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 05:03:21 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger518792
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Trigger: 00518792 Segment: 000
BAT Trigger Time: 354596787.072 [s; MET]
Trigger Stop: 354596788.48 [s; MET]
UTC: 2012-03-28T03:06:19.032840 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 241.549796791991 Dec: -39.3402511024914 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.57
Image Trigger?: NO
Rate S/N Ratio: 13.1909059582729 [ if not an image trigger ]
Image S/N Ratio: 6.57
Analysis Position: [ source = BAT ]
RA: 241.549796791991 Dec: -39.3402511024914 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 241.606988592298 Dec: -39.3221541575653 [deg; J2000]
{ 16h 06m 25.7s , -39d 19' 19.8" }
+/- 1.7695533704008 [arcmin] (estimated 90% radius based on SNR)
+/- 0.724701411119114 [arcmin] (formal 1-sigma fit error)
SNR: 13.4594535820635
Angular difference between the analysis and refined position is 2.867763 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 29.9279999732971 +/- 6.66506352223562
Measured from: -15.9000000357628
to: 14.0279999375343 [s; relative to TRIGTIME]
T50: 12.3359999656677 +/- 2.93431559074022
Measured from: -10.8440000414848
to: 1.49199992418289 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.107999980449677
to: 1.10799998044968 [s; relative to TRIGTIME]
Total Fluence
Measured from: -17.2600000500679
to: 20.5479999780655 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.302021 0.385292 0.187890 0.065593
0.038000 0.033065 0.027693 0.023895 [error]
Peak 0.028965 0.031687 0.031992 0.006983
0.006374 0.005850 0.004904 0.004075 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 37.808 -17.260 20.548
T90 29.928 -15.900 14.028
T50 12.336 -10.844 1.492
Peak 1.000 0.108 1.108
====== 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: 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 -1.867 -0.200 0.194 - - - 1.37e-03 -1.74e-04 1.71e-04 77.140 57
CPL -0.882 -0.908 1.166 46.583 -10.330 60.684 5.10e-03 -5.10e-03 1.97e-02 73.700 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 -1.402 -0.326 0.326 - - - 6.06e-03 -1.08e-03 1.07e-03 63.130 57
CPL -1.190 -1.639 1.210 204.312 -204.312 -204.312 7.64e-03 -2.63e-03 1.84e-02 63.130 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 9.34e-08 1.37e-07 1.50e-07 3.10e-07 4.76e-07 6.91e-07 erg/cm2
90%_error_low -1.49e-08 -1.49e-08 -2.55e-08 -9.44e-08 -5.96e-08 -1.23e-07 erg/cm2
90%_error_hi 1.54e-08 1.49e-08 2.60e-08 1.20e-07 6.07e-08 1.43e-07 erg/cm2
Peak flux PL 2.27e-01 2.42e-01 1.83e-01 2.25e-01 7.38e-01 8.78e-01 ph/cm2/s
90%_error_low -7.14e-02 -4.87e-02 -4.04e-02 -9.00e-02 -1.34e-01 -1.57e-01 ph/cm2/s
90%_error_hi 7.93e-02 4.75e-02 3.96e-02 1.22e-01 1.35e-01 1.59e-01 ph/cm2/s
Fluence CPL 8.58e-08 1.53e-07 1.41e-07 6.56e-08 4.25e-07 4.45e-07 erg/cm2
90%_error_low -1.69e-08 -2.08e-08 -3.52e-08 -4.96e-08 -6.81e-08 -8.56e-08 erg/cm2
90%_error_hi 1.71e-08 2.16e-08 3.13e-08 1.98e-07 7.49e-08 2.08e-07 erg/cm2
Peak flux CPL 2.22e-01 2.44e-01 1.85e-01 2.01e-01 7.34e-01 8.52e-01 ph/cm2/s
90%_error_low -9.02e-02 -5.01e-02 -4.21e-02 -2.01e-01 -1.42e-01 -2.19e-01 ph/cm2/s
90%_error_hi 4.53e-02 5.28e-02 4.62e-02 9.39e-02 1.38e-01 1.82e-01 ph/cm2/s
======================================================================