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: Tue Oct 8 22:21:28 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger922808
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Trigger: 00922808 Segment: 000
BAT Trigger Time: 588690022.912 [s; MET]
Trigger Stop: 588690023.936 [s; MET]
UTC: 2019-08-28T12:59:59.424820 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 251.818484637617 Dec: 27.2367605883349 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.03
Image Trigger?: NO
Rate S/N Ratio: 23.8537208837531 [ if not an image trigger ]
Image S/N Ratio: 10.03
Analysis Position: [ source = BAT ]
RA: 251.818484637617 Dec: 27.2367605883349 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 251.83879365898 Dec: 27.2873737686881 [deg; J2000]
{ 16h 47m 21.3s , +27d 17' 14.5" }
+/- 0.976653754306827 [arcmin] (estimated 90% radius based on SNR)
+/- 0.282679763818496 [arcmin] (formal 1-sigma fit error)
SNR: 31.4611527723104
Angular difference between the analysis and refined position is 3.224188 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 715.856000065804 +/- 451.971925576952
Measured from: -28.0239999294281
to: 687.832000136375 [s; relative to TRIGTIME]
T50: 29.7120000123978 +/- 4.12042716372911
Measured from: 1.92800009250641
to: 31.6400001049042 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 10.7960000038147
to: 11.7960000038147 [s; relative to TRIGTIME]
Total Fluence
Measured from: -42.3599998950958
to: 898.360000014305 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.766398 2.671623 2.089097 0.594960
0.216751 0.216868 0.188473 0.163426 [error]
Peak 0.069659 0.108446 0.108280 0.032659
0.008510 0.009509 0.009424 0.007219 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 940.720 -42.360 898.360
T90 715.856 -28.024 687.832
T50 29.712 1.928 31.640
Peak 1.000 10.796 11.796
====== 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 -1.343 -0.160 0.161 - - - 4.86e-04 -4.31e-05 4.29e-05 50.470 57
CPL -1.337 -0.164 0.558 9991.630 -9991.630 -9991.630 4.88e-04 -4.88e-04 4.15e-04 50.470 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 -1.150 -0.157 0.158 - - - 2.02e-02 -1.83e-03 1.83e-03 50.530 57
CPL -0.949 -0.338 0.645 276.246 -276.246 -276.246 2.53e-02 -6.70e-03 2.56e-02 50.170 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 5.04e-07 1.02e-06 1.61e-06 5.61e-06 4.47e-06 8.75e-06 erg/cm2
90%_error_low -8.08e-08 -9.92e-08 -1.82e-07 -1.29e-06 -4.43e-07 -1.43e-06 erg/cm2
90%_error_hi 8.45e-08 9.80e-08 1.80e-07 1.54e-06 4.47e-07 1.64e-06 erg/cm2
Peak flux PL 5.95e-01 7.38e-01 6.66e-01 1.04e+00 2.36e+00 3.04e+00 ph/cm2/s
90%_error_low -9.82e-02 -7.65e-02 -7.25e-02 -2.21e-01 -2.15e-01 -3.03e-01 ph/cm2/s
90%_error_hi 1.03e-01 7.56e-02 7.17e-02 2.57e-01 2.15e-01 3.11e-01 ph/cm2/s
Fluence CPL 5.08e-07 1.02e-06 1.60e-06 5.92e-06 4.49e-06 9.11e-06 erg/cm2
90%_error_low -9.12e-08 -1.00e-07 -1.90e-07 -3.47e-06 -5.31e-07 -3.57e-06 erg/cm2
90%_error_hi 8.80e-08 1.08e-07 2.12e-07 5.05e-07 3.62e-07 1.72e-08 erg/cm2
Peak flux CPL 5.72e-01 7.52e-01 6.80e-01 8.19e-01 2.34e+00 2.82e+00 ph/cm2/s
90%_error_low -1.19e-01 -8.46e-02 -8.10e-02 -3.95e-01 -2.22e-01 -4.61e-01 ph/cm2/s
90%_error_hi 6.09e-02 8.73e-02 8.40e-02 2.81e-01 2.21e-01 3.86e-01 ph/cm2/s
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