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: Wed Jan 22 18:56:53 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger176918
======================================================================
Trigger: 00176918 Segment: 000
BAT Trigger Time: 158703344.192 [s; MET]
Trigger Stop: 158703345.216 [s; MET]
UTC: 2006-01-11T20:15:43.242160 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 286.33719257667 Dec: 70.3598868857769 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.97
Image Trigger?: NO
Rate S/N Ratio: 18.5202591774521 [ if not an image trigger ]
Image S/N Ratio: 6.97
Analysis Position: [ source = BAT ]
RA: 286.33719257667 Dec: 70.3598868857769 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 286.438531629384 Dec: 70.3798717461811 [deg; J2000]
{ 19h 05m 45.2s , +70d 22' 47.5" }
+/- 1.50481362963756 [arcmin] (estimated 90% radius based on SNR)
+/- 0.704802884287371 [arcmin] (formal 1-sigma fit error)
SNR: 16.9656945094922
Angular difference between the analysis and refined position is 2.368613 arcmin
Partial Coding Fraction: 0.2851562 [ including projection effects ]
Duration
T90: 58.8320000171661 +/- 4.2843211762303
Measured from: -1.2039999961853
to: 57.6280000209808 [s; relative to TRIGTIME]
T50: 21.1599999964237 +/- 2.91653561614679
Measured from: 2.30000001192093
to: 23.4600000083447 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.243999987840652
to: 1.24399998784065 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.02799999713898
to: 61.6960000097752 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.517679 0.557789 0.876554 0.365391
0.061983 0.065212 0.057827 0.048210 [error]
Peak 0.041492 0.024755 0.096288 0.024909
0.009839 0.011005 0.010627 0.008203 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 63.724 -2.028 61.696
T90 58.832 -1.204 57.628
T50 21.160 2.300 23.460
Peak 1.000 0.244 1.244
====== 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 -0.992 -0.159 0.165 - - - 2.35e-03 -2.09e-04 2.06e-04 53.280 57
CPL -0.930 -0.224 0.407 987.810 -987.810 -987.810 2.51e-03 -3.48e-04 9.86e-04 53.590 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 -0.823 -0.322 0.347 - - - 1.22e-02 -2.37e-03 2.29e-03 62.510 57
CPL -0.645 -0.497 1.873 503.264 -503.264 -503.264 1.43e-02 -4.18e-03 4.48e-02 62.570 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 1.19e-07 3.00e-07 6.02e-07 3.04e-06 1.63e-06 4.06e-06 erg/cm2
90%_error_low -2.25e-08 -3.44e-08 -5.47e-08 -6.20e-07 -1.44e-07 -6.44e-07 erg/cm2
90%_error_hi 2.42e-08 3.38e-08 5.43e-08 7.34e-07 1.44e-07 7.43e-07 erg/cm2
Peak flux PL 2.63e-01 3.98e-01 4.50e-01 9.68e-01 1.40e+00 2.08e+00 ph/cm2/s
90%_error_low -1.02e-01 -1.03e-01 -8.02e-02 -3.40e-01 -2.61e-01 -3.94e-01 ph/cm2/s
90%_error_hi 1.21e-01 1.01e-01 7.95e-02 4.50e-01 2.63e-01 4.25e-01 ph/cm2/s
Fluence CPL 1.19e-07 3.00e-07 6.03e-07 3.23e-06 1.63e-06 4.03e-06 erg/cm2
90%_error_low N/A -3.45e-08 N/A -1.43e-06 -1.87e-07 -1.20e-06 erg/cm2
90%_error_hi N/A 3.38e-08 N/A 1.21e-07 1.80e-07 3.66e-07 erg/cm2
Peak flux CPL 2.64e-01 4.00e-01 4.50e-01 9.61e-01 1.40e+00 2.08e+00 ph/cm2/s
90%_error_low N/A N/A -7.99e-02 N/A -2.80e-01 -7.88e-01 ph/cm2/s
90%_error_hi N/A N/A 6.32e-02 N/A 2.61e-01 4.12e-01 ph/cm2/s
======================================================================