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 Jan 22 20:52:03 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger151131
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Trigger: 00151131 Segment: 000
BAT Trigger Time: 146161434.816 [s; MET]
Trigger Stop: 146161461.696 [s; MET]
UTC: 2005-08-19T16:23:55.132880 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 358.735497383504 Dec: 24.8535340564834 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.79
Image Trigger?: NO
Rate S/N Ratio: 9.9498743710662 [ if not an image trigger ]
Image S/N Ratio: 8.79
Analysis Position: [ source = BAT ]
RA: 358.735497383504 Dec: 24.8535340564834 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 358.751657545976 Dec: 24.8705118605285 [deg; J2000]
{ 23h 55m 00.4s , +24d 52' 13.8" }
+/- 2.0651053722736 [arcmin] (estimated 90% radius based on SNR)
+/- 0.83206117663201 [arcmin] (formal 1-sigma fit error)
SNR: 10.7944601618508
Angular difference between the analysis and refined position is 1.345973 arcmin
Partial Coding Fraction: 0.765625 [ including projection effects ]
Duration
T90: 37.7159999907017 +/- 7.33119826972135
Measured from: -3.32800000905991
to: 34.3879999816418 [s; relative to TRIGTIME]
T50: 18.2520000040531 +/- 5.40635663989368
Measured from: 5.3759999871254
to: 23.6279999911785 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 9.50399997830391
to: 10.5039999783039 [s; relative to TRIGTIME]
Total Fluence
Measured from: -7.216000020504
to: 40.0839999914169 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.395149 0.340908 0.044823 0.013295
0.034391 0.035265 0.030030 0.025407 [error]
Peak 0.018571 0.015891 0.009983 0.011320
0.004916 0.005094 0.004321 0.003732 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 47.300 -7.216 40.084
T90 37.716 -3.328 34.388
T50 18.252 5.376 23.628
Peak 1.000 9.504 10.504
====== 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 -2.637 -0.294 0.262 - - - 7.06e-04 -1.57e-04 1.59e-04 48.070 57
CPL -0.488 -1.363 2.070 23.318 -21.372 6.050 1.81e-02 -1.81e-02 4.41e-01 41.350 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 -1.817 -0.717 0.609 - - - 2.85e-03 -1.16e-03 1.02e-03 56.560 57
CPL -2.077 -1.310 1.082 31.455 N/A N/A 1.95e-03 N/A N/A 55.950 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 1.26e-07 1.17e-07 7.50e-08 7.43e-08 3.48e-07 3.92e-07 erg/cm2
90%_error_low -1.78e-08 -1.76e-08 -2.14e-08 -3.32e-08 -5.33e-08 -7.18e-08 erg/cm2
90%_error_hi 1.79e-08 1.72e-08 2.38e-08 4.87e-08 5.59e-08 8.32e-08 erg/cm2
Peak flux PL 1.59e-01 1.33e-01 7.54e-02 6.34e-02 3.95e-01 4.31e-01 ph/cm2/s
90%_error_low -7.17e-02 -3.93e-02 -3.86e-02 -4.64e-02 -1.17e-01 -1.31e-01 ph/cm2/s
90%_error_hi 7.68e-02 3.92e-02 3.81e-02 8.93e-02 1.17e-01 1.33e-01 ph/cm2/s
Fluence CPL 1.19e-07 1.39e-07 4.52e-08 2.49e-09 3.05e-07 3.05e-07 erg/cm2
90%_error_low -2.00e-08 -2.37e-08 -2.46e-08 N/A -4.54e-08 -4.56e-08 erg/cm2
90%_error_hi 1.96e-08 2.43e-08 3.16e-08 N/A 5.24e-08 5.45e-08 erg/cm2
Peak flux CPL 1.45e-01 1.06e-01 5.58e-02 4.92e-02 3.98e-01 4.35e-01 ph/cm2/s
90%_error_low N/A -5.98e-02 -3.15e-02 -2.83e-02 -1.20e-01 -1.37e-01 ph/cm2/s
90%_error_hi N/A 6.04e-02 2.73e-02 2.13e-02 1.14e-01 1.15e-01 ph/cm2/s
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