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 28 18:08:17 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger766821
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Trigger: 00766821 Segment: 000
BAT Trigger Time: 523835788.608 [s; MET]
Trigger Stop: 523835789.12 [s; MET]
UTC: 2017-08-07T21:56:09.115840 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 143.379449689179 Dec: -17.3293730191527 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.17
Image Trigger?: NO
Rate S/N Ratio: 14.247806848775 [ if not an image trigger ]
Image S/N Ratio: 7.17
Analysis Position: [ source = BAT ]
RA: 143.379449689179 Dec: -17.3293730191527 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 143.433398615419 Dec: -17.3478077800731 [deg; J2000]
{ 09h 33m 44.0s , -17d 20' 52.1" }
+/- 1.52125162759394 [arcmin] (estimated 90% radius based on SNR)
+/- 0.652205832713866 [arcmin] (formal 1-sigma fit error)
SNR: 16.704410627956
Angular difference between the analysis and refined position is 3.281859 arcmin
Partial Coding Fraction: 0.921875 [ including projection effects ]
Duration
T90: 36.323999941349 +/- 7.97291137847716
Measured from: 0.164000034332275
to: 36.4879999756813 [s; relative to TRIGTIME]
T50: 28.4119999408722 +/- 7.53834567873316
Measured from: 1.9200000166893
to: 30.3319999575615 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.700000047683716
to: 1.70000004768372 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.435999989509583
to: 52.2319999933243 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.515886 0.638487 0.340486 0.042848
0.043118 0.043779 0.037046 0.031474 [error]
Peak 0.054651 0.070699 0.051889 0.015181
0.006725 0.007077 0.006197 0.004729 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 52.668 -0.436 52.232
T90 36.324 0.164 36.488
T50 28.412 1.920 30.332
Peak 1.000 0.700 1.700
====== 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 -1.816 -0.150 0.145 - - - 1.74e-03 -1.66e-04 1.64e-04 65.680 57
CPL -0.983 -0.631 0.755 52.678 -9.961 33.967 5.12e-03 -2.82e-03 8.55e-03 60.350 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 -1.496 -0.189 0.187 - - - 1.17e-02 -1.34e-03 1.32e-03 61.020 57
CPL -1.380 -0.723 0.685 246.342 -246.342 -246.342 1.34e-02 -5.60e-03 1.68e-02 60.920 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 1.58e-07 2.39e-07 2.71e-07 5.87e-07 8.43e-07 1.26e-06 erg/cm2
90%_error_low -1.89e-08 -1.94e-08 -3.49e-08 -1.40e-07 -8.10e-08 -1.78e-07 erg/cm2
90%_error_hi 1.94e-08 1.95e-08 3.53e-08 1.66e-07 8.24e-08 1.98e-07 erg/cm2
Peak flux PL 4.79e-01 4.83e-01 3.43e-01 3.87e-01 1.46e+00 1.69e+00 ph/cm2/s
90%_error_low -8.43e-02 -5.49e-02 -4.98e-02 -1.03e-01 -1.59e-01 -1.89e-01 ph/cm2/s
90%_error_hi 8.78e-02 5.45e-02 4.93e-02 1.23e-01 1.59e-01 1.91e-01 ph/cm2/s
Fluence CPL 1.45e-07 2.63e-07 2.65e-07 1.64e-07 7.75e-07 8.37e-07 erg/cm2
90%_error_low -2.17e-08 -2.64e-08 -4.20e-08 -9.79e-08 -9.14e-08 -1.36e-07 erg/cm2
90%_error_hi 2.18e-08 2.74e-08 4.00e-08 2.47e-07 9.53e-08 2.59e-07 erg/cm2
Peak flux CPL 4.71e-01 4.90e-01 3.46e-01 3.30e-01 1.45e+00 1.64e+00 ph/cm2/s
90%_error_low -9.44e-02 -6.00e-02 -5.18e-02 -1.85e-01 -1.61e-01 -2.53e-01 ph/cm2/s
90%_error_hi 8.06e-02 6.61e-02 5.35e-02 7.22e-02 1.61e-01 2.34e-01 ph/cm2/s
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