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: Sat Oct 4 23:10:17 EDT 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger597841
======================================================================
Trigger: 00597841 Segment: 000
BAT Trigger Time: 420712232.448 [s; MET]
Trigger Stop: 420712233.472 [s; MET]
UTC: 2014-05-02T08:30:20.489000 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 319.15470216594 Dec: 49.0179516633632 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.76
Image Trigger?: NO
Rate S/N Ratio: 17.7763888346312 [ if not an image trigger ]
Image S/N Ratio: 7.76
Analysis Position: [ source = BAT ]
RA: 319.15470216594 Dec: 49.0179516633632 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 319.170479042702 Dec: 48.9775569616716 [deg; J2000]
{ 21h 16m 40.9s , +48d 58' 39.2" }
+/- 1.17278046971036 [arcmin] (estimated 90% radius based on SNR)
+/- 0.445183562930929 [arcmin] (formal 1-sigma fit error)
SNR: 24.2235251327384
Angular difference between the analysis and refined position is 2.501990 arcmin
Partial Coding Fraction: 0.9921875 [ including projection effects ]
Duration
T90: 15.1199999451637 +/- 1.88811543107599
Measured from: -0.952000021934509
to: 14.1679999232292 [s; relative to TRIGTIME]
T50: 7.13199996948242 +/- 1.16295486297824
Measured from: 1.18799996376038
to: 8.3199999332428 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.44400000572205
to: 2.44400000572205 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.66400003433228
to: 17.3919999599457 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.270291 0.340163 0.334148 0.111486
0.023581 0.024420 0.021357 0.017615 [error]
Peak 0.029760 0.046509 0.026514 0.015679
0.005608 0.005797 0.005060 0.004228 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 19.056 -1.664 17.392
T90 15.120 -0.952 14.168
T50 7.132 1.188 8.320
Peak 1.000 1.444 2.444
====== 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 -1.225 -0.131 0.132 - - - 3.52e-03 -2.40e-04 2.40e-04 51.170 57
CPL -1.227 -0.125 0.140 9999.360 -9999.360 -9999.360 3.53e-03 -2.41e-04 6.25e-04 51.220 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 -1.497 -0.267 0.262 - - - 6.99e-03 -1.10e-03 1.08e-03 67.270 57
CPL -1.346 -0.420 1.049 201.582 -201.582 -201.582 8.44e-03 -2.54e-03 2.17e-02 67.310 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 6.62e-08 1.44e-07 2.46e-07 9.73e-07 6.75e-07 1.43e-06 erg/cm2
90%_error_low -9.09e-09 -1.16e-08 -2.07e-08 -1.79e-07 -5.16e-08 -1.92e-07 erg/cm2
90%_error_hi 9.53e-09 1.15e-08 2.05e-08 2.06e-07 5.19e-08 2.15e-07 erg/cm2
Peak flux PL 2.87e-01 2.89e-01 2.05e-01 2.31e-01 8.72e-01 1.01e+00 ph/cm2/s
90%_error_low -6.82e-02 -4.43e-02 -4.15e-02 -8.27e-02 -1.28e-01 -1.55e-01 ph/cm2/s
90%_error_hi 7.21e-02 4.39e-02 4.12e-02 1.08e-01 1.29e-01 1.57e-01 ph/cm2/s
Fluence CPL 5.30e-08 6.87e-08 6.82e-08 1.51e-07 2.31e-07 3.39e-07 erg/cm2
90%_error_low -1.26e-08 -1.41e-08 -3.27e-08 -3.97e-08 -6.31e-08 -1.98e-07 erg/cm2
90%_error_hi 1.19e-08 1.10e-08 9.12e-09 4.11e-08 3.00e-08 4.10e-08 erg/cm2
Peak flux CPL 2.86e-01 2.90e-01 2.05e-01 2.22e-01 8.71e-01 1.00e+00 ph/cm2/s
90%_error_low -7.81e-02 -4.45e-02 -4.18e-02 -2.22e-01 -1.31e-01 -2.28e-01 ph/cm2/s
90%_error_hi 6.45e-02 5.71e-02 4.40e-02 6.87e-02 1.29e-01 1.62e-01 ph/cm2/s
======================================================================
Special notes of this burst