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 08:51:45 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger282808
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Trigger: 00282808 Segment: 000
BAT Trigger Time: 204160661.888 [s; MET]
Trigger Stop: 204160662.912 [s; MET]
UTC: 2007-06-21T23:17:39.850480 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 323.80441851629 Dec: -24.80574107457 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.01
Image Trigger?: NO
Rate S/N Ratio: 17.2916164657906 [ if not an image trigger ]
Image S/N Ratio: 9.01
Analysis Position: [ source = BAT ]
RA: 323.80441851629 Dec: -24.80574107457 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 323.806433141097 Dec: -24.8101230300264 [deg; J2000]
{ 21h 35m 13.5s , -24d 48' 36.4" }
+/- 0.894165670619298 [arcmin] (estimated 90% radius based on SNR)
+/- 0.248461303940003 [arcmin] (formal 1-sigma fit error)
SNR: 35.6879209582564
Angular difference between the analysis and refined position is 0.284894 arcmin
Partial Coding Fraction: 0.3164062 [ including projection effects ]
Duration
T90: 33.2639999985695 +/- 2.50705882258121
Measured from: -2.13199999928474
to: 31.1319999992847 [s; relative to TRIGTIME]
T50: 17.5839999914169 +/- 0.756042309071645
Measured from: 4.45199999213219
to: 22.0359999835491 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 21.5759999752045
to: 22.5759999752045 [s; relative to TRIGTIME]
Total Fluence
Measured from: -5.19200000166893
to: 36.4639999866486 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.700355 2.390057 1.952503 0.562269
0.067000 0.068263 0.059753 0.046388 [error]
Peak 0.071206 0.110255 0.090672 0.040049
0.010781 0.011552 0.010275 0.007882 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 41.656 -5.192 36.464
T90 33.264 -2.132 31.132
T50 17.584 4.452 22.036
Peak 1.000 21.576 22.576
====== 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 -1.527 -0.061 0.061 - - - 1.12e-02 -3.63e-04 3.63e-04 41.100 57
CPL -1.484 -0.152 0.203 666.596 -666.596 -666.596 1.17e-02 -8.53e-04 2.63e-03 41.140 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 -1.376 -0.198 0.201 - - - 2.05e-02 -2.29e-03 2.29e-03 61.170 57
CPL -1.378 -0.195 0.292 9999.360 -9999.360 -9999.360 2.06e-02 -1.81e-02 -1.08e-02 61.180 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 6.11e-07 1.10e-06 1.53e-06 4.43e-06 4.40e-06 7.67e-06 erg/cm2
90%_error_low -3.95e-08 -4.21e-08 -6.01e-08 -3.85e-07 -1.48e-07 -4.18e-07 erg/cm2
90%_error_hi 4.05e-08 4.19e-08 6.00e-08 4.09e-07 1.48e-07 4.36e-07 erg/cm2
Peak flux PL 7.51e-01 8.13e-01 6.27e-01 7.91e-01 2.49e+00 2.98e+00 ph/cm2/s
90%_error_low -1.58e-01 -1.08e-01 -8.23e-02 -2.00e-01 -2.95e-01 -3.35e-01 ph/cm2/s
90%_error_hi 1.69e-01 1.06e-01 8.10e-02 2.39e-01 2.97e-01 3.36e-01 ph/cm2/s
Fluence CPL 6.09e-07 1.10e-06 1.53e-06 4.41e-06 4.40e-06 7.58e-06 erg/cm2
90%_error_low -5.13e-08 -4.04e-08 -6.27e-08 -1.23e-06 -1.60e-07 -1.11e-06 erg/cm2
90%_error_hi 3.19e-08 4.57e-08 7.01e-08 2.64e-07 1.52e-07 4.93e-07 erg/cm2
Peak flux CPL 5.08e-01 2.79e-01 1.70e-01 1.33e-01 9.14e-01 9.36e-01 ph/cm2/s
90%_error_low -2.25e-01 -1.34e-01 -8.75e-02 -1.33e-01 -4.12e-01 -4.24e-01 ph/cm2/s
90%_error_hi 2.60e-01 2.63e-01 6.58e-02 5.78e-02 7.27e-01 7.47e-01 ph/cm2/s
======================================================================