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 10:06:39 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger277582
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Trigger: 00277582 Segment: 000
BAT Trigger Time: 199508946.368 [s; MET]
Trigger Stop: 199508946.752 [s; MET]
UTC: 2007-04-29T03:09:04.446800 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 328.024078768624 Dec: -38.8438832424751 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8
Image Trigger?: NO
Rate S/N Ratio: 18.3575597506858 [ if not an image trigger ]
Image S/N Ratio: 8
Analysis Position: [ source = BAT ]
RA: 328.024078768624 Dec: -38.8438832424751 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 328.020664983542 Dec: -38.8516608361705 [deg; J2000]
{ 21h 52m 05.0s , -38d 51' 06.0" }
+/- 1.86738401901006 [arcmin] (estimated 90% radius based on SNR)
+/- 0.815503421875004 [arcmin] (formal 1-sigma fit error)
SNR: 12.4635498350436
Angular difference between the analysis and refined position is 0.493168 arcmin
Partial Coding Fraction: 0.6640625 [ including projection effects ]
Duration
T90: 0.488000005483627 +/- 0.0430813393540356
Measured from: -0.196000009775162
to: 0.291999995708466 [s; relative to TRIGTIME]
T50: 0.364000022411346 +/- 0.055569781312264
Measured from: -0.136000007390976
to: 0.22800001502037 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.437999993562698
to: 0.562000006437302 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.208000004291534
to: 0.328000009059906 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.034408 0.043151 0.028294 0.003328
0.004792 0.005206 0.004487 0.003449 [error]
Peak 0.046337 0.051856 0.028457 0.005098
0.006318 0.006574 0.005682 0.004481 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 0.536 -0.208 0.328
T90 0.488 -0.196 0.292
T50 0.364 -0.136 0.228
Peak 1.000 -0.438 0.562
====== 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 -1.645 -0.227 0.220 - - - 1.31e-02 -1.91e-03 1.88e-03 65.180 57
CPL -1.099 -0.721 1.245 72.852 -25.966 -72.852 2.65e-02 -1.50e-02 1.11e-01 64.240 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 -1.836 -0.249 0.236 - - - 7.90e-03 -1.35e-03 1.32e-03 64.600 57
CPL -0.371 -1.308 1.916 43.586 -8.997 43.149 6.03e-02 -6.03e-02 8.74e-01 60.860 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 1.03e-08 1.72e-08 2.21e-08 5.66e-08 6.52e-08 1.06e-07 erg/cm2
90%_error_low -2.01e-09 -2.29e-09 -4.21e-09 -1.92e-08 -1.00e-08 -2.38e-08 erg/cm2
90%_error_hi 2.07e-09 2.29e-09 4.22e-09 2.47e-08 1.02e-08 2.82e-08 erg/cm2
Peak flux PL 4.50e-01 3.71e-01 2.08e-01 1.72e-01 1.10e+00 1.20e+00 ph/cm2/s
90%_error_low -8.79e-02 -5.25e-02 -4.50e-02 -6.15e-02 -1.56e-01 -1.73e-01 ph/cm2/s
90%_error_hi 9.07e-02 5.25e-02 4.57e-02 7.96e-02 1.56e-01 1.74e-01 ph/cm2/s
Fluence CPL 9.77e-09 1.86e-08 2.21e-08 2.27e-08 6.18e-08 7.32e-08 erg/cm2
90%_error_low -2.24e-09 -3.14e-09 -4.97e-09 -1.80e-08 -1.18e-08 -2.19e-08 erg/cm2
90%_error_hi 2.25e-09 3.48e-09 4.61e-09 4.03e-08 1.18e-08 5.73e-08 erg/cm2
Peak flux CPL 4.08e-01 4.41e-01 1.90e-01 2.75e-02 1.06e+00 1.07e+00 ph/cm2/s
90%_error_low -1.01e-01 -8.12e-02 -6.98e-02 -2.75e-02 -1.59e-01 -1.62e-01 ph/cm2/s
90%_error_hi 1.01e-01 8.63e-02 5.92e-02 1.09e-01 1.60e-01 1.72e-01 ph/cm2/s
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