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: Wed Jan 22 20:22:50 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger154112
======================================================================
Trigger: 00154112 Segment: 000
BAT Trigger Time: 147850951.104 [s; MET]
Trigger Stop: 147850953.152 [s; MET]
UTC: 2005-09-08T05:42:31.386740 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 20.4636377922441 Dec: -12.9713413289566 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.29
Image Trigger?: NO
Rate S/N Ratio: 9.38083151964686 [ if not an image trigger ]
Image S/N Ratio: 9.29
Analysis Position: [ source = BAT ]
RA: 20.4636377922441 Dec: -12.9713413289566 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 20.4669194304627 Dec: -12.9538449663945 [deg; J2000]
{ 01h 21m 52.1s , -12d 57' 13.8" }
+/- 1.4886888869372 [arcmin] (estimated 90% radius based on SNR)
+/- 0.569753991333922 [arcmin] (formal 1-sigma fit error)
SNR: 17.2288226091153
Angular difference between the analysis and refined position is 1.067174 arcmin
Partial Coding Fraction: 0.734375 [ including projection effects ]
Duration
T90: 18.2840000092983 +/- 3.28171966294318
Measured from: -4.89599999785423
to: 13.3880000114441 [s; relative to TRIGTIME]
T50: 6.72000002861023 +/- 1.67973448236579
Measured from: -0.0480000078678131
to: 6.67200002074242 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.65599998831749
to: 2.65599998831749 [s; relative to TRIGTIME]
Total Fluence
Measured from: -6.81600001454353
to: 15.8400000035763 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.280288 0.350097 0.194908 0.024949
0.025284 0.026392 0.022774 0.019103 [error]
Peak 0.017687 0.038734 0.021445 0.007373
0.005449 0.005799 0.004935 0.004016 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 22.656 -6.816 15.840
T90 18.284 -4.896 13.388
T50 6.720 -0.048 6.672
Peak 1.000 1.656 2.656
====== 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 -1.833 -0.160 0.154 - - - 2.32e-03 -2.42e-04 2.38e-04 54.750 57
CPL -0.937 -0.688 0.825 50.461 -9.614 31.311 7.52e-03 -4.42e-03 1.48e-02 49.600 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 -1.485 -0.316 0.311 - - - 5.61e-03 -1.11e-03 1.09e-03 54.360 57
CPL -0.229 -1.364 2.077 67.921 -16.252 -67.921 2.52e-02 -2.52e-02 2.60e-01 52.110 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 9.17e-08 1.38e-07 1.55e-07 3.29e-07 4.83e-07 7.13e-07 erg/cm2
90%_error_low -1.17e-08 -1.22e-08 -2.15e-08 -8.34e-08 -5.03e-08 -1.08e-07 erg/cm2
90%_error_hi 1.20e-08 1.22e-08 2.18e-08 1.00e-07 5.12e-08 1.21e-07 erg/cm2
Peak flux PL 2.27e-01 2.31e-01 1.65e-01 1.88e-01 6.97e-01 8.12e-01 ph/cm2/s
90%_error_low -6.78e-02 -4.65e-02 -4.00e-02 -7.72e-02 -1.34e-01 -1.57e-01 ph/cm2/s
90%_error_hi 7.32e-02 4.60e-02 3.97e-02 1.04e-01 1.34e-01 1.59e-01 ph/cm2/s
Fluence CPL 8.45e-08 1.53e-07 1.50e-07 8.36e-08 4.42e-07 4.72e-07 erg/cm2
90%_error_low -1.33e-08 -1.69e-08 -2.67e-08 -5.26e-08 -5.59e-08 -7.77e-08 erg/cm2
90%_error_hi 1.33e-08 1.75e-08 2.51e-08 1.43e-07 5.88e-08 1.50e-07 erg/cm2
Peak flux CPL 1.86e-01 2.61e-01 1.78e-01 5.68e-02 6.67e-01 6.81e-01 ph/cm2/s
90%_error_low -8.25e-02 -5.86e-02 -4.74e-02 -5.68e-02 -1.40e-01 -1.50e-01 ph/cm2/s
90%_error_hi 8.69e-02 6.30e-02 4.79e-02 1.64e-01 1.39e-01 1.96e-01 ph/cm2/s
======================================================================
Special notes of this burst