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.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Thu Mar 21 17:08:32 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger887217
======================================================================
Trigger: 00887217 Segment: 000
BAT Trigger Time: 570764392.704 [s; MET]
Trigger Stop: 570764395.776 [s; MET]
UTC: 2019-02-02T01:39:30.355340 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 166.512275970226 Dec: 9.38809738122639 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.85
Image Trigger?: NO
Rate S/N Ratio: 68.0661443009665 [ if not an image trigger ]
Image S/N Ratio: 7.85
Analysis Position: [ source = BAT ]
RA: 166.512275970226 Dec: 9.38809738122639 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 166.505509020556 Dec: 9.39026649349575 [deg; J2000]
{ 11h 06m 01.3s , +09d 23' 25.0" }
+/- 1.74048997619557 [arcmin] (estimated 90% radius based on SNR)
+/- 0.750723497980808 [arcmin] (formal 1-sigma fit error)
SNR: 13.7816721276957
Angular difference between the analysis and refined position is 0.4236 arcmin
Partial Coding Fraction: 0.04492188 [ including projection effects ]
Duration
T90: 15.9999998807907 +/- 5.27495512093061
Measured from: -2.1360000371933
to: 13.8639998435974 [s; relative to TRIGTIME]
T50: 6.52799987792969 +/- 2.0339517767937
Measured from: 1.19200003147125
to: 7.71999990940094 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 4.69200003147125
to: 5.69200003147125 [s; relative to TRIGTIME]
Total Fluence
Measured from: -4.82400000095367
to: 23.3999999761581 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.669658 3.111241 3.121640 1.166648
0.205915 0.234521 0.221021 0.174580 [error]
Peak 0.189556 0.365042 0.349911 0.193793
0.046523 0.060386 0.060212 0.047334 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 28.224 -4.824 23.400
T90 16.000 -2.136 13.864
T50 6.528 1.192 7.720
Peak 1.000 4.692 5.692
====== 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 -1.318 -0.127 0.128 - - - 2.33e-02 -1.81e-03 1.81e-03 48.410 57
CPL -0.772 -0.492 0.553 128.938 -38.683 484.452 4.12e-02 -1.62e-02 3.02e-02 44.770 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 -1.244 -0.281 0.285 - - - 6.93e-02 -1.25e-02 1.25e-02 50.920 57
CPL -0.110 -1.248 2.011 84.859 -26.885 -84.859 2.59e-01 -2.59e-01 2.18e+00 49.100 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 7.09e-07 1.46e-06 2.34e-06 8.38e-06 6.48e-06 1.29e-05 erg/cm2
90%_error_low -1.01e-07 -1.31e-07 -2.08e-07 -1.51e-06 -5.28e-07 -1.65e-06 erg/cm2
90%_error_hi 1.05e-07 1.30e-07 2.07e-07 1.70e-06 5.29e-07 1.81e-06 erg/cm2
Peak flux PL 4.10e-04 5.12e-03 5.00e-02 4.99e+00 2.62e-01 4.99e+00 ph/cm2/s
90%_error_low -7.33e-05 -9.49e-04 -2.87e-03 -8.98e-01 -4.79e-02 -8.44e-01 ph/cm2/s
90%_error_hi 7.09e-04 7.19e-03 7.33e-02 3.68e+00 2.64e-01 3.86e+00 ph/cm2/s
Fluence CPL 6.23e-07 1.52e-06 2.50e-06 4.53e-06 6.39e-06 9.17e-06 erg/cm2
90%_error_low -1.23e-07 -1.46e-07 -2.53e-07 -1.82e-06 -5.42e-07 -1.86e-06 erg/cm2
90%_error_hi 1.28e-07 1.49e-07 2.59e-07 3.38e-06 5.42e-07 3.32e-06 erg/cm2
Peak flux CPL 1.84e+00 2.95e+00 2.47e+00 1.12e+00 8.03e+00 8.38e+00 ph/cm2/s
90%_error_low -8.21e-01 -6.83e-01 -5.73e-01 -1.12e+00 -1.54e+00 -1.78e+00 ph/cm2/s
90%_error_hi 8.64e-01 7.35e-01 6.01e-01 2.51e+00 1.53e+00 2.86e+00 ph/cm2/s
======================================================================
Special notes of this burst