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 16:37:24 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger431764
======================================================================
Trigger: 00431764 Segment: 000
BAT Trigger Time: 303611877.44 [s; MET]
Trigger Stop: 303611878.464 [s; MET]
UTC: 2010-08-16T00:37:51.355600 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 351.740552447025 Dec: 26.5605486062231 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 22.91
Image Trigger?: NO
Rate S/N Ratio: 132.064378240311 [ if not an image trigger ]
Image S/N Ratio: 22.91
Analysis Position: [ source = BAT ]
RA: 351.740552447025 Dec: 26.5605486062231 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 351.737735841043 Dec: 26.5679362735523 [deg; J2000]
{ 23h 26m 57.1s , +26d 34' 04.6" }
+/- 0.786757469848827 [arcmin] (estimated 90% radius based on SNR)
+/- 0.220533218505534 [arcmin] (formal 1-sigma fit error)
SNR: 42.8466754598649
Angular difference between the analysis and refined position is 0.468324 arcmin
Partial Coding Fraction: 0.3398438 [ including projection effects ]
Duration
T90: 2.88399994373322 +/- 0.625139935430045
Measured from: -0.307999968528748
to: 2.57599997520447 [s; relative to TRIGTIME]
T50: 1.0239999294281 +/- 0.0688186099521425
Measured from: 0.15200001001358
to: 1.17599993944168 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.10400003194809
to: 1.10400003194809 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.708000004291534
to: 4.51999998092651 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.526428 0.940396 0.972800 0.253720
0.024470 0.028305 0.027961 0.019795 [error]
Peak 0.230341 0.470092 0.503796 0.136627
0.013165 0.017006 0.017565 0.011377 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 5.228 -0.708 4.520
T90 2.884 -0.308 2.576
T50 1.024 0.152 1.176
Peak 1.000 0.104 1.104
====== 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: 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 -1.165 -0.057 0.057 - - - 3.70e-02 -1.22e-03 1.22e-03 61.050 57
CPL -0.736 -0.229 0.241 172.191 -41.401 123.310 5.70e-02 -1.15e-02 1.51e-02 50.400 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 -1.063 -0.064 0.064 - - - 9.52e-02 -3.71e-03 3.71e-03 67.920 57
CPL -0.494 -0.261 0.277 153.042 -32.021 77.739 1.71e-01 -3.92e-02 5.42e-02 53.070 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 1.80e-07 4.07e-07 7.27e-07 3.05e-06 1.98e-06 4.37e-06 erg/cm2
90%_error_low -1.17e-08 -1.61e-08 -2.69e-08 -2.47e-07 -6.91e-08 -2.63e-07 erg/cm2
90%_error_hi 1.20e-08 1.60e-08 2.68e-08 2.61e-07 6.93e-08 2.74e-07 erg/cm2
Peak flux PL 7.08e-04 8.48e-03 1.23e-01 1.10e+01 5.74e-01 1.07e+01 ph/cm2/s
90%_error_low N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_hi N/A N/A N/A N/A N/A N/A ph/cm2/s
Fluence CPL 1.61e-07 4.18e-07 7.63e-07 1.84e-06 1.95e-06 3.18e-06 erg/cm2
90%_error_low -1.49e-08 -1.75e-08 -3.31e-08 -4.07e-07 -7.21e-08 -4.05e-07 erg/cm2
90%_error_hi 1.52e-08 1.76e-08 3.34e-08 5.51e-07 7.19e-08 5.44e-07 erg/cm2
Peak flux CPL 2.23e+00 3.49e+00 3.48e+00 3.31e+00 1.08e+01 1.25e+01 ph/cm2/s
90%_error_low -2.38e-01 -1.75e-01 -1.77e-01 -6.47e-01 -4.46e-01 -7.83e-01 ph/cm2/s
90%_error_hi 2.45e-01 1.77e-01 1.79e-01 8.35e-01 4.46e-01 9.15e-01 ph/cm2/s
======================================================================
Special notes of this burst