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 12:56:25 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger375246
======================================================================
Trigger: 00375246 Segment: 000
BAT Trigger Time: 279435468.608 [s; MET]
Trigger Stop: 279435484.992 [s; MET]
UTC: 2009-11-09T04:57:43.363760 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 309.264961145751 Dec: -44.1765036048656 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.64
Image Trigger?: NO
Rate S/N Ratio: 13.5277492584687 [ if not an image trigger ]
Image S/N Ratio: 7.64
Analysis Position: [ source = BAT ]
RA: 309.264961145751 Dec: -44.1765036048656 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 309.252520677822 Dec: -44.1774300469834 [deg; J2000]
{ 20h 37m 00.6s , -44d 10' 38.7" }
+/- 2.09299540506235 [arcmin] (estimated 90% radius based on SNR)
+/- 1.09865328435654 [arcmin] (formal 1-sigma fit error)
SNR: 10.5895617528812
Angular difference between the analysis and refined position is 0.538210 arcmin
Partial Coding Fraction: 0.1972656 [ including projection effects ]
Duration
T90: 48.0320000648499 +/- 16.9502235222856
Measured from: 0.407999992370605
to: 48.4400000572205 [s; relative to TRIGTIME]
T50: 15.1520000696182 +/- 8.93454955460532
Measured from: 7.87999999523163
to: 23.0320000648499 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 8.2039999961853
to: 9.2039999961853 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.839999973773956
to: 51.7520000338554 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.557170 0.779658 0.692264 0.325297
0.104882 0.104663 0.088659 0.075500 [error]
Peak 0.021632 0.058814 0.046209 0.028349
0.014465 0.014648 0.012649 0.010496 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 52.592 -0.840 51.752
T90 48.032 0.408 48.440
T50 15.152 7.880 23.032
Peak 1.000 8.204 9.204
====== 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 -1.306 -0.245 0.254 - - - 3.16e-03 -4.16e-04 4.13e-04 60.550 57
CPL -1.318 -1.613 0.352 9999.360 N/A N/A 3.16e-03 N/A N/A 60.590 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 -1.358 -0.525 0.558 - - - 1.02e-02 -2.98e-03 2.97e-03 60.540 57
CPL -1.251 1.251 1.854 375.151 N/A N/A 1.14e-02 N/A N/A 60.560 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 1.77e-07 3.66e-07 5.92e-07 2.15e-06 1.64e-06 3.28e-06 erg/cm2
90%_error_low -4.80e-08 -6.15e-08 -8.76e-08 -6.64e-07 -2.19e-07 -7.12e-07 erg/cm2
90%_error_hi 5.26e-08 5.94e-08 8.58e-08 8.55e-07 2.20e-07 8.65e-07 erg/cm2
Peak flux PL 3.65e-01 4.00e-01 3.12e-01 4.00e-01 1.23e+00 1.48e+00 ph/cm2/s
90%_error_low -1.94e-01 -1.49e-01 -1.03e-01 -2.22e-01 -3.90e-01 -4.30e-01 ph/cm2/s
90%_error_hi 2.38e-01 1.42e-01 9.96e-02 3.49e-01 3.97e-01 4.30e-01 ph/cm2/s
Fluence CPL 1.77e-07 3.66e-07 5.92e-07 2.19e-06 1.65e-06 3.25e-06 erg/cm2
90%_error_low -4.83e-08 -6.15e-08 N/A -1.09e-06 -2.25e-07 -9.09e-07 erg/cm2
90%_error_hi 5.25e-08 5.93e-08 N/A 9.16e-07 2.14e-07 8.37e-07 erg/cm2
Peak flux CPL 3.67e-01 3.98e-01 3.10e-01 4.22e-01 1.23e+00 1.50e+00 ph/cm2/s
90%_error_low -2.17e-01 -1.47e-01 -1.02e-01 N/A -4.05e-01 -4.59e-01 ph/cm2/s
90%_error_hi 2.33e-01 1.58e-01 1.84e-01 N/A 3.95e-01 4.01e-01 ph/cm2/s
======================================================================
Special notes of this burst