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: Sun Jan 19 17:53:54 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger348929
======================================================================
Trigger: 00348929 Segment: 000
BAT Trigger Time: 261075477.504 [s; MET]
Trigger Stop: 261075478.528 [s; MET]
UTC: 2009-04-10T16:57:52.856200 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 334.979821390126 Dec: 15.4711522547987 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.82
Image Trigger?: NO
Rate S/N Ratio: 12.2065556157337 [ if not an image trigger ]
Image S/N Ratio: 7.82
Analysis Position: [ source = BAT ]
RA: 334.979821390126 Dec: 15.4711522547987 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 334.958160889292 Dec: 15.4213946333319 [deg; J2000]
{ 22h 19m 50.0s , +15d 25' 17.0" }
+/- 1.73116817149227 [arcmin] (estimated 90% radius based on SNR)
+/- 0.59162943211542 [arcmin] (formal 1-sigma fit error)
SNR: 13.8878086686614
Angular difference between the analysis and refined position is 3.237620 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 165.148000001907 +/- 7.04306410648481
Measured from: -35.5640000104904
to: 129.583999991417 [s; relative to TRIGTIME]
T50: 99.2120000123978 +/- 2.28861880219093
Measured from: 7.75999999046326
to: 106.972000002861 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 8.92399999499321
to: 9.92399999499321 [s; relative to TRIGTIME]
Total Fluence
Measured from: -49.2240000069141
to: 139.444000005722 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.805094 2.950542 2.930605 0.816166
0.068758 0.072294 0.065223 0.055348 [error]
Peak 0.038001 0.074839 0.114173 0.053884
0.005364 0.006150 0.006601 0.005258 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 188.668 -49.224 139.444
T90 165.148 -35.564 129.584
T50 99.212 7.760 106.972
Peak 1.000 8.924 9.924
====== 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 -1.108 -0.051 0.051 - - - 2.97e-03 -8.14e-05 8.12e-05 58.050 57
CPL -1.008 -0.120 0.205 587.200 -587.200 -587.200 3.28e-03 -2.10e-04 7.13e-04 57.320 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 -0.600 -0.129 0.133 - - - 1.66e-02 -1.30e-03 1.29e-03 68.270 57
CPL -0.108 -0.457 0.661 249.337 -105.142 -249.337 2.58e-02 -8.95e-03 1.91e-02 66.100 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 4.97e-07 1.16e-06 2.16e-06 9.62e-06 5.85e-06 1.34e-05 erg/cm2
90%_error_low -2.93e-08 -4.02e-08 -6.46e-08 -6.79e-07 -1.67e-07 -7.05e-07 erg/cm2
90%_error_hi 3.01e-08 4.00e-08 6.44e-08 7.16e-07 1.67e-07 7.38e-07 erg/cm2
Peak flux PL 2.91e-01 5.03e-01 6.64e-01 1.78e+00 1.94e+00 3.24e+00 ph/cm2/s
90%_error_low -4.79e-02 -5.23e-02 -4.80e-02 -2.74e-01 -1.41e-01 -2.87e-01 ph/cm2/s
90%_error_hi 5.13e-02 5.19e-02 4.78e-02 3.07e-01 1.41e-01 3.04e-01 ph/cm2/s
Fluence CPL 4.83e-07 1.17e-06 2.18e-06 8.44e-06 5.82e-06 1.23e-05 erg/cm2
90%_error_low -3.90e-08 -4.15e-08 -7.64e-08 -1.89e-06 -1.79e-07 -1.88e-06 erg/cm2
90%_error_hi 3.79e-08 4.16e-08 7.76e-08 1.54e-06 1.69e-07 1.45e-06 erg/cm2
Peak flux CPL 2.45e-01 5.03e-01 7.06e-01 1.18e+00 1.91e+00 2.63e+00 ph/cm2/s
90%_error_low -6.68e-02 -5.57e-02 -6.72e-02 -4.15e-01 -1.46e-01 -4.46e-01 ph/cm2/s
90%_error_hi 7.18e-02 5.52e-02 6.88e-02 6.93e-01 1.45e-01 7.12e-01 ph/cm2/s
======================================================================
Special notes of this burst