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 Oct 19 23:42:05 EDT 2022
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger996503
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Trigger: 00996503 Segment: 000
BAT Trigger Time: 622173166.592 [s; MET]
Trigger Stop: 622173170.688 [s; MET]
UTC: 2020-09-19T01:52:20.932860 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 168.915726722106 Dec: 32.4569651703903 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.51
Image Trigger?: NO
Rate S/N Ratio: 14.456832294801 [ if not an image trigger ]
Image S/N Ratio: 9.51
Analysis Position: [ source = BAT ]
RA: 168.915726722106 Dec: 32.4569651703903 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 168.898720778248 Dec: 32.4534957566324 [deg; J2000]
{ 11h 15m 35.7s , +32d 27' 12.6" }
+/- 1.47766268218705 [arcmin] (estimated 90% radius based on SNR)
+/- 0.576664110169208 [arcmin] (formal 1-sigma fit error)
SNR: 17.4127732051079
Angular difference between the analysis and refined position is 0.885795 arcmin
Partial Coding Fraction: 0.625 [ including projection effects ]
Duration
T90: 108.432000041008 +/- 21.5348603229185
Measured from: -56.8079999685287
to: 51.6240000724792 [s; relative to TRIGTIME]
T50: 27.8400000333786 +/- 9.0282258569339
Measured from: -17.5440000295639
to: 10.2960000038147 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.03600001335144
to: 2.03600001335144 [s; relative to TRIGTIME]
Total Fluence
Measured from: -61.4639999866486
to: 70.5039999485016 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.580862 1.527997 0.565105 0.342199
0.095365 0.097758 0.086811 0.082105 [error]
Peak 0.056943 0.060210 0.031821 0.003747
0.008891 0.009433 0.008329 0.007047 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 131.968 -61.464 70.504
T90 108.432 -56.808 51.624
T50 27.840 -17.544 10.296
Peak 1.000 1.036 2.036
====== 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 -2.247 -0.170 0.162 - - - 1.50e-03 -1.73e-04 1.70e-04 58.760 57
CPL -2.237 -0.299 0.152 9999.360 N/A N/A 1.51e-03 N/A N/A 58.780 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 -1.825 -0.302 0.279 - - - 9.05e-03 -1.90e-03 1.86e-03 58.540 57
CPL -0.353 -1.226 1.683 47.032 -11.653 33.750 6.41e-02 -6.41e-02 5.80e-01 54.110 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 5.12e-07 5.99e-07 5.04e-07 7.19e-07 1.87e-06 2.33e-06 erg/cm2
90%_error_low -5.46e-08 -4.91e-08 -7.90e-08 -1.97e-07 -1.79e-07 -3.01e-07 erg/cm2
90%_error_hi 5.55e-08 4.89e-08 8.20e-08 2.46e-07 1.83e-07 3.37e-07 erg/cm2
Peak flux PL 5.09e-01 4.23e-01 2.39e-01 2.00e-01 1.26e+00 1.37e+00 ph/cm2/s
90%_error_low -1.19e-01 -7.37e-02 -6.29e-02 -8.42e-02 -2.19e-01 -2.45e-01 ph/cm2/s
90%_error_hi 1.24e-01 7.37e-02 6.43e-02 1.14e-01 2.19e-01 2.47e-01 ph/cm2/s
Fluence CPL 5.00e-07 5.79e-07 5.00e-07 3.72e-07 1.81e-06 1.97e-06 erg/cm2
90%_error_low -4.58e-08 -1.17e-08 -3.64e-08 -2.73e-07 -1.94e-07 -3.70e-07 erg/cm2
90%_error_hi 5.81e-08 8.55e-08 7.43e-08 2.81e-07 2.04e-07 4.43e-07 erg/cm2
Peak flux CPL 4.46e-01 5.05e-01 2.37e-01 3.99e-02 1.22e+00 1.23e+00 ph/cm2/s
90%_error_low -1.35e-01 -1.00e-01 -8.47e-02 -3.99e-02 -2.18e-01 -2.22e-01 ph/cm2/s
90%_error_hi 1.38e-01 1.06e-01 7.88e-02 1.10e-01 2.19e-01 2.30e-01 ph/cm2/s
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