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: Mon Jan 20 08:47:19 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger283320
======================================================================
Trigger: 00283320 Segment: 000
BAT Trigger Time: 204734464.896 [s; MET]
Trigger Stop: 204734465.92 [s; MET]
UTC: 2007-06-28T14:41:02.843960 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 115.283792218838 Dec: -20.2846481551998 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.08
Image Trigger?: NO
Rate S/N Ratio: 24.3721152139079 [ if not an image trigger ]
Image S/N Ratio: 12.08
Analysis Position: [ source = BAT ]
RA: 115.283792218838 Dec: -20.2846481551998 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 115.271587247302 Dec: -20.2801849570132 [deg; J2000]
{ 07h 41m 05.2s , -20d 16' 48.7" }
+/- 1.22185885560025 [arcmin] (estimated 90% radius based on SNR)
+/- 0.311826738501272 [arcmin] (formal 1-sigma fit error)
SNR: 22.8456020462954
Angular difference between the analysis and refined position is 0.737247 arcmin
Partial Coding Fraction: 0.5859375 [ including projection effects ]
Duration
T90: 39.080000013113 +/- 4.07110598949185
Measured from: -26.1159999966621
to: 12.9640000164509 [s; relative to TRIGTIME]
T50: 6.15200001001358 +/- 0.592283710686162
Measured from: 1.71200001239777
to: 7.86400002241135 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 4.88800001144409
to: 5.88800001144409 [s; relative to TRIGTIME]
Total Fluence
Measured from: -31.7360000014305
to: 16.1879999935627 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.001426 2.252915 1.511788 0.040672
0.059250 0.068902 0.065652 0.074380 [error]
Peak 0.164791 0.226039 0.147421 0.020496
0.010493 0.012438 0.011402 0.011811 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 47.924 -31.736 16.188
T90 39.080 -26.116 12.964
T50 6.152 1.712 7.864
Peak 1.000 4.888 5.888
====== 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 -1.886 -0.080 0.078 - - - 8.08e-03 -3.52e-04 3.49e-04 58.760 57
CPL -1.766 -0.276 0.301 92.466 N/A N/A 9.33e-03 N/A N/A 58.250 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 -1.706 -0.120 0.118 - - - 3.74e-02 -2.74e-03 2.71e-03 63.460 57
CPL -1.375 -0.397 0.499 86.624 -28.786 -86.624 5.66e-02 -2.09e-02 4.78e-02 61.880 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 7.11e-07 1.03e-06 1.12e-06 2.26e-06 3.56e-06 5.13e-06 erg/cm2
90%_error_low -4.66e-08 -4.01e-08 -6.87e-08 -2.84e-07 -1.54e-07 -3.42e-07 erg/cm2
90%_error_hi 4.77e-08 4.01e-08 6.89e-08 3.11e-07 1.55e-07 3.63e-07 erg/cm2
Peak flux PL 1.88e+00 1.67e+00 1.03e+00 9.54e-01 4.98e+00 5.53e+00 ph/cm2/s
90%_error_low -1.94e-01 -1.11e-01 -9.83e-02 -1.71e-01 -3.28e-01 -3.66e-01 ph/cm2/s
90%_error_hi 1.99e-01 1.11e-01 9.82e-02 1.92e-01 3.28e-01 3.67e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -4.66e-08 -4.01e-08 -6.87e-08 -2.84e-07 -1.54e-07 -3.42e-07 erg/cm2
90%_error_hi 4.77e-08 4.01e-08 6.89e-08 3.11e-07 1.55e-07 3.63e-07 erg/cm2
Peak flux CPL 1.80e+00 1.74e+00 1.04e+00 6.18e-01 4.91e+00 5.19e+00 ph/cm2/s
90%_error_low -2.24e-01 -1.37e-01 -1.04e-01 -2.71e-01 -3.42e-01 -4.53e-01 ph/cm2/s
90%_error_hi 2.27e-01 1.41e-01 1.05e-01 3.97e-01 3.42e-01 5.73e-01 ph/cm2/s
======================================================================
Special notes of this burst