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 18:04:05 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger767284
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Trigger: 00767284 Segment: 000
BAT Trigger Time: 524095320.576 [s; MET]
Trigger Stop: 524095321.6 [s; MET]
UTC: 2017-08-10T22:01:41.068460 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 187.950444369931 Dec: 3.64679568014333 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.65
Image Trigger?: NO
Rate S/N Ratio: 23.3238075793812 [ if not an image trigger ]
Image S/N Ratio: 9.65
Analysis Position: [ source = BAT ]
RA: 187.950444369931 Dec: 3.64679568014333 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 187.928317316525 Dec: 3.6653131335646 [deg; J2000]
{ 12h 31m 42.8s , +03d 39' 55.1" }
+/- 0.985284551288413 [arcmin] (estimated 90% radius based on SNR)
+/- 0.282370755904764 [arcmin] (formal 1-sigma fit error)
SNR: 31.0681926494546
Angular difference between the analysis and refined position is 1.729116 arcmin
Partial Coding Fraction: 0.9375 [ including projection effects ]
Duration
T90: 152.419999957085 +/- 21.4978838612162
Measured from: -17.7759999632835
to: 134.643999993801 [s; relative to TRIGTIME]
T50: 75.3639999628067 +/- 8.12083078420974
Measured from: 7.03600001335144
to: 82.3999999761581 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.15200001001358
to: 1.15200001001358 [s; relative to TRIGTIME]
Total Fluence
Measured from: -24.3319999575615
to: 157.740000009537 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.648225 2.520860 2.180564 0.680986
0.078790 0.083031 0.074593 0.066011 [error]
Peak 0.023931 0.057249 0.053393 0.041267
0.006309 0.007224 0.006861 0.005859 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 182.072 -24.332 157.740
T90 152.420 -17.776 134.644
T50 75.364 7.036 82.400
Peak 1.000 0.152 1.152
====== 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 -1.227 -0.070 0.070 - - - 2.57e-03 -9.32e-05 9.32e-05 61.220 57
CPL -1.227 -0.066 0.128 9999.360 -9999.360 -9999.360 2.58e-03 -9.33e-05 1.97e-04 61.340 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 -0.644 -0.242 0.267 - - - 1.05e-02 -1.55e-03 1.49e-03 87.300 57
CPL -0.641 -0.240 0.344 9999.340 -9999.340 -9999.340 1.06e-02 -1.43e-03 5.43e-03 87.340 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 4.62e-07 1.00e-06 1.72e-06 6.76e-06 4.71e-06 9.94e-06 erg/cm2
90%_error_low -3.53e-08 -4.44e-08 -7.41e-08 -6.71e-07 -1.86e-07 -7.08e-07 erg/cm2
90%_error_hi 3.63e-08 4.42e-08 7.38e-08 7.24e-07 1.86e-07 7.54e-07 erg/cm2
Peak flux PL 1.91e-01 3.22e-01 4.12e-01 1.06e+00 1.22e+00 1.98e+00 ph/cm2/s
90%_error_low -5.98e-02 -6.53e-02 -5.18e-02 -2.81e-01 -1.62e-01 -2.93e-01 ph/cm2/s
90%_error_hi 6.76e-02 6.36e-02 5.17e-02 3.58e-01 1.62e-01 3.27e-01 ph/cm2/s
Fluence CPL 4.62e-07 1.00e-06 1.72e-06 6.72e-06 4.73e-06 1.00e-05 erg/cm2
90%_error_low -3.53e-08 -4.45e-08 -7.42e-08 N/A -2.11e-07 -1.53e-06 erg/cm2
90%_error_hi 3.63e-08 4.40e-08 7.39e-08 N/A 1.61e-07 2.03e-07 erg/cm2
Peak flux CPL 1.91e-01 3.22e-01 4.12e-01 1.05e+00 1.22e+00 2.06e+00 ph/cm2/s
90%_error_low N/A -6.54e-02 N/A N/A -1.62e-01 -6.50e-01 ph/cm2/s
90%_error_hi N/A 6.37e-02 N/A N/A 1.62e-01 3.46e-01 ph/cm2/s
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