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 04:10:04 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger304379
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Trigger: 00304379 Segment: 000
BAT Trigger Time: 225997502.144 [s; MET]
Trigger Stop: 225997503.168 [s; MET]
UTC: 2008-02-29T17:04:59.534140 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 228.216781802381 Dec: -14.7122099614831 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.25
Image Trigger?: NO
Rate S/N Ratio: 25.4558441227157 [ if not an image trigger ]
Image S/N Ratio: 10.25
Analysis Position: [ source = BAT ]
RA: 228.216781802381 Dec: -14.7122099614831 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 228.217202049544 Dec: -14.6986805700422 [deg; J2000]
{ 15h 12m 52.1s , -14d 41' 55.3" }
+/- 1.49793324965752 [arcmin] (estimated 90% radius based on SNR)
+/- 0.712984851448159 [arcmin] (formal 1-sigma fit error)
SNR: 17.0771292084207
Angular difference between the analysis and refined position is 0.812130 arcmin
Partial Coding Fraction: 0.1875 [ including projection effects ]
Duration
T90: 64 +/- 16
Measured from: -15.1439999938011
to: 48.8560000061989 [s; relative to TRIGTIME]
T50: 16 +/- 16
Measured from: 16.8560000061989
to: 32.8560000061989 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 40.3560000061989
to: 41.3560000061989 [s; relative to TRIGTIME]
Total Fluence
Measured from: -15.1439999938011
to: 80.8560000061989 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 4.942118 5.874404 3.648288 0.981153
0.102324 0.107410 0.093773 0.076839 [error]
Peak 0.276691 0.341468 0.212336 0.042842
0.012754 0.013540 0.011470 0.007661 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 96.000 -15.144 80.856
T90 64.000 -15.144 48.856
T50 16.000 16.856 32.856
Peak 1.000 40.356 41.356
====== 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 -1.813 -0.051 0.051 - - - 1.03e-02 -2.67e-04 2.67e-04 57.820 57
CPL -1.813 -0.050 0.054 9999.360 -9999.350 -9999.360 1.03e-02 -2.61e-04 1.81e-03 57.830 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 -1.767 -0.088 0.087 - - - 5.53e-02 -2.79e-03 2.78e-03 46.230 57
CPL -1.543 -0.267 0.354 99.721 -34.954 -99.721 7.20e-02 -1.86e-02 3.67e-02 44.900 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 1.70e-06 2.57e-06 2.93e-06 6.36e-06 9.10e-06 1.36e-05 erg/cm2
90%_error_low -8.40e-08 -7.24e-08 -1.01e-07 -4.86e-07 -2.39e-07 -5.46e-07 erg/cm2
90%_error_hi 8.59e-08 7.23e-08 1.01e-07 5.13e-07 2.39e-07 5.66e-07 erg/cm2
Peak flux PL 2.94e+00 2.53e+00 1.49e+00 1.31e+00 7.53e+00 8.27e+00 ph/cm2/s
90%_error_low -2.38e-01 -1.26e-01 -9.72e-02 -1.67e-01 -3.74e-01 -3.91e-01 ph/cm2/s
90%_error_hi 2.44e-01 1.26e-01 9.68e-02 1.81e-01 3.74e-01 3.91e-01 ph/cm2/s
Fluence CPL 1.71e-06 2.57e-06 2.93e-06 6.35e-06 9.13e-06 1.36e-05 erg/cm2
90%_error_low -1.06e-07 -6.90e-08 -1.35e-07 N/A -3.64e-07 -1.37e-06 erg/cm2
90%_error_hi 7.28e-08 1.08e-07 1.48e-07 N/A 2.85e-07 5.14e-07 erg/cm2
Peak flux CPL 2.83e+00 2.58e+00 1.51e+00 1.00e+00 7.43e+00 7.92e+00 ph/cm2/s
90%_error_low -2.87e-01 -1.46e-01 -1.03e-01 -3.23e-01 -3.97e-01 -5.41e-01 ph/cm2/s
90%_error_hi 2.92e-01 1.48e-01 1.05e-01 3.72e-01 3.97e-01 6.04e-01 ph/cm2/s
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