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 Jan 13 22:00:48 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger456939
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Trigger: 00456939 Segment: 000
BAT Trigger Time: 331917876.288 [s; MET]
Trigger Stop: 331917877.312 [s; MET]
UTC: 2011-07-09T15:24:29.148680 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 238.89550647638 Dec: 40.8976448151732 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 18.12
Image Trigger?: NO
Rate S/N Ratio: 108.52649446103 [ if not an image trigger ]
Image S/N Ratio: 18.12
Analysis Position: [ source = BAT ]
RA: 238.89550647638 Dec: 40.8976448151732 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 238.894804457077 Dec: 40.9184617549466 [deg; J2000]
{ 15h 55m 34.8s , +40d 55' 06.5" }
+/- 0.518533347412532 [arcmin] (estimated 90% radius based on SNR)
+/- 0.138303340410033 [arcmin] (formal 1-sigma fit error)
SNR: 77.7284932717575
Angular difference between the analysis and refined position is 1.249422 arcmin
Partial Coding Fraction: 0.9140625 [ including projection effects ]
Duration
T90: 44.3279999494553 +/- 0.542070084896921
Measured from: -0.564000010490417
to: 43.7639999389648 [s; relative to TRIGTIME]
T50: 27.4439999461174 +/- 0.229120056090684
Measured from: 6.82400000095367
to: 34.2679999470711 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 34.2480000257492
to: 35.2480000257492 [s; relative to TRIGTIME]
Total Fluence
Measured from: -4.2960000038147
to: 56.4760000109673 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.379927 5.342922 4.724045 1.407962
0.051547 0.056836 0.053606 0.042741 [error]
Peak 0.184746 0.303154 0.222671 0.051087
0.008238 0.009785 0.008983 0.006040 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 60.772 -4.296 56.476
T90 44.328 -0.564 43.764
T50 27.444 6.824 34.268
Peak 1.000 34.248 35.248
====== 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 -1.232 -0.031 0.031 - - - 1.63e-02 -2.71e-04 2.70e-04 41.680 57
CPL -1.180 -0.063 0.086 966.079 -966.079 -966.079 1.71e-02 -1.02e-03 1.21e-03 42.100 56
=== 1-s peak 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 -1.374 -0.069 0.069 - - - 4.92e-02 -1.94e-03 1.94e-03 61.260 57
CPL -0.985 -0.272 0.291 136.545 -37.542 179.793 7.60e-02 -1.95e-02 2.85e-02 55.140 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 9.85e-07 2.13e-06 3.63e-06 1.42e-05 9.97e-06 2.10e-05 erg/cm2
90%_error_low -3.68e-08 -4.63e-08 -6.30e-08 -5.99e-07 -1.62e-07 -6.14e-07 erg/cm2
90%_error_hi 3.74e-08 4.62e-08 6.29e-08 6.18e-07 1.62e-07 6.30e-07 erg/cm2
Peak flux PL 1.79e+00 1.95e+00 1.50e+00 1.90e+00 5.96e+00 7.14e+00 ph/cm2/s
90%_error_low -1.27e-01 -8.50e-02 -7.25e-02 -1.85e-01 -2.39e-01 -2.88e-01 ph/cm2/s
90%_error_hi 1.30e-01 8.47e-02 7.22e-02 1.97e-01 2.39e-01 2.89e-01 ph/cm2/s
Fluence CPL 9.84e-07 2.13e-06 3.64e-06 1.42e-05 9.97e-06 2.02e-05 erg/cm2
90%_error_low -3.67e-08 -4.31e-08 -6.23e-08 -1.92e-06 -1.58e-07 -1.18e-06 erg/cm2
90%_error_hi 2.64e-08 3.36e-08 6.22e-08 3.72e-07 1.61e-07 8.22e-07 erg/cm2
Peak flux CPL 1.66e+00 2.01e+00 1.56e+00 1.25e+00 5.85e+00 6.47e+00 ph/cm2/s
90%_error_low -1.56e-01 -9.62e-02 -8.30e-02 -3.07e-01 -2.50e-01 -4.06e-01 ph/cm2/s
90%_error_hi 1.59e-01 9.73e-02 8.40e-02 4.24e-01 2.50e-01 4.85e-01 ph/cm2/s
======================================================================