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 04:04:56 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger554620
======================================================================
Trigger: 00554620 Segment: 000
BAT Trigger Time: 388741688 [s; MET]
Trigger Stop: 388741752 [s; MET]
UTC: 2013-04-27T07:47:57.511640 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 173.138779355743 Dec: 27.6915539178619 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 23.81
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 23.81
Analysis Position: [ source = BAT ]
RA: 173.138779355743 Dec: 27.6915539178619 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 173.149056906524 Dec: 27.7053988484936 [deg; J2000]
{ 11h 32m 35.8s , +27d 42' 19.4" }
+/- 0.982137400870556 [arcmin] (estimated 90% radius based on SNR)
+/- 0.238352452217769 [arcmin] (formal 1-sigma fit error)
SNR: 31.2105110737043
Angular difference between the analysis and refined position is 0.994062 arcmin
Partial Coding Fraction: 0.140625 [ including projection effects ]
Duration
T90: 244.331999957561 +/- 4.73248855584923
Measured from: -47.0120000243187
to: 197.319999933243 [s; relative to TRIGTIME]
T50: 22.4959999918938 +/- 0.596335433568541
Measured from: -43.744000017643
to: -21.2480000257492 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -43.4240000247955
to: -42.4240000247955 [s; relative to TRIGTIME]
Total Fluence
Measured from: -51.1520000100136
to: 660.040000021458 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 109.839288 171.510934 174.416588 64.949497
0.355854 0.426354 0.438499 0.347329 [error]
Peak 5.516924 12.745294 18.743381 8.652996
0.068270 0.103737 0.131189 0.113289 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 711.192 -51.152 660.040
T90 244.332 -47.012 197.320
T50 22.496 -43.744 -21.248
Peak 1.000 -43.424 -42.424
====== 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 -1.176 -0.018 0.019 - - - 5.13e-02 -6.29e-04 6.25e-04 19.530 57
CPL -1.169 -0.019 0.038 9995.160 -9995.160 -9995.160 5.16e-02 -5.82e-04 9.34e-04 19.980 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: CPL)
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 -0.722 -0.023 0.023 - - - 3.13e+00 -4.55e-02 4.54e-02 46.320 57
CPL -0.502 -0.098 0.100 467.392 -122.351 303.925 3.77e+00 -2.95e-01 3.24e-01 31.440 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 3.44e-05 7.72e-05 1.37e-04 5.68e-04 3.73e-04 8.16e-04 erg/cm2
90%_error_low -9.09e-07 -1.27e-06 -1.32e-06 -1.19e-05 -3.67e-06 -1.17e-05 erg/cm2
90%_error_hi 9.21e-07 1.27e-06 1.32e-06 1.21e-05 3.68e-06 1.18e-05 erg/cm2
Peak flux PL 1.40e-02 1.87e-01 3.07e+00 3.35e+02 1.09e+01 3.39e+02 ph/cm2/s
90%_error_low N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_hi N/A N/A N/A N/A N/A N/A ph/cm2/s
Fluence CPL 3.51e-05 7.72e-05 1.36e-04 5.94e-04 3.73e-04 8.13e-04 erg/cm2
90%_error_low N/A -1.33e-06 N/A N/A -3.75e-06 -9.42e-06 erg/cm2
90%_error_hi N/A 1.21e-06 N/A N/A 3.57e-06 1.10e-05 erg/cm2
Peak flux CPL 5.65e+01 9.82e+01 1.23e+02 2.41e+02 3.59e+02 5.19e+02 ph/cm2/s
90%_error_low -2.79e+00 -2.00e+00 -2.20e+00 -1.69e+01 -5.07e+00 -1.79e+01 ph/cm2/s
90%_error_hi 2.85e+00 1.99e+00 2.21e+00 1.86e+01 5.08e+00 1.95e+01 ph/cm2/s
======================================================================
Special notes of this burst