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 12 03:53:02 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger554996
======================================================================
Trigger: 00554996 Segment: 000
BAT Trigger Time: 389209841.152 [s; MET]
Trigger Stop: 389209841.216 [s; MET]
UTC: 2013-05-02T17:50:30.642920 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 138.577789038498 Dec: -0.143261927772071 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.75
Image Trigger?: NO
Rate S/N Ratio: 13.076696830622 [ if not an image trigger ]
Image S/N Ratio: 7.75
Analysis Position: [ source = BAT ]
RA: 138.577789038498 Dec: -0.143261927772071 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 138.576416102131 Dec: -0.143687216245506 [deg; J2000]
{ 09h 14m 18.3s , -00d 08' 37.3" }
+/- 1.89503469948159 [arcmin] (estimated 90% radius based on SNR)
+/- 0.923253093726447 [arcmin] (formal 1-sigma fit error)
SNR: 12.2045684545505
Angular difference between the analysis and refined position is 0.086238 arcmin
Partial Coding Fraction: 0.4726562 [ including projection effects ]
Duration
T90: 7.567999958992 +/- 4.44984135991245
Measured from: -0.100000023841858
to: 7.46799993515015 [s; relative to TRIGTIME]
T50: 2.33199995756149 +/- 0.456508505864197
Measured from: 0.167999982833862
to: 2.49999994039536 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.216000020503998
to: 0.783999979496002 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.196000039577484
to: 10.2039999961853 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.243782 0.255007 0.203317 0.020296
0.031770 0.033184 0.030699 0.031037 [error]
Peak 0.084963 0.127071 0.105184 0.016687
0.011129 0.012343 0.011447 0.010026 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 10.400 -0.196 10.204
T90 7.568 -0.100 7.468
T50 2.332 0.168 2.500
Peak 1.000 -0.216 0.784
====== 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 -1.856 -0.265 0.249 - - - 4.50e-03 -7.28e-04 7.05e-04 61.300 57
CPL -1.736 -0.590 1.109 99.062 -99.047 -99.062 5.24e-03 -5.24e-03 1.58e-02 61.260 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
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 -1.724 -0.186 0.178 - - - 2.16e-02 -2.62e-03 2.58e-03 82.580 57
CPL -0.648 -0.763 0.901 58.811 -11.442 33.628 8.12e-02 -4.88e-02 1.60e-01 76.460 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 8.36e-08 1.24e-07 1.37e-07 2.85e-07 4.31e-07 6.29e-07 erg/cm2
90%_error_low -1.67e-08 -1.65e-08 -2.99e-08 -1.09e-07 -6.82e-08 -1.43e-07 erg/cm2
90%_error_hi 1.74e-08 1.65e-08 3.02e-08 1.47e-07 6.97e-08 1.72e-07 erg/cm2
Peak flux PL 1.10e+00 9.72e-01 5.89e-01 5.39e-01 2.89e+00 3.20e+00 ph/cm2/s
90%_error_low -1.77e-01 -1.07e-01 -9.04e-02 -1.45e-01 -3.17e-01 -3.53e-01 ph/cm2/s
90%_error_hi 1.85e-01 1.07e-01 9.02e-02 1.72e-01 3.18e-01 3.54e-01 ph/cm2/s
Fluence CPL 8.25e-08 1.26e-07 1.37e-07 2.29e-07 4.26e-07 5.74e-07 erg/cm2
90%_error_low -1.93e-08 -1.81e-08 -2.74e-08 -1.81e-07 -7.79e-08 -2.06e-07 erg/cm2
90%_error_hi 1.87e-08 2.23e-08 3.11e-08 7.95e-08 7.36e-08 1.02e-07 erg/cm2
Peak flux CPL 9.47e-01 1.09e+00 6.26e-01 1.86e-01 2.80e+00 2.85e+00 ph/cm2/s
90%_error_low -2.09e-01 -1.37e-01 -1.07e-01 -1.02e-01 -3.23e-01 -3.43e-01 ph/cm2/s
90%_error_hi 2.14e-01 1.41e-01 1.07e-01 2.03e-01 3.23e-01 3.62e-01 ph/cm2/s
======================================================================
Special notes of this burst