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: Mon Aug 6 18:35:29 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger846395
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Trigger: 00846395 Segment: 000
BAT Trigger Time: 552558301.632 [s; MET]
Trigger Stop: 552558303.68 [s; MET]
UTC: 2018-07-06T08:24:40.412760 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 181.665199303239 Dec: 66.0347153838887 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.89
Image Trigger?: NO
Rate S/N Ratio: 14.3527000944073 [ if not an image trigger ]
Image S/N Ratio: 8.89
Analysis Position: [ source = BAT ]
RA: 181.665199303239 Dec: 66.0347153838887 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 181.682590515597 Dec: 66.0447592756642 [deg; J2000]
{ 12h 06m 43.8s , +66d 02' 41.1" }
+/- 1.01694053934579 [arcmin] (estimated 90% radius based on SNR)
+/- 0.282537722573893 [arcmin] (formal 1-sigma fit error)
SNR: 29.6958766673408
Angular difference between the analysis and refined position is 0.736707 arcmin
Partial Coding Fraction: 0.8671875 [ including projection effects ]
Duration
T90: 42.444000005722 +/- 7.16259732479527
Measured from: -2.11199998855591
to: 40.3320000171661 [s; relative to TRIGTIME]
T50: 20.7359999418259 +/- 10.505770698851
Measured from: 9.58800005912781
to: 30.3240000009537 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 27.8240000009537
to: 28.8240000009537 [s; relative to TRIGTIME]
Total Fluence
Measured from: -15.9199999570847
to: 51.1679999828339 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.562277 1.721259 0.919751 0.170411
0.052522 0.053928 0.045661 0.038157 [error]
Peak 0.119661 0.149393 0.097384 0.014588
0.007958 0.008518 0.007624 0.005079 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 67.088 -15.920 51.168
T90 42.444 -2.112 40.332
T50 20.736 9.588 30.324
Peak 1.000 27.824 28.824
====== 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 -1.909 -0.080 0.079 - - - 3.87e-03 -1.74e-04 1.73e-04 57.690 57
CPL -1.519 -0.317 0.344 57.022 -10.580 46.123 6.21e-03 -1.95e-03 3.16e-03 53.210 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: CPL)
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 -1.703 -0.117 0.114 - - - 2.37e-02 -1.73e-03 1.72e-03 54.160 57
CPL -0.995 -0.481 0.542 67.048 -12.535 43.133 5.61e-02 -2.45e-02 5.14e-02 47.520 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 4.87e-07 6.98e-07 7.43e-07 1.47e-06 2.39e-06 3.40e-06 erg/cm2
90%_error_low -3.29e-08 -2.85e-08 -4.61e-08 -1.84e-07 -1.05e-07 -2.25e-07 erg/cm2
90%_error_hi 3.36e-08 2.85e-08 4.63e-08 2.02e-07 1.06e-07 2.38e-07 erg/cm2
Peak flux PL 1.18e+00 1.06e+00 6.49e-01 6.05e-01 3.14e+00 3.49e+00 ph/cm2/s
90%_error_low -1.22e-01 -7.17e-02 -6.11e-02 -1.05e-01 -2.12e-01 -2.35e-01 ph/cm2/s
90%_error_hi 1.26e-01 7.15e-02 6.09e-02 1.17e-01 2.12e-01 2.35e-01 ph/cm2/s
Fluence CPL 4.59e-07 7.23e-07 7.44e-07 7.97e-07 2.30e-06 2.72e-06 erg/cm2
90%_error_low -3.97e-08 -3.48e-08 -4.90e-08 -2.91e-07 -1.27e-07 -3.23e-07 erg/cm2
90%_error_hi 4.02e-08 3.53e-08 4.89e-08 4.99e-07 1.28e-07 5.13e-07 erg/cm2
Peak flux CPL 1.06e+00 1.14e+00 6.76e-01 2.80e-01 3.06e+00 3.16e+00 ph/cm2/s
90%_error_low -1.46e-01 -8.98e-02 -6.86e-02 -1.13e-01 -2.20e-01 -2.53e-01 ph/cm2/s
90%_error_hi 1.48e-01 9.18e-02 6.93e-02 1.87e-01 2.19e-01 2.78e-01 ph/cm2/s
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