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: Sun Jan 12 04:58:30 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger551126
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Trigger: 00551126 Segment: 000
BAT Trigger Time: 385044343.296 [s; MET]
Trigger Stop: 385044355.456 [s; MET]
UTC: 2013-03-15T12:45:32.970220 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 157.542476803624 Dec: -51.8102228367283 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.07
Image Trigger?: NO
Rate S/N Ratio: 10.6301458127346 [ if not an image trigger ]
Image S/N Ratio: 8.07
Analysis Position: [ source = BAT ]
RA: 157.542476803624 Dec: -51.8102228367283 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 157.54192132379 Dec: -51.7952974134817 [deg; J2000]
{ 10h 30m 10.1s , -51d 47' 43.1" }
+/- 1.33822522045647 [arcmin] (estimated 90% radius based on SNR)
+/- 0.511332951102274 [arcmin] (formal 1-sigma fit error)
SNR: 20.0614520961373
Angular difference between the analysis and refined position is 0.895763 arcmin
Partial Coding Fraction: 0.421875 [ including projection effects ]
Duration
T90: 230.507999956608 +/- 17.9689910938007
Measured from: 7.63599997758865
to: 238.143999934196 [s; relative to TRIGTIME]
T50: 138.939999938011 +/- 9.95173307156065
Measured from: 34.3280000090599
to: 173.267999947071 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 8.40799999237061
to: 9.40799999237061 [s; relative to TRIGTIME]
Total Fluence
Measured from: 1.6240000128746
to: 267.995999991894 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.374187 2.916598 2.038402 0.405682
0.111176 0.113993 0.098584 0.081744 [error]
Peak 0.011009 0.044977 0.055766 0.007795
0.009266 0.010166 0.009385 0.007232 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 266.372 1.624 267.996
T90 230.508 7.636 238.144
T50 138.940 34.328 173.268
Peak 1.000 8.408 9.408
====== 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 -1.725 -0.084 0.083 - - - 1.84e-03 -8.86e-05 8.82e-05 70.960 57
CPL -1.342 -0.334 0.363 83.564 -19.887 191.004 2.89e-03 -9.23e-04 1.51e-03 67.090 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 -1.072 -0.362 0.396 - - - 8.38e-03 -2.08e-03 2.05e-03 64.440 57
CPL 0.487 -1.667 2.799 92.322 -28.125 -92.322 4.07e-02 -4.07e-02 4.74e-01 62.030 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 7.73e-07 1.24e-06 1.50e-06 3.55e-06 4.53e-06 7.06e-06 erg/cm2
90%_error_low -5.97e-08 -5.87e-08 -9.61e-08 -4.63e-07 -2.27e-07 -5.44e-07 erg/cm2
90%_error_hi 6.12e-08 5.86e-08 9.61e-08 5.08e-07 2.28e-07 5.78e-07 erg/cm2
Peak flux PL 2.29e-01 2.98e-01 2.83e-01 4.78e-01 9.69e-01 1.29e+00 ph/cm2/s
90%_error_low -1.00e-01 -9.22e-02 -6.89e-02 -1.97e-01 -2.46e-01 -3.06e-01 ph/cm2/s
90%_error_hi 1.19e-01 9.10e-02 6.85e-02 2.65e-01 2.50e-01 3.11e-01 ph/cm2/s
Fluence CPL 7.25e-07 1.28e-06 1.52e-06 2.01e-06 4.39e-06 5.54e-06 erg/cm2
90%_error_low -7.21e-08 -7.09e-08 -1.02e-07 -7.37e-07 -2.58e-07 -7.81e-07 erg/cm2
90%_error_hi 7.31e-08 7.21e-08 1.03e-07 1.27e-06 2.58e-07 1.28e-06 erg/cm2
Peak flux CPL 1.51e-01 3.21e-01 3.40e-01 1.65e-01 9.28e-01 9.78e-01 ph/cm2/s
90%_error_low -1.07e-01 -1.12e-01 -9.26e-02 -1.65e-01 -2.48e-01 -2.83e-01 ph/cm2/s
90%_error_hi 1.41e-01 1.11e-01 9.80e-02 3.91e-01 2.54e-01 4.15e-01 ph/cm2/s
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