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 Apr 5 17:30:51 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger814305
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Trigger: 00814305 Segment: 000
BAT Trigger Time: 542759037.568 [s; MET]
Trigger Stop: 542759038.592 [s; MET]
UTC: 2018-03-14T22:23:36.943440 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 297.866097981945 Dec: 23.6232874833055 [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: 6.6332495807108 [ if not an image trigger ]
Image S/N Ratio: 7.74
Analysis Position: [ source = BAT ]
RA: 297.866097981945 Dec: 23.6232874833055 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 297.858782792225 Dec: 23.6437538156809 [deg; J2000]
{ 19h 51m 26.1s , +23d 38' 37.5" }
+/- 1.9876312547135 [arcmin] (estimated 90% radius based on SNR)
+/- 0.701973818371764 [arcmin] (formal 1-sigma fit error)
SNR: 11.4005119818874
Angular difference between the analysis and refined position is 1.292137 arcmin
Partial Coding Fraction: 0.6640625 [ including projection effects ]
Duration
T90: 55.4240000247955 +/- 6.53960234232175
Measured from: -44.9279999732971
to: 10.4960000514984 [s; relative to TRIGTIME]
T50: 23.3919999599457 +/- 18.9169824036978
Measured from: -18.191999912262
to: 5.20000004768372 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.347999930381775
to: 0.652000069618225 [s; relative to TRIGTIME]
Total Fluence
Measured from: -51.1200000047684
to: 11.9359999895096 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.683231 0.646664 0.288378 -0.037625
0.074392 0.071904 0.060031 0.048489 [error]
Peak 0.061192 0.044882 0.032422 0.004851
0.010392 0.009564 0.007791 0.006060 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 63.056 -51.120 11.936
T90 55.424 -44.928 10.496
T50 23.392 -18.192 5.200
Peak 1.000 -0.348 0.652
====== 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 -2.346 -0.265 0.242 - - - 1.37e-03 -2.57e-04 2.52e-04 53.120 57
CPL -1.573 -0.427 1.313 20.724 N/A N/A 4.11e-03 N/A N/A 51.250 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 -2.210 -0.422 0.364 - - - 7.81e-03 -2.15e-03 2.04e-03 58.090 57
CPL -1.918 N/A N/A 12.474 N/A N/A 1.14e-02 N/A N/A 57.970 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 2.46e-07 2.71e-07 2.13e-07 2.77e-07 8.33e-07 1.01e-06 erg/cm2
90%_error_low -3.90e-08 -3.63e-08 -5.25e-08 -1.12e-07 -1.24e-07 -1.91e-07 erg/cm2
90%_error_hi 3.97e-08 3.58e-08 5.55e-08 1.54e-07 1.28e-07 2.20e-07 erg/cm2
Peak flux PL 6.39e-01 4.24e-01 1.83e-01 1.09e-01 1.30e+00 1.35e+00 ph/cm2/s
90%_error_low -1.67e-01 -8.31e-02 -6.38e-02 -5.84e-02 -2.51e-01 -2.61e-01 ph/cm2/s
90%_error_hi 1.75e-01 8.26e-02 6.58e-02 8.72e-02 2.51e-01 2.61e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -3.90e-08 -3.63e-08 -5.25e-08 -1.12e-07 -1.24e-07 -1.91e-07 erg/cm2
90%_error_hi 3.97e-08 3.58e-08 5.55e-08 1.54e-07 1.28e-07 2.20e-07 erg/cm2
Peak flux CPL 6.20e-01 4.38e-01 1.85e-01 7.97e-02 1.29e+00 1.32e+00 ph/cm2/s
90%_error_low N/A N/A -6.77e-02 -7.97e-02 -2.54e-01 N/A ph/cm2/s
90%_error_hi N/A N/A 6.91e-02 1.04e-01 2.48e-01 N/A ph/cm2/s
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