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 17:16:52 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger350311
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Trigger: 00350311 Segment: 000
BAT Trigger Time: 262275134.016 [s; MET]
Trigger Stop: 262275135.04 [s; MET]
UTC: 2009-04-24T14:12:09.330200 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 189.537885215137 Dec: 16.8295481175842 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 23.3
Image Trigger?: NO
Rate S/N Ratio: 255.998046867549 [ if not an image trigger ]
Image S/N Ratio: 23.3
Analysis Position: [ source = BAT ]
RA: 189.537885215137 Dec: 16.8295481175842 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 189.530585094208 Dec: 16.8293462274994 [deg; J2000]
{ 12h 38m 07.3s , +16d 49' 45.6" }
+/- 0.837448408297704 [arcmin] (estimated 90% radius based on SNR)
+/- 0.320800297444586 [arcmin] (formal 1-sigma fit error)
SNR: 39.1902733062376
Angular difference between the analysis and refined position is 0.419423 arcmin
Partial Coding Fraction: 0.1289062 [ including projection effects ]
Duration
T90: 49.4600000083447 +/- 2.26859604796511
Measured from: -0.120000004768372
to: 49.3400000035763 [s; relative to TRIGTIME]
T50: 3.36800000071526 +/- 0.048166349704769
Measured from: 0.680000007152557
to: 4.04800000786781 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.0960000157356262
to: 0.903999984264374 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.708000004291534
to: 102.520000010729 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 8.174245 12.340217 9.926880 2.593959
0.131021 0.152710 0.143717 0.103984 [error]
Peak 1.757820 2.871438 2.812179 0.878621
0.048934 0.062862 0.064888 0.041449 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 103.228 -0.708 102.520
T90 49.460 -0.120 49.340
T50 3.368 0.680 4.048
Peak 1.000 -0.096 0.904
====== 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: CPL)
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 -1.532 -0.034 0.034 - - - 2.27e-02 -4.15e-04 4.15e-04 56.880 57
CPL -1.241 -0.138 0.142 152.785 -31.344 81.407 3.03e-02 -3.78e-03 4.44e-03 43.590 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: CPL)
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 -0.046 0.046 - - - 5.96e-01 -1.54e-02 1.54e-02 57.270 57
CPL -0.984 -0.184 0.191 183.397 -47.119 156.988 8.26e-01 -1.37e-01 1.72e-01 48.110 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 3.08e-06 5.55e-06 7.68e-06 2.21e-05 2.21e-05 3.84e-05 erg/cm2
90%_error_low -1.18e-07 -1.25e-07 -1.61e-07 -1.05e-06 -4.07e-07 -1.12e-06 erg/cm2
90%_error_hi 1.20e-07 1.24e-07 1.61e-07 1.09e-06 4.07e-07 1.15e-06 erg/cm2
Peak flux PL 3.54e-03 4.24e-02 4.57e-01 5.51e+01 2.80e+00 5.37e+01 ph/cm2/s
90%_error_low N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_hi N/A N/A N/A N/A N/A N/A ph/cm2/s
Fluence CPL 2.84e-06 5.61e-06 7.91e-06 1.59e-05 2.18e-05 3.23e-05 erg/cm2
90%_error_low -1.57e-07 -1.30e-07 -1.93e-07 -2.20e-06 -4.36e-07 -2.23e-06 erg/cm2
90%_error_hi 1.60e-07 1.30e-07 1.94e-07 2.64e-06 4.36e-07 2.65e-06 erg/cm2
Peak flux CPL 1.86e+01 2.33e+01 1.94e+01 1.88e+01 6.99e+01 8.01e+01 ph/cm2/s
90%_error_low -1.37e+00 -7.68e-01 -6.85e-01 -2.79e+00 -2.08e+00 -3.64e+00 ph/cm2/s
90%_error_hi 1.40e+00 7.71e-01 6.90e-01 3.40e+00 2.08e+00 4.07e+00 ph/cm2/s
======================================================================