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 23:43:40 EDT 2022
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger996184
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Trigger: 00996184 Segment: 000
BAT Trigger Time: 622007573.952 [s; MET]
Trigger Stop: 622007578.048 [s; MET]
UTC: 2020-09-17T03:52:28.303740 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 235.753465520776 Dec: -4.69532441409532 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.11
Image Trigger?: NO
Rate S/N Ratio: 14 [ if not an image trigger ]
Image S/N Ratio: 9.11
Analysis Position: [ source = BAT ]
RA: 235.753465520776 Dec: -4.69532441409532 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 235.73582557468 Dec: -4.69085680206094 [deg; J2000]
{ 15h 42m 56.6s , -04d 41' 27.1" }
+/- 2.00266313250486 [arcmin] (estimated 90% radius based on SNR)
+/- 0.876865199195135 [arcmin] (formal 1-sigma fit error)
SNR: 11.2784637318641
Angular difference between the analysis and refined position is 1.088375 arcmin
Partial Coding Fraction: 0.9609375 [ including projection effects ]
Duration
T90: 21 +/- 4.24264068711928
Measured from: -12.9520000219345
to: 8.04799997806549 [s; relative to TRIGTIME]
T50: 10 +/- 5
Measured from: -4.95200002193451
to: 5.04799997806549 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 5.04799997806549
to: 6.04799997806549 [s; relative to TRIGTIME]
Total Fluence
Measured from: -14.9520000219345
to: 10.0479999780655 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.325534 0.281063 0.109397 0.022409
0.037835 0.034429 0.030336 0.028872 [error]
Peak 0.028375 0.028009 0.013962 0.013688
0.007792 0.007226 0.005975 0.005832 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 25.000 -14.952 10.048
T90 21.000 -12.952 8.048
T50 10.000 -4.952 5.048
Peak 1.000 5.048 6.048
====== 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 -2.340 -0.319 0.290 - - - 1.35e-03 -3.01e-04 2.98e-04 36.520 57
CPL -1.661 -0.341 1.988 17.456 -17.072 21.926 3.68e-03 -3.68e-03 7.50e-02 35.780 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 -1.849 -0.561 0.536 - - - 4.08e-03 -1.44e-03 1.38e-03 67.130 57
CPL -1.720 N/A N/A 67.727 N/A N/A 4.98e-03 N/A N/A 67.170 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 9.55e-08 1.06e-07 8.35e-08 1.09e-07 3.25e-07 3.94e-07 erg/cm2
90%_error_low -1.69e-08 -1.64e-08 -2.44e-08 -5.09e-08 -5.66e-08 -8.75e-08 erg/cm2
90%_error_hi 1.72e-08 1.60e-08 2.67e-08 7.68e-08 5.95e-08 1.08e-07 erg/cm2
Peak flux PL 2.35e-01 1.93e-01 1.07e-01 8.74e-02 5.73e-01 6.22e-01 ph/cm2/s
90%_error_low -9.67e-02 -5.52e-02 -4.67e-02 -5.62e-02 -1.65e-01 -1.81e-01 ph/cm2/s
90%_error_hi 1.02e-01 5.52e-02 4.97e-02 1.05e-01 1.65e-01 1.83e-01 ph/cm2/s
Fluence CPL 9.33e-08 1.13e-07 7.23e-08 2.73e-08 2.98e-07 3.06e-07 erg/cm2
90%_error_low -1.81e-08 -1.89e-08 -3.87e-08 N/A -6.41e-08 -7.24e-08 erg/cm2
90%_error_hi 1.73e-08 2.24e-08 3.38e-08 N/A 7.27e-08 9.04e-08 erg/cm2
Peak flux CPL 2.35e-01 1.92e-01 1.07e-01 8.78e-02 5.73e-01 6.24e-01 ph/cm2/s
90%_error_low -9.65e-02 -4.06e-02 -4.68e-02 -8.78e-02 -2.34e-01 -2.85e-01 ph/cm2/s
90%_error_hi 1.02e-01 1.43e-01 4.87e-02 7.21e-02 1.25e-01 1.26e-01 ph/cm2/s
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