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: Sun Jan 19 23:10:40 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger323870
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Trigger: 00323870 Segment: 000
BAT Trigger Time: 242308738.048 [s; MET]
Trigger Stop: 242308738.304 [s; MET]
UTC: 2008-09-05T11:58:54.973940 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 287.661676067797 Dec: -18.8772722987606 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.87
Image Trigger?: NO
Rate S/N Ratio: 29.0344622819159 [ if not an image trigger ]
Image S/N Ratio: 6.87
Analysis Position: [ source = BAT ]
RA: 287.661676067797 Dec: -18.8772722987606 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 287.667070239253 Dec: -18.8666914609386 [deg; J2000]
{ 19h 10m 40.1s , -18d 52' 00.1" }
+/- 2.08491945537207 [arcmin] (estimated 90% radius based on SNR)
+/- 0.764992847180635 [arcmin] (formal 1-sigma fit error)
SNR: 10.6482085549777
Angular difference between the analysis and refined position is 0.704858 arcmin
Partial Coding Fraction: 0.5625 [ including projection effects ]
Duration
T90: 1.01600003242493 +/- 0.0815843255901954
Measured from: 0.0479999780654907
to: 1.06400001049042 [s; relative to TRIGTIME]
T50: 0.768000036478043 +/- 0.120000004768375
Measured from: 0.179999977350235
to: 0.948000013828278 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.0399999916553497
to: 1.03999999165535 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.0399999916553497
to: 1.12799999117851 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.011610 0.062965 0.065322 0.036225
0.007346 0.008028 0.007953 0.007170 [error]
Peak 0.009954 0.056345 0.058198 0.034752
0.007015 0.007665 0.007648 0.006936 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 1.088 0.040 1.128
T90 1.016 0.048 1.064
T50 0.768 0.180 0.948
Peak 1.000 0.040 1.040
====== 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 -0.795 -0.233 0.251 - - - 1.10e-02 -1.63e-03 1.59e-03 50.300 57
CPL -0.627 -0.623 1.037 500.017 -500.017 -500.017 1.30e-02 -3.09e-03 2.08e-02 50.200 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 -0.738 -0.250 0.273 - - - 1.07e-02 -1.72e-03 1.67e-03 49.120 57
CPL -0.641 -0.328 1.090 870.906 -870.906 -870.906 1.17e-02 -2.21e-03 1.96e-02 49.090 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 7.96e-09 2.26e-08 5.21e-08 3.24e-07 1.41e-07 4.07e-07 erg/cm2
90%_error_low -2.34e-09 -4.29e-09 -7.01e-09 -9.13e-08 -1.91e-08 -9.43e-08 erg/cm2
90%_error_hi 2.63e-09 4.21e-09 6.97e-09 1.17e-07 1.91e-08 1.17e-07 erg/cm2
Peak flux PL 2.13e-01 3.39e-01 4.06e-01 9.51e-01 1.23e+00 1.91e+00 ph/cm2/s
90%_error_low -6.91e-02 -7.30e-02 -5.67e-02 -2.61e-01 -1.85e-01 -2.91e-01 ph/cm2/s
90%_error_hi 7.92e-02 7.21e-02 5.65e-02 3.27e-01 1.87e-01 3.11e-01 ph/cm2/s
Fluence CPL 7.59e-09 2.28e-08 5.33e-08 2.63e-07 1.40e-07 3.46e-07 erg/cm2
90%_error_low -2.90e-09 -4.41e-09 -7.91e-09 -1.70e-07 -1.97e-08 -1.68e-07 erg/cm2
90%_error_hi 2.60e-09 4.53e-09 9.27e-09 9.09e-08 1.89e-08 9.11e-08 erg/cm2
Peak flux CPL 2.07e-01 3.40e-01 4.12e-01 8.66e-01 1.23e+00 1.82e+00 ph/cm2/s
90%_error_low -8.67e-02 -7.40e-02 -6.14e-02 -4.98e-01 -1.87e-01 -5.37e-01 ph/cm2/s
90%_error_hi 6.99e-02 7.46e-02 7.78e-02 3.91e-01 1.88e-01 3.66e-01 ph/cm2/s
======================================================================