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 22:34:15 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger920783
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Trigger: 00920783 Segment: 000
BAT Trigger Time: 587659368 [s; MET]
Trigger Stop: 587659448 [s; MET]
UTC: 2019-08-16T14:42:24.578600 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 341.193592693739 Dec: -29.7399634001357 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.26
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 8.26
Analysis Position: [ source = BAT ]
RA: 341.193592693739 Dec: -29.7399634001357 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 341.181560239531 Dec: -29.7446124365791 [deg; J2000]
{ 22h 44m 43.6s , -29d 44' 40.6" }
+/- 1.66865306377129 [arcmin] (estimated 90% radius based on SNR)
+/- 0.543288707815764 [arcmin] (formal 1-sigma fit error)
SNR: 14.6370175649813
Angular difference between the analysis and refined position is 0.686105 arcmin
Partial Coding Fraction: 0.3085938 [ including projection effects ]
Duration
T90: 375.759999990463 +/- 92.2201941781066
Measured from: -118.447999954224
to: 257.31200003624 [s; relative to TRIGTIME]
T50: 150.447999954224 +/- 10.7873257921812
Measured from: 10.0800000429153
to: 160.527999997139 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 151.572000026703
to: 152.572000026703 [s; relative to TRIGTIME]
Total Fluence
Measured from: -206.480000019073
to: 341.552000045776 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 4.884625 5.586613 4.365112 1.478426
0.282218 0.293387 0.256139 0.215530 [error]
Peak 0.051310 0.060884 0.046232 0.007398
0.012464 0.014083 0.011942 0.009179 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 548.032 -206.480 341.552
T90 375.760 -118.448 257.312
T50 150.448 10.080 160.528
Peak 1.000 151.572 152.572
====== 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 -1.619 -0.107 0.106 - - - 1.91e-03 -1.12e-04 1.12e-04 44.330 57
CPL -1.620 -0.104 0.109 9999.360 -9999.360 -9999.360 1.91e-03 -3.40e-04 8.91e-04 44.340 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 -1.917 -0.446 0.386 - - - 8.87e-03 -2.75e-03 2.65e-03 73.170 57
CPL -0.429 -1.566 2.422 47.860 N/A N/A 5.91e-02 N/A N/A 70.530 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 1.49e-06 2.55e-06 3.32e-06 8.77e-06 9.76e-06 1.61e-05 erg/cm2
90%_error_low -1.47e-07 -1.51e-07 -2.62e-07 -1.42e-06 -6.15e-07 -1.63e-06 erg/cm2
90%_error_hi 1.52e-07 1.51e-07 2.61e-07 1.59e-06 6.20e-07 1.77e-06 erg/cm2
Peak flux PL 5.46e-01 4.30e-01 2.27e-01 1.75e-01 1.28e+00 1.38e+00 ph/cm2/s
90%_error_low -1.78e-01 -1.09e-01 -8.65e-02 -1.17e-01 -3.25e-01 -3.54e-01 ph/cm2/s
90%_error_hi 1.89e-01 1.09e-01 8.80e-02 1.47e-01 3.25e-01 3.56e-01 ph/cm2/s
Fluence CPL 1.50e-06 2.54e-06 3.32e-06 9.19e-06 9.79e-06 1.62e-05 erg/cm2
90%_error_low N/A -1.53e-07 -2.87e-07 N/A -7.10e-07 -3.64e-06 erg/cm2
90%_error_hi N/A 1.85e-07 3.08e-07 N/A 5.01e-07 8.79e-07 erg/cm2
Peak flux CPL 4.62e-01 5.18e-01 2.49e-01 4.56e-02 1.27e+00 1.27e+00 ph/cm2/s
90%_error_low -2.06e-01 -1.44e-01 N/A -4.56e-02 -3.23e-01 -3.26e-01 ph/cm2/s
90%_error_hi 2.12e-01 1.55e-01 N/A 1.59e-01 3.24e-01 3.37e-01 ph/cm2/s
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