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 15:16:30 EDT 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1152509
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Trigger: 01152509 Segment: 000
BAT Trigger Time: 697172248 [s; MET]
Trigger Stop: 697172312 [s; MET]
UTC: 2023-02-04T02:56:57.304260 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 238.16447566395 Dec: -50.8579554299044 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.78
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.78
Analysis Position: [ source = BAT ]
RA: 238.16447566395 Dec: -50.8579554299044 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 238.146638473473 Dec: -50.8480355552668 [deg; J2000]
{ 15h 52m 35.2s , -50d 50' 52.9" }
+/- 2.49560617367993 [arcmin] (estimated 90% radius based on SNR)
+/- 1.31814913004341 [arcmin] (formal 1-sigma fit error)
SNR: 8.23614570246709
Angular difference between the analysis and refined position is 0.900421 arcmin
Partial Coding Fraction: 0.4882812 [ including projection effects ]
Duration
T90: 186.192000031471 +/- 23.7577641833218
Measured from: -5.19200003147125
to: 181 [s; relative to TRIGTIME]
T50: 108.320000052452 +/- 22.3625113793964
Measured from: 45.1280000209808
to: 153.448000073433 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 148.108000040054
to: 149.108000040054 [s; relative to TRIGTIME]
Total Fluence
Measured from: -23.9119999408722
to: 195.592000007629 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.994299 2.546794 1.695147 0.322284
0.180038 0.168897 0.142520 0.119340 [error]
Peak 0.024123 0.047075 0.042050 0.019619
0.010842 0.010094 0.008785 0.007409 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 219.504 -23.912 195.592
T90 186.192 -5.192 181.000
T50 108.320 45.128 153.448
Peak 1.000 148.108 149.108
====== 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 -1.698 -0.136 0.134 - - - 1.86e-03 -1.52e-04 1.50e-04 40.160 57
CPL -1.220 -0.520 0.598 75.934 -20.927 -75.934 3.35e-03 -1.53e-03 3.53e-03 37.720 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 -0.990 -0.464 0.535 - - - 7.71e-03 -1.99e-03 1.88e-03 49.310 57
CPL -1.009 -0.444 0.565 9999.360 -9999.360 -9999.360 7.79e-03 -2.02e-03 1.06e-02 49.330 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 6.29e-07 1.02e-06 1.26e-06 3.07e-06 3.79e-06 5.99e-06 erg/cm2
90%_error_low -7.59e-08 -7.84e-08 -1.37e-07 -6.44e-07 -3.23e-07 -7.76e-07 erg/cm2
90%_error_hi 7.82e-08 7.84e-08 1.38e-07 7.53e-07 3.26e-07 8.60e-07 erg/cm2
Peak flux PL 1.95e-01 2.66e-01 2.68e-01 4.89e-01 8.87e-01 1.22e+00 ph/cm2/s
90%_error_low -1.02e-01 -9.44e-02 -6.77e-02 -2.36e-01 -2.26e-01 -3.00e-01 ph/cm2/s
90%_error_hi 1.25e-01 8.79e-02 6.58e-02 3.79e-01 2.28e-01 3.27e-01 ph/cm2/s
Fluence CPL 5.89e-07 1.08e-06 1.28e-06 1.46e-06 3.62e-06 4.40e-06 erg/cm2
90%_error_low -8.84e-08 -9.82e-08 -1.48e-07 -7.67e-07 -3.67e-07 -8.58e-07 erg/cm2
90%_error_hi 8.93e-08 1.01e-07 1.48e-07 1.81e-06 3.71e-07 1.85e-06 erg/cm2
Peak flux CPL 1.95e-01 2.69e-01 2.65e-01 5.01e-01 9.07e-01 1.22e+00 ph/cm2/s
90%_error_low N/A -9.81e-02 N/A N/A -2.46e-01 -3.70e-01 ph/cm2/s
90%_error_hi N/A 8.68e-02 N/A N/A 2.08e-01 3.22e-01 ph/cm2/s
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