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 09:22:43 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger280706
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Trigger: 00280706 Segment: 000
BAT Trigger Time: 202135710.336 [s; MET]
Trigger Stop: 202135722.496 [s; MET]
UTC: 2007-05-29T12:48:28.349220 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 283.750487750051 Dec: 20.6391633973926 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.76
Image Trigger?: NO
Rate S/N Ratio: 12.1243556529821 [ if not an image trigger ]
Image S/N Ratio: 6.76
Analysis Position: [ source = BAT ]
RA: 283.750487750051 Dec: 20.6391633973926 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 283.710573554232 Dec: 20.6570580754761 [deg; J2000]
{ 18h 54m 50.5s , +20d 39' 25.4" }
+/- 1.85208645026671 [arcmin] (estimated 90% radius based on SNR)
+/- 1.06217211359147 [arcmin] (formal 1-sigma fit error)
SNR: 12.6108732097534
Angular difference between the analysis and refined position is 2.484943 arcmin
Partial Coding Fraction: 0.1699219 [ including projection effects ]
Duration
T90: 108.90000000596 +/- 20.731834542909
Measured from: 3.37999999523163
to: 112.280000001192 [s; relative to TRIGTIME]
T50: 54.9920000135899 +/- 8.41497044437814
Measured from: 13.9760000109673
to: 68.9680000245571 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 2.36399999260902
to: 3.36399999260902 [s; relative to TRIGTIME]
Total Fluence
Measured from: 2.36000001430511
to: 120.888000011444 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.791069 1.311019 1.124310 0.355189
0.107652 0.112814 0.099829 0.084344 [error]
Peak 0.027148 0.070842 0.060171 0.016868
0.012485 0.014056 0.013144 0.010678 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 118.528 2.360 120.888
T90 108.900 3.380 112.280
T50 54.992 13.976 68.968
Peak 1.000 2.364 3.364
====== 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 -1.365 -0.158 0.159 - - - 2.15e-03 -1.93e-04 1.93e-04 52.780 57
CPL -1.297 -0.215 0.617 505.014 -505.014 -505.014 2.32e-03 -7.61e-04 2.18e-03 52.760 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 -1.487 -0.406 0.388 - - - 1.17e-02 -2.94e-03 2.90e-03 41.940 57
CPL -0.237 -0.986 2.245 73.668 -24.311 -73.668 4.76e-02 -4.76e-02 4.48e-01 40.070 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 2.86e-07 5.71e-07 8.87e-07 3.03e-06 2.48e-06 4.77e-06 erg/cm2
90%_error_low -4.70e-08 -5.79e-08 -9.82e-08 -6.78e-07 -2.42e-07 -7.52e-07 erg/cm2
90%_error_hi 4.93e-08 5.71e-08 9.72e-08 8.04e-07 2.43e-07 8.54e-07 erg/cm2
Peak flux PL 4.76e-01 4.83e-01 3.45e-01 3.92e-01 1.46e+00 1.70e+00 ph/cm2/s
90%_error_low -1.75e-01 -1.23e-01 -1.06e-01 -1.96e-01 -3.55e-01 -4.16e-01 ph/cm2/s
90%_error_hi 1.95e-01 1.22e-01 1.05e-01 2.80e-01 3.56e-01 4.22e-01 ph/cm2/s
Fluence CPL 2.83e-07 5.75e-07 8.92e-07 2.74e-06 2.47e-06 4.49e-06 erg/cm2
90%_error_low -5.61e-08 -6.07e-08 -1.02e-07 -1.53e-06 -2.58e-07 -1.53e-06 erg/cm2
90%_error_hi 4.57e-08 6.63e-08 1.09e-07 4.80e-07 2.51e-07 5.45e-07 erg/cm2
Peak flux CPL 3.70e-01 5.35e-01 3.90e-01 1.43e-01 1.40e+00 1.44e+00 ph/cm2/s
90%_error_low -2.11e-01 -1.45e-01 -1.27e-01 -1.43e-01 -3.64e-01 -3.90e-01 ph/cm2/s
90%_error_hi 2.34e-01 1.53e-01 1.33e-01 3.55e-01 3.65e-01 4.92e-01 ph/cm2/s
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