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 Aug 15 13:40:54 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger916733
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Trigger: 00916733 Segment: 000
BAT Trigger Time: 585951520.332 [s; MET]
Trigger Stop: 585951520.396 [s; MET]
UTC: 2019-07-27T20:18:17.019680 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 126.480723836389 Dec: -13.2677573048208 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.74
Image Trigger?: NO
Rate S/N Ratio: 11.7046999107196 [ if not an image trigger ]
Image S/N Ratio: 7.74
Analysis Position: [ source = BAT ]
RA: 126.480723836389 Dec: -13.2677573048208 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 126.499429134113 Dec: -13.2722450683654 [deg; J2000]
{ 08h 25m 59.9s , -13d 16' 20.1" }
+/- 0.654543533499944 [arcmin] (estimated 90% radius based on SNR)
+/- 0.174941812807845 [arcmin] (formal 1-sigma fit error)
SNR: 55.7267002158184
Angular difference between the analysis and refined position is 1.125049 arcmin
Partial Coding Fraction: 0.703125 [ including projection effects ]
Duration
T90: 39.1959999799728 +/- 1.31134127710442
Measured from: -17.7640000581741
to: 21.4319999217987 [s; relative to TRIGTIME]
T50: 12.8399999141693 +/- 0.175727075310714
Measured from: 0.636000037193298
to: 13.4759999513626 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.13199996948242
to: 2.13199996948242 [s; relative to TRIGTIME]
Total Fluence
Measured from: -21.4880000352859
to: 38.9559999704361 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 7.174098 10.107455 8.227209 2.341905
0.094058 0.105640 0.097163 0.073177 [error]
Peak 0.556972 0.959297 0.889451 0.273219
0.020702 0.025931 0.026721 0.020442 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 60.444 -21.488 38.956
T90 39.196 -17.764 21.432
T50 12.840 0.636 13.476
Peak 1.000 1.132 2.132
====== 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 -1.413 -0.032 0.032 - - - 3.08e-02 -5.11e-04 5.10e-04 45.570 57
CPL -1.373 -0.052 0.089 946.008 -946.008 -946.008 3.21e-02 -1.61e-03 2.46e-03 45.930 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 -1.195 -0.058 0.058 - - - 1.81e-01 -5.78e-03 5.78e-03 60.410 57
CPL -1.033 -0.185 0.225 330.700 -330.700 -330.700 2.15e-01 -3.72e-02 5.60e-02 58.750 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 2.20e-06 4.25e-06 6.39e-06 2.08e-05 1.80e-05 3.36e-05 erg/cm2
90%_error_low -8.11e-08 -9.11e-08 -1.15e-07 -8.94e-07 -2.93e-07 -9.24e-07 erg/cm2
90%_error_hi 8.25e-08 9.10e-08 1.15e-07 9.23e-07 2.93e-07 9.46e-07 erg/cm2
Peak flux PL 1.48e-03 1.76e-02 1.90e-01 2.32e+01 1.18e+00 2.26e+01 ph/cm2/s
90%_error_low N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_hi N/A N/A N/A N/A N/A N/A ph/cm2/s
Fluence CPL 2.11e-06 2.78e-06 2.81e-06 6.40e-06 9.16e-06 1.34e-05 erg/cm2
90%_error_low -1.40e-07 -1.15e-07 -1.29e-07 -2.81e-07 -4.34e-07 -6.16e-07 erg/cm2
90%_error_hi 8.24e-08 7.27e-08 9.64e-07 3.45e-07 3.36e-07 9.76e-07 erg/cm2
Peak flux CPL 5.36e+00 6.79e+00 5.98e+00 7.38e+00 2.11e+01 2.55e+01 ph/cm2/s
90%_error_low -4.42e-01 -2.71e-01 -2.58e-01 -1.53e+00 -7.34e-01 -1.73e+00 ph/cm2/s
90%_error_hi 4.49e-01 2.73e-01 2.60e-01 1.31e+00 7.34e-01 1.94e+00 ph/cm2/s
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