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.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sun Jan 19 23:32:23 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger319016
======================================================================
Trigger: 00319016 Segment: 000
BAT Trigger Time: 239584817.664 [s; MET]
Trigger Stop: 239584818.688 [s; MET]
UTC: 2008-08-04T23:20:14.670000 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 328.700699569253 Dec: -53.1947513223728 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.49
Image Trigger?: NO
Rate S/N Ratio: 12.8840987267251 [ if not an image trigger ]
Image S/N Ratio: 7.49
Analysis Position: [ source = BAT ]
RA: 328.700699569253 Dec: -53.1947513223728 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 328.673059820948 Dec: -53.1894744732047 [deg; J2000]
{ 21h 54m 41.5s , -53d 11' 22.1" }
+/- 1.15810163702579 [arcmin] (estimated 90% radius based on SNR)
+/- 0.372542331838535 [arcmin] (formal 1-sigma fit error)
SNR: 24.6633292495005
Angular difference between the analysis and refined position is 1.042819 arcmin
Partial Coding Fraction: 0.1972656 [ including projection effects ]
Duration
T90: 37.8720000088215 +/- 42.3550184846043
Measured from: 0.780000001192093
to: 38.6520000100136 [s; relative to TRIGTIME]
T50: 11.4040000140667 +/- 2.24436807837188
Measured from: 4.16799998283386
to: 15.5719999969006 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.60400000214577
to: 2.60400000214577 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.351999998092651
to: 112.856000006199 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.965022 1.498148 1.894939 0.633596
0.096247 0.095805 0.084934 0.072120 [error]
Peak 0.062872 0.129847 0.111745 0.049366
0.016184 0.016230 0.015997 0.012335 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 113.208 -0.352 112.856
T90 37.872 0.780 38.652
T50 11.404 4.168 15.572
Peak 1.000 1.604 2.604
====== 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 -1.087 -0.102 0.104 - - - 3.19e-03 -1.86e-04 1.84e-04 47.860 57
CPL -1.000 -0.131 0.363 719.173 -719.173 -719.173 3.46e-03 -4.29e-04 1.30e-03 47.880 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 -1.310 -0.238 0.240 - - - 2.56e-02 -3.53e-03 3.53e-03 44.630 57
CPL -1.017 -0.516 1.091 183.654 -183.654 -183.654 3.52e-02 -3.52e-02 7.62e-02 44.340 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 3.14e-07 7.43e-07 1.40e-06 6.38e-06 3.79e-06 8.84e-06 erg/cm2
90%_error_low -3.90e-08 -5.60e-08 -8.10e-08 -8.43e-07 -2.12e-07 -8.70e-07 erg/cm2
90%_error_hi 4.11e-08 5.57e-08 8.07e-08 9.34e-07 2.13e-07 9.46e-07 erg/cm2
Peak flux PL 8.80e-01 9.91e-01 7.99e-01 1.07e+00 3.06e+00 3.74e+00 ph/cm2/s
90%_error_low -2.24e-01 -1.63e-01 -1.27e-01 -3.20e-01 -4.44e-01 -5.22e-01 ph/cm2/s
90%_error_hi 2.45e-01 1.60e-01 1.25e-01 3.93e-01 4.47e-01 5.26e-01 ph/cm2/s
Fluence CPL 3.17e-07 7.44e-07 1.40e-06 6.48e-06 3.79e-06 8.41e-06 erg/cm2
90%_error_low -7.01e-08 -5.67e-08 -8.32e-08 -2.68e-06 -2.04e-07 -2.00e-06 erg/cm2
90%_error_hi 3.16e-08 5.67e-08 1.07e-07 5.07e-07 2.10e-07 9.21e-07 erg/cm2
Peak flux CPL 8.23e-01 1.01e+00 8.27e-01 7.95e-01 3.03e+00 3.46e+00 ph/cm2/s
90%_error_low -2.76e-01 -1.74e-01 -1.47e-01 -4.79e-01 -4.59e-01 -7.05e-01 ph/cm2/s
90%_error_hi 2.86e-01 1.82e-01 1.56e-01 3.84e-01 4.61e-01 7.60e-01 ph/cm2/s
======================================================================
Special notes of this burst