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: Mon Jan 20 02:57:27 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger309010
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Trigger: 00309010 Segment: 000
BAT Trigger Time: 229641335.296 [s; MET]
Trigger Stop: 229641335.36 [s; MET]
UTC: 2008-04-11T21:15:32.585440 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 38.0182886268497 Dec: -71.3420191948273 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.14
Image Trigger?: NO
Rate S/N Ratio: 14.3178210632764 [ if not an image trigger ]
Image S/N Ratio: 8.14
Analysis Position: [ source = BAT ]
RA: 38.0182886268497 Dec: -71.3420191948273 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 37.9612896897009 Dec: -71.2971012249888 [deg; J2000]
{ 02h 31m 50.7s , -71d 17' 49.6" }
+/- 0.485111069216351 [arcmin] (estimated 90% radius based on SNR)
+/- 0.128724523163234 [arcmin] (formal 1-sigma fit error)
SNR: 85.4902698526476
Angular difference between the analysis and refined position is 2.909172 arcmin
Partial Coding Fraction: 0.8671875 [ including projection effects ]
Duration
T90: 56.3280000090599 +/- 0.922752397908764
Measured from: 4.71999999880791
to: 61.0480000078678 [s; relative to TRIGTIME]
T50: 25.0879999995232 +/- 0.0823650343659764
Measured from: 17.9239999949932
to: 43.0119999945164 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 40.4519999921322
to: 41.4519999921322 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.272000014781952
to: 77.2759999930859 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 15.069075 17.226665 11.395270 2.715978
0.068647 0.072991 0.063979 0.049402 [error]
Peak 1.348448 1.929183 1.410960 0.300256
0.015259 0.018058 0.016243 0.009547 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 77.548 -0.272 77.276
T90 56.328 4.720 61.048
T50 25.088 17.924 43.012
Peak 1.000 40.452 41.452
====== 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 -1.684 -0.024 0.024 - - - 3.68e-02 -4.74e-04 4.72e-04 29.800 57
CPL -1.664 -0.043 0.006 998.238 -998.228 -998.238 3.76e-02 -1.12e-03 -2.51e-04 31.700 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
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 -1.534 -0.030 0.030 - - - 3.22e-01 -5.16e-03 5.16e-03 71.830 57
CPL -1.223 -0.121 0.124 149.110 -25.809 54.921 4.36e-01 -4.71e-02 5.41e-02 51.880 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 4.33e-06 7.12e-06 8.86e-06 2.19e-05 2.65e-05 4.22e-05 erg/cm2
90%_error_low -1.29e-07 -1.25e-07 -1.09e-07 -6.46e-07 -3.22e-07 -6.46e-07 erg/cm2
90%_error_hi 1.31e-07 1.25e-07 1.09e-07 6.60e-07 3.22e-07 6.55e-07 erg/cm2
Peak flux PL 1.37e+01 1.35e+01 9.33e+00 1.02e+01 4.06e+01 4.67e+01 ph/cm2/s
90%_error_low -4.75e-01 -2.82e-01 -1.61e-01 -3.81e-01 -7.82e-01 -7.63e-01 ph/cm2/s
90%_error_hi 4.83e-01 2.81e-01 1.61e-01 3.89e-01 7.85e-01 7.64e-01 ph/cm2/s
Fluence CPL 4.33e-06 7.12e-06 8.86e-06 2.18e-05 2.65e-05 4.46e-05 erg/cm2
90%_error_low -1.29e-07 -1.25e-07 -1.09e-07 N/A -3.23e-07 N/A erg/cm2
90%_error_hi 1.31e-07 1.25e-07 1.09e-07 N/A 3.22e-07 N/A erg/cm2
Peak flux CPL 1.24e+01 1.36e+01 9.67e+00 7.90e+00 3.95e+01 4.36e+01 ph/cm2/s
90%_error_low -6.47e-01 -2.90e-01 -2.04e-01 -7.19e-01 -8.76e-01 -1.25e+00 ph/cm2/s
90%_error_hi 6.61e-01 2.90e-01 2.05e-01 8.10e-01 8.82e-01 1.31e+00 ph/cm2/s
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