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 v2.46
Process Start Time: Thu Apr 5 17:37:37 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger813721
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Trigger: 00813721 Segment: 000
BAT Trigger Time: 542484249.856 [s; MET]
Trigger Stop: 542484258.048 [s; MET]
UTC: 2018-03-11T18:03:49.248040 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 3.43345521460187 Dec: -54.4789735818177 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.58
Image Trigger?: NO
Rate S/N Ratio: 10 [ if not an image trigger ]
Image S/N Ratio: 8.58
Analysis Position: [ source = BAT ]
RA: 3.43345521460187 Dec: -54.4789735818177 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 3.37934331062735 Dec: -54.4907346705799 [deg; J2000]
{ 00h 13m 31.0s , -54d 29' 26.6" }
+/- 2.29200675215556 [arcmin] (estimated 90% radius based on SNR)
+/- 0.829827612774513 [arcmin] (formal 1-sigma fit error)
SNR: 9.30088442031222
Angular difference between the analysis and refined position is 2.013763 arcmin
Partial Coding Fraction: 0.9453125 [ including projection effects ]
Duration
T90: 23.039999961853 +/- 8.71246656581249
Measured from: 0.720000028610229
to: 23.7599999904633 [s; relative to TRIGTIME]
T50: 8.6399998664856 +/- 8.98761462925503
Measured from: 3.34400010108948
to: 11.9839999675751 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.87600004673004
to: 3.87600004673004 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.239999890327454
to: 26.5760000944138 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.232061 0.227337 0.108858 0.041243
0.033005 0.034387 0.030431 0.027897 [error]
Peak 0.014623 0.036197 0.010613 0.003063
0.006502 0.006893 0.006189 0.005498 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 26.816 -0.240 26.576
T90 23.040 0.720 23.760
T50 8.640 3.344 11.984
Peak 1.000 2.876 3.876
====== 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 -1.781 -0.295 0.279 - - - 1.35e-03 -2.66e-04 2.59e-04 65.740 57
CPL -0.767 -1.256 1.675 49.633 -14.813 -49.633 5.32e-03 -5.32e-03 4.72e-02 63.740 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 -1.497 -0.465 0.456 - - - 4.65e-03 -1.34e-03 1.32e-03 58.460 57
CPL 0.043 -1.921 5.794 55.605 -29.436 -55.605 3.55e-02 -3.55e-02 7.11e+01 57.650 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 6.02e-08 9.31e-08 1.08e-07 2.43e-07 3.33e-07 5.05e-07 erg/cm2
90%_error_low -1.35e-08 -1.52e-08 -2.80e-08 -1.05e-07 -6.59e-08 -1.39e-07 erg/cm2
90%_error_hi 1.40e-08 1.52e-08 2.88e-08 1.48e-07 6.81e-08 1.75e-07 erg/cm2
Peak flux PL 1.91e-01 1.92e-01 1.36e-01 1.54e-01 5.80e-01 6.73e-01 ph/cm2/s
90%_error_low -7.80e-02 -5.43e-02 -4.86e-02 -8.59e-02 -1.58e-01 -1.87e-01 ph/cm2/s
90%_error_hi 8.52e-02 5.36e-02 4.86e-02 1.36e-01 1.58e-01 1.92e-01 ph/cm2/s
Fluence CPL 5.61e-08 1.06e-07 1.02e-07 4.84e-08 2.97e-07 3.12e-07 erg/cm2
90%_error_low -1.54e-08 -2.13e-08 -3.76e-08 -4.20e-08 -6.87e-08 -8.25e-08 erg/cm2
90%_error_hi 1.52e-08 2.26e-08 3.39e-08 2.35e-07 7.93e-08 2.60e-07 erg/cm2
Peak flux CPL 1.63e-01 2.33e-01 1.29e-01 2.14e-02 5.44e-01 5.48e-01 ph/cm2/s
90%_error_low -1.63e-01 -8.14e-02 N/A -2.14e-02 -1.70e-01 -1.74e-01 ph/cm2/s
90%_error_hi 9.96e-02 9.43e-02 N/A 1.63e-01 1.73e-01 2.52e-01 ph/cm2/s
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