2.82e-01 ph/cm2/s
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