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: Wed Jan 22 13:48:32 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger228316
======================================================================
Trigger: 00228316 Segment: 000
BAT Trigger Time: 179224368 [s; MET]
Trigger Stop: 179224432 [s; MET]
UTC: 2006-09-06T08:32:46.573080 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 40.7485000090217 Dec: 30.3494020585399 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.96
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.96
Analysis Position: [ source = BAT ]
RA: 40.7485000090217 Dec: 30.3494020585399 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 40.7119716223741 Dec: 30.3561616373423 [deg; J2000]
{ 02h 42m 50.9s , +30d 21' 22.2" }
+/- 2.30678805573973 [arcmin] (estimated 90% radius based on SNR)
+/- 1.00649717813953 [arcmin] (formal 1-sigma fit error)
SNR: 9.2158619370197
Angular difference between the analysis and refined position is 1.934285 arcmin
Partial Coding Fraction: 0.453125 [ including projection effects ]
Duration
T90: 44.5879999995232 +/- 2.59449571961208
Measured from: -39.9280000030994
to: 4.65999999642372 [s; relative to TRIGTIME]
T50: 17.0960000157356 +/- 2.35680543187746
Measured from: -32.3000000119209
to: -15.2039999961853 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -24.8120000064373
to: -23.8120000064373 [s; relative to TRIGTIME]
Total Fluence
Measured from: -41.7960000038147
to: 8.30000001192093 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.317647 1.496176 0.845607 0.203501
0.066231 0.069054 0.059785 0.050217 [error]
Peak 0.073020 0.083412 0.053519 0.001752
0.009681 0.010371 0.008645 0.006966 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 50.096 -41.796 8.300
T90 44.588 -39.928 4.660
T50 17.096 -32.300 -15.204
Peak 1.000 -24.812 -23.812
====== 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 -1.979 -0.105 0.102 - - - 4.95e-03 -3.13e-04 3.10e-04 56.530 57
CPL -1.550 -0.405 0.450 47.803 -18.967 42.777 8.44e-03 -3.28e-03 6.23e-03 53.230 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 -1.997 -0.259 0.239 - - - 1.32e-02 -2.24e-03 2.17e-03 66.830 57
CPL -1.533 -0.611 1.163 44.608 N/A N/A 2.40e-02 N/A N/A 66.170 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 4.98e-07 6.84e-07 6.94e-07 1.28e-06 2.29e-06 3.16e-06 erg/cm2
90%_error_low -4.25e-08 -3.75e-08 -5.98e-08 -2.13e-07 -1.39e-07 -2.75e-07 erg/cm2
90%_error_hi 4.35e-08 3.75e-08 6.01e-08 2.40e-07 1.39e-07 2.93e-07 erg/cm2
Peak flux PL 8.78e-01 6.59e-01 3.30e-01 2.37e-01 1.98e+00 2.10e+00 ph/cm2/s
90%_error_low -1.69e-01 -8.96e-02 -7.21e-02 -8.62e-02 -2.71e-01 -2.87e-01 ph/cm2/s
90%_error_hi 1.76e-01 8.96e-02 7.22e-02 1.10e-01 2.71e-01 2.87e-01 ph/cm2/s
Fluence CPL 4.70e-07 7.15e-07 6.96e-07 6.59e-07 2.20e-06 2.54e-06 erg/cm2
90%_error_low -4.96e-08 -4.75e-08 -6.44e-08 -2.93e-07 -1.58e-07 -3.39e-07 erg/cm2
90%_error_hi 5.03e-08 4.85e-08 6.41e-08 5.70e-07 1.59e-07 5.83e-07 erg/cm2
Peak flux CPL 8.34e-01 6.98e-01 3.36e-01 1.34e-01 1.95e+00 2.00e+00 ph/cm2/s
90%_error_low -1.96e-01 -1.50e-01 -7.83e-02 -1.34e-01 -2.77e-01 -3.03e-01 ph/cm2/s
90%_error_hi 9.74e-02 1.24e-01 7.90e-02 1.78e-01 2.76e-01 3.62e-01 ph/cm2/s
======================================================================
Special notes of this burst