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 13 05:39:08 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger517489
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Trigger: 00517489 Segment: 000
BAT Trigger Time: 353171298.816 [s; MET]
Trigger Stop: 353171299.84 [s; MET]
UTC: 2012-03-11T15:08:10.834740 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 258.501429204094 Dec: -13.0597932121755 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.22
Image Trigger?: NO
Rate S/N Ratio: 16.1864140562386 [ if not an image trigger ]
Image S/N Ratio: 7.22
Analysis Position: [ source = BAT ]
RA: 258.501429204094 Dec: -13.0597932121755 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 258.551351570023 Dec: -13.0627598169576 [deg; J2000]
{ 17h 14m 12.3s , -13d 03' 45.9" }
+/- 1.27920857204349 [arcmin] (estimated 90% radius based on SNR)
+/- 0.621428473204472 [arcmin] (formal 1-sigma fit error)
SNR: 21.3966117922561
Angular difference between the analysis and refined position is 2.923273 arcmin
Partial Coding Fraction: 0.625 [ including projection effects ]
Duration
T90: 29.6879999637604 +/- 6.02357236760383
Measured from: -9.87199997901917
to: 19.8159999847412 [s; relative to TRIGTIME]
T50: 12.5079999566078 +/- 1.37930995620285
Measured from: -1.72799998521805
to: 10.7799999713898 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 9.0440000295639
to: 10.0440000295639 [s; relative to TRIGTIME]
Total Fluence
Measured from: -15.0439999699593
to: 22.6520000100136 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.676005 0.755398 0.365582 0.073663
0.046794 0.045988 0.038850 0.036621 [error]
Peak 0.061129 0.078966 0.023972 0.001721
0.008220 0.008458 0.006757 0.006100 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 37.696 -15.044 22.652
T90 29.688 -9.872 19.816
T50 12.508 -1.728 10.780
Peak 1.000 9.044 10.044
====== 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 -1.943 -0.136 0.133 - - - 3.00e-03 -2.61e-04 2.58e-04 60.720 57
CPL -1.243 -0.594 0.712 44.923 -10.239 27.259 7.61e-03 -4.10e-03 1.21e-02 56.600 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 -2.120 -0.250 0.231 - - - 9.15e-03 -1.69e-03 1.66e-03 81.100 57
CPL 1.020 -1.554 2.107 37.016 -4.995 5.369 7.13e-01 -7.13e-01 1.24e+01 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 2.19e-07 3.08e-07 3.20e-07 6.12e-07 1.04e-06 1.46e-06 erg/cm2
90%_error_low -2.35e-08 -2.24e-08 -3.77e-08 -1.33e-07 -8.73e-08 -1.75e-07 erg/cm2
90%_error_hi 2.41e-08 2.24e-08 3.81e-08 1.57e-07 8.85e-08 1.93e-07 erg/cm2
Peak flux PL 6.85e-01 4.79e-01 2.20e-01 1.42e-01 1.45e+00 1.53e+00 ph/cm2/s
90%_error_low -1.23e-01 -6.88e-02 -5.09e-02 -5.22e-02 -2.06e-01 -2.18e-01 ph/cm2/s
90%_error_hi 1.27e-01 6.87e-02 5.26e-02 6.77e-02 2.06e-01 2.18e-01 ph/cm2/s
Fluence CPL 2.27e-07 3.10e-07 3.18e-07 7.46e-07 1.05e-06 1.50e-06 erg/cm2
90%_error_low -2.49e-08 -7.50e-09 -5.67e-08 -6.70e-07 -1.87e-07 -6.15e-07 erg/cm2
90%_error_hi 2.40e-08 5.58e-08 3.42e-08 -2.49e-07 2.48e-08 -1.38e-07 erg/cm2
Peak flux CPL 5.43e-01 6.60e-01 1.79e-01 5.60e-03 1.39e+00 1.39e+00 ph/cm2/s
90%_error_low -1.51e-01 -1.07e-01 -6.57e-02 -5.60e-03 -2.04e-01 -2.04e-01 ph/cm2/s
90%_error_hi 1.52e-01 1.10e-01 6.97e-02 2.05e-02 2.05e-01 2.05e-01 ph/cm2/s
======================================================================