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 19:58:32 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger337115
======================================================================
Trigger: 00337115 Segment: 000
BAT Trigger Time: 250688894.016 [s; MET]
Trigger Stop: 250688896.064 [s; MET]
UTC: 2008-12-11T11:48:10.690660 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 328.087288181771 Dec: -33.8149123552862 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.53
Image Trigger?: NO
Rate S/N Ratio: 7.41619848709566 [ if not an image trigger ]
Image S/N Ratio: 6.53
Analysis Position: [ source = BAT ]
RA: 328.087288181771 Dec: -33.8149123552862 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 328.079885243816 Dec: -33.8179449543086 [deg; J2000]
{ 21h 52m 19.2s , -33d 49' 04.6" }
+/- 2.29289696332006 [arcmin] (estimated 90% radius based on SNR)
+/- 1.18442844115158 [arcmin] (formal 1-sigma fit error)
SNR: 9.29572621565351
Angular difference between the analysis and refined position is 0.411452 arcmin
Partial Coding Fraction: 0.4257812 [ including projection effects ]
Duration
T90: 3.42399999499321 +/- 0.84217814817088
Measured from: -0.891999989748001
to: 2.53200000524521 [s; relative to TRIGTIME]
T50: 1.57600003480911 +/- 0.894588156469805
Measured from: 0.227999985218048
to: 1.80400002002716 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.19200000166893
to: 1.19200000166893 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.08000001311302
to: 2.75200000405312 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.097022 0.106774 0.040645 0.015413
0.016293 0.017086 0.014801 0.013366 [error]
Peak 0.016072 0.047566 0.024554 0.002273
0.008272 0.008887 0.007544 0.006893 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 3.832 -1.080 2.752
T90 3.424 -0.892 2.532
T50 1.576 0.228 1.804
Peak 1.000 0.192 1.192
====== 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 -2.231 -0.416 0.365 - - - 3.60e-03 -1.04e-03 1.00e-03 66.420 57
CPL -1.514 -0.571 3.530 24.722 N/A N/A 1.02e-02 N/A N/A 65.850 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 -1.634 -0.446 0.433 - - - 6.28e-03 -1.79e-03 1.77e-03 62.550 57
CPL -0.222 -1.866 3.011 56.985 N/A N/A 3.72e-02 N/A N/A 60.930 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 3.52e-08 4.15e-08 3.54e-08 5.12e-08 1.30e-07 1.63e-07 erg/cm2
90%_error_low -8.78e-09 -8.78e-09 -1.30e-08 -2.89e-08 -3.11e-08 -4.90e-08 erg/cm2
90%_error_hi 8.98e-09 8.60e-09 1.41e-08 4.70e-08 3.26e-08 6.23e-08 erg/cm2
Peak flux PL 2.94e-01 2.73e-01 1.76e-01 1.75e-01 8.16e-01 9.18e-01 ph/cm2/s
90%_error_low -1.18e-01 -7.78e-02 -6.08e-02 -9.43e-02 -2.26e-01 -2.50e-01 ph/cm2/s
90%_error_hi 1.31e-01 7.70e-02 6.07e-02 1.41e-01 2.27e-01 2.51e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -8.78e-09 -8.78e-09 -1.30e-08 -2.89e-08 -3.11e-08 -4.90e-08 erg/cm2
90%_error_hi 8.98e-09 8.60e-09 1.41e-08 4.70e-08 3.26e-08 6.23e-08 erg/cm2
Peak flux CPL 2.47e-01 3.21e-01 1.85e-01 4.25e-02 7.87e-01 7.95e-01 ph/cm2/s
90%_error_low -1.31e-01 -1.01e-01 -8.68e-02 -4.25e-02 -2.27e-01 -2.33e-01 ph/cm2/s
90%_error_hi 1.45e-01 1.13e-01 7.43e-02 1.80e-01 2.30e-01 2.81e-01 ph/cm2/s
======================================================================
Special notes of this burst