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: Sat May 9 18:55:13 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger361831
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Trigger: 00361831 Segment: 000
BAT Trigger Time: 273720263.168 [s; MET]
Trigger Stop: 273720267.264 [s; MET]
UTC: 2009-09-04T01:24:18.112980 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 264.191456096339 Dec: -25.2122851571245 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.98
Image Trigger?: NO
Rate S/N Ratio: 16.7332005306815 [ if not an image trigger ]
Image S/N Ratio: 7.98
Analysis Position: [ source = BAT ]
RA: 264.191456096339 Dec: -25.2122851571245 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 264.194989970473 Dec: -25.2153248171904 [deg; J2000]
{ 17h 36m 46.8s , -25d 12' 55.2" }
+/- 1.23622447529625 [arcmin] (estimated 90% radius based on SNR)
+/- 0.478353652224521 [arcmin] (formal 1-sigma fit error)
SNR: 22.4672932930081
Angular difference between the analysis and refined position is 0.264691 arcmin
Partial Coding Fraction: 0.08886719 [ including projection effects ]
Duration
T90: 64 +/- 16
Measured from: -15.1679999828339
to: 48.8320000171661 [s; relative to TRIGTIME]
T50: 32 +/- 16
Measured from: 0.832000017166138
to: 32.8320000171661 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 8.33200001716614
to: 9.33200001716614 [s; relative to TRIGTIME]
Total Fluence
Measured from: -15.1679999828339
to: 64.8320000171661 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 4.184649 6.527371 5.351663 1.992180
0.236600 0.237249 0.212953 0.191607 [error]
Peak 0.083382 0.136115 0.057899 0.062064
0.025162 0.028245 0.026450 0.020986 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 80.000 -15.168 64.832
T90 64.000 -15.168 48.832
T50 32.000 0.832 32.832
Peak 1.000 8.332 9.332
====== 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 -1.564 -0.076 0.076 - - - 1.69e-02 -6.88e-04 6.88e-04 48.360 57
CPL -1.565 -0.074 0.141 9999.360 -9999.360 -9999.360 1.69e-02 -6.70e-04 3.08e-03 48.400 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 -1.877 -0.550 0.483 - - - 1.93e-02 -6.38e-03 6.08e-03 66.250 57
CPL -0.877 -1.288 5.565 50.106 -41.420 -50.106 6.85e-02 -6.85e-02 9.44e+01 65.860 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 1.83e-06 3.23e-06 4.38e-06 1.22e-05 1.27e-05 2.16e-05 erg/cm2
90%_error_low -1.46e-07 -1.53e-07 -2.20e-07 -1.34e-06 -5.38e-07 -1.47e-06 erg/cm2
90%_error_hi 1.51e-07 1.52e-07 2.19e-07 1.45e-06 5.39e-07 1.55e-06 erg/cm2
Peak flux PL 1.14e+00 9.19e-01 5.00e-01 3.99e-01 2.74e+00 2.96e+00 ph/cm2/s
90%_error_low -4.67e-01 -2.65e-01 -2.07e-01 -2.49e-01 -7.94e-01 -8.43e-01 ph/cm2/s
90%_error_hi 5.21e-01 2.64e-01 2.05e-01 3.95e-01 7.97e-01 8.44e-01 ph/cm2/s
Fluence CPL 1.83e-06 3.23e-06 4.33e-06 1.37e-05 1.28e-05 2.18e-05 erg/cm2
90%_error_low N/A -1.53e-07 N/A N/A -6.23e-07 -3.15e-06 erg/cm2
90%_error_hi N/A 1.52e-07 N/A N/A 4.53e-07 1.53e-06 erg/cm2
Peak flux CPL 1.00e+00 1.02e+00 5.13e-01 1.35e-01 2.64e+00 2.68e+00 ph/cm2/s
90%_error_low N/A -3.49e-01 N/A -1.35e-01 -8.78e-01 -9.11e-01 ph/cm2/s
90%_error_hi N/A 4.31e-01 N/A 2.96e-01 8.40e-01 1.07e+00 ph/cm2/s
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