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 20 12:10:49 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger254532
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Trigger: 00254532 Segment: 000
BAT Trigger Time: 189550001.088 [s; MET]
Trigger Stop: 189550001.6 [s; MET]
UTC: 2007-01-03T20:46:39.412140 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 352.557389445908 Dec: 26.8755363387016 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.86
Image Trigger?: NO
Rate S/N Ratio: 17.2336879396141 [ if not an image trigger ]
Image S/N Ratio: 9.86
Analysis Position: [ source = BAT ]
RA: 352.557389445908 Dec: 26.8755363387016 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 352.56854193373 Dec: 26.821974636184 [deg; J2000]
{ 23h 30m 16.5s , +26d 49' 19.1" }
+/- 2.31156421764552 [arcmin] (estimated 90% radius based on SNR)
+/- 1.29814343159752 [arcmin] (formal 1-sigma fit error)
SNR: 9.18867134950623
Angular difference between the analysis and refined position is 3.268686 arcmin
Partial Coding Fraction: 0.84375 [ including projection effects ]
Duration
T90: 18.4079999923706 +/- 1.21269449867353
Measured from: 0.180000007152557
to: 18.5879999995232 [s; relative to TRIGTIME]
T50: 12.272000014782 +/- 5.84761043906061
Measured from: 2.24799999594688
to: 14.5200000107288 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.113999992609024
to: 0.886000007390976 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.104000002145767
to: 19.419999986887 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.225876 0.248903 0.116137 0.012421
0.022672 0.023408 0.020512 0.018177 [error]
Peak 0.044314 0.051026 0.022973 -0.000730
0.005576 0.005915 0.005128 0.004350 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 19.524 -0.104 19.420
T90 18.408 0.180 18.588
T50 12.272 2.248 14.520
Peak 1.000 -0.114 0.886
====== 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 -1.894 -0.208 0.198 - - - 1.83e-03 -2.55e-04 2.50e-04 48.650 57
CPL -1.223 -0.824 1.067 46.633 -41.693 -46.633 4.59e-03 -2.90e-03 1.56e-02 46.830 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 -1.871 -0.241 0.226 - - - 7.40e-03 -1.22e-03 1.19e-03 70.600 57
CPL -0.135 -1.274 1.647 43.645 -7.760 16.520 7.65e-02 -7.65e-02 6.26e-01 64.770 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 6.63e-08 9.59e-08 1.03e-07 2.07e-07 3.29e-07 4.72e-07 erg/cm2
90%_error_low -1.01e-08 -1.06e-08 -1.92e-08 -6.73e-08 -4.44e-08 -9.06e-08 erg/cm2
90%_error_hi 1.03e-08 1.06e-08 1.97e-08 8.65e-08 4.56e-08 1.06e-07 erg/cm2
Peak flux PL 4.35e-01 3.52e-01 1.92e-01 1.54e-01 1.05e+00 1.13e+00 ph/cm2/s
90%_error_low -7.87e-02 -4.66e-02 -4.06e-02 -5.41e-02 -1.38e-01 -1.54e-01 ph/cm2/s
90%_error_hi 8.14e-02 4.65e-02 4.14e-02 6.93e-02 1.38e-01 1.55e-01 ph/cm2/s
Fluence CPL 6.34e-08 1.04e-07 9.81e-08 6.29e-08 3.03e-07 3.28e-07 erg/cm2
90%_error_low -1.11e-08 -1.47e-08 -2.52e-08 -4.85e-08 -5.12e-08 -7.28e-08 erg/cm2
90%_error_hi 1.10e-08 1.54e-08 2.25e-08 1.68e-07 5.52e-08 1.73e-07 erg/cm2
Peak flux CPL 3.73e-01 4.25e-01 1.80e-01 2.21e-02 9.97e-01 9.99e-01 ph/cm2/s
90%_error_low -9.52e-02 -6.95e-02 -5.40e-02 -2.21e-02 -1.41e-01 -1.42e-01 ph/cm2/s
90%_error_hi 9.51e-02 7.17e-02 5.18e-02 6.35e-02 1.42e-01 1.48e-01 ph/cm2/s
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