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: Wed May 30 15:50:02 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger821103
======================================================================
Trigger: 00821103 Segment: 000
BAT Trigger Time: 544355120 [s; MET]
Trigger Stop: 544355120.256 [s; MET]
UTC: 2018-04-02T09:44:59.279000 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 251.90471404867 Dec: -14.9635136172067 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.19
Image Trigger?: NO
Rate S/N Ratio: 50.5074251966976 [ if not an image trigger ]
Image S/N Ratio: 9.19
Analysis Position: [ source = BAT ]
RA: 251.90471404867 Dec: -14.9635136172067 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 251.923245940902 Dec: -14.9282173716536 [deg; J2000]
{ 16h 47m 41.6s , -14d 55' 41.6" }
+/- 1.9521785474164 [arcmin] (estimated 90% radius based on SNR)
+/- 1.29543885010673 [arcmin] (formal 1-sigma fit error)
SNR: 11.6974304440306
Angular difference between the analysis and refined position is 2.374676 arcmin
Partial Coding Fraction: 0.3789062 [ including projection effects ]
Duration
T90: 0.179999947547913 +/- 0.0312411001733173
Measured from: 0.0679999589920044
to: 0.247999906539917 [s; relative to TRIGTIME]
T50: 0.0999999046325684 +/- 0.0226273785602007
Measured from: 0.120000004768372
to: 0.21999990940094 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.340000033378601
to: 0.659999966621399 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.0520000457763672
to: 0.264000058174133 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.028493 0.040215 0.067162 0.034500
0.006277 0.007629 0.008051 0.007692 [error]
Peak 0.042393 0.063604 0.093849 0.025930
0.012298 0.012956 0.011833 0.010835 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.212 0.052 0.264
T90 0.180 0.068 0.248
T50 0.100 0.120 0.220
Peak 1.000 -0.340 0.660
====== 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: 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 -0.516 -0.289 0.317 - - - 4.96e-02 -8.50e-03 8.09e-03 55.800 57
CPL -0.413 -0.401 0.731 967.554 -967.554 -967.554 5.46e-02 -1.23e-02 3.64e-02 56.130 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 -0.878 -0.300 0.324 - - - 1.58e-02 -2.75e-03 2.68e-03 69.870 57
CPL -0.768 -0.407 1.182 681.428 -681.428 -681.428 1.76e-02 -4.22e-03 3.10e-02 69.910 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 5.39e-09 1.82e-08 5.10e-08 4.31e-07 1.40e-07 5.05e-07 erg/cm2
90%_error_low -1.92e-09 -4.14e-09 -7.43e-09 -1.43e-07 -2.16e-08 -1.46e-07 erg/cm2
90%_error_hi 2.25e-09 4.02e-09 7.37e-09 1.99e-07 2.17e-08 1.98e-07 erg/cm2
Peak flux PL 3.60e-01 5.26e-01 5.73e-01 1.17e+00 1.82e+00 2.63e+00 ph/cm2/s
90%_error_low -1.28e-01 -1.23e-01 -9.54e-02 -3.90e-01 -3.09e-01 -4.56e-01 ph/cm2/s
90%_error_hi 1.49e-01 1.20e-01 9.45e-02 5.19e-01 3.11e-01 4.92e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -1.92e-09 -4.14e-09 -7.43e-09 -1.43e-07 -2.16e-08 -1.46e-07 erg/cm2
90%_error_hi 2.25e-09 4.02e-09 7.37e-09 1.99e-07 2.17e-08 1.98e-07 erg/cm2
Peak flux CPL 3.62e-01 5.26e-01 5.72e-01 1.19e+00 1.82e+00 2.66e+00 ph/cm2/s
90%_error_low -1.77e-01 -1.23e-01 -9.46e-02 N/A -3.21e-01 -8.93e-01 ph/cm2/s
90%_error_hi 1.47e-01 1.20e-01 1.22e-01 N/A 3.08e-01 4.22e-01 ph/cm2/s
======================================================================
Special notes of this burst