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.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Fri Jan 17 16:47:06 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger431128
======================================================================
Trigger: 00431128 Segment: 000
BAT Trigger Time: 302865199.68 [s; MET]
Trigger Stop: 302865200.704 [s; MET]
UTC: 2010-08-07T09:13:13.622520 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 55.324189348915 Dec: 67.6787633437716 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.13
Image Trigger?: NO
Rate S/N Ratio: 15.3297097167559 [ if not an image trigger ]
Image S/N Ratio: 9.13
Analysis Position: [ source = BAT ]
RA: 55.324189348915 Dec: 67.6787633437716 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 55.2995122773925 Dec: 67.6648710966458 [deg; J2000]
{ 03h 41m 11.9s , +67d 39' 53.5" }
+/- 1.80938584818832 [arcmin] (estimated 90% radius based on SNR)
+/- 0.773966194921213 [arcmin] (formal 1-sigma fit error)
SNR: 13.0381712529179
Angular difference between the analysis and refined position is 1.005581 arcmin
Partial Coding Fraction: 0.3710938 [ including projection effects ]
Duration
T90: 7.74400001764297 +/- 1.43822114437232
Measured from: -5.18400001525879
to: 2.56000000238419 [s; relative to TRIGTIME]
T50: 2.75199997425079 +/- 1.11771195772738
Measured from: -2.17599999904633
to: 0.575999975204468 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.340000033378601
to: 0.659999966621399 [s; relative to TRIGTIME]
Total Fluence
Measured from: -6.0799999833107
to: 3.13599997758865 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.274524 0.270979 0.093802 0.032216
0.025555 0.026140 0.022505 0.019499 [error]
Peak 0.060233 0.087174 0.058129 0.014330
0.009229 0.009676 0.008161 0.006682 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 9.216 -6.080 3.136
T90 7.744 -5.184 2.560
T50 2.752 -2.176 0.576
Peak 1.000 -0.340 0.660
====== 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 -2.321 -0.243 0.224 - - - 3.80e-03 -6.49e-04 6.36e-04 49.100 57
CPL -1.604 -0.411 1.677 20.015 N/A N/A 1.07e-02 N/A N/A 47.950 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 -1.627 -0.211 0.206 - - - 1.41e-02 -1.87e-03 1.85e-03 57.320 57
CPL -0.865 -0.819 1.005 72.858 -20.108 -72.858 3.50e-02 -2.14e-02 7.84e-02 54.820 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 9.72e-08 1.09e-07 8.71e-08 1.16e-07 3.36e-07 4.09e-07 erg/cm2
90%_error_low -1.39e-08 -1.31e-08 -1.97e-08 -4.36e-08 -4.58e-08 -7.21e-08 erg/cm2
90%_error_hi 1.42e-08 1.29e-08 2.08e-08 5.89e-08 4.72e-08 8.34e-08 erg/cm2
Peak flux PL 6.54e-01 6.11e-01 3.96e-01 3.96e-01 1.82e+00 2.06e+00 ph/cm2/s
90%_error_low -1.29e-01 -8.02e-02 -6.57e-02 -1.16e-01 -2.34e-01 -2.61e-01 ph/cm2/s
90%_error_hi 1.35e-01 7.97e-02 6.51e-02 1.40e-01 2.34e-01 2.62e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -1.39e-08 -1.31e-08 -1.97e-08 -4.36e-08 -4.58e-08 -7.21e-08 erg/cm2
90%_error_hi 1.42e-08 1.29e-08 2.08e-08 5.89e-08 4.72e-08 8.34e-08 erg/cm2
Peak flux CPL 5.80e-01 6.62e-01 4.21e-01 1.83e-01 1.78e+00 1.85e+00 ph/cm2/s
90%_error_low -1.53e-01 -9.79e-02 -7.46e-02 -1.06e-01 -2.39e-01 -2.69e-01 ph/cm2/s
90%_error_hi 1.57e-01 1.02e-01 7.67e-02 2.48e-01 2.39e-01 3.15e-01 ph/cm2/s
======================================================================
Special notes of this burst