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 13 05:22:42 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger518507
======================================================================
Trigger: 00518507 Segment: 000
BAT Trigger Time: 354261559.36 [s; MET]
Trigger Stop: 354261560.384 [s; MET]
UTC: 2012-03-24T05:59:11.334480 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 291.084059291849 Dec: 24.1452774141341 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 19.05
Image Trigger?: NO
Rate S/N Ratio: 89.9388681271896 [ if not an image trigger ]
Image S/N Ratio: 19.05
Analysis Position: [ source = BAT ]
RA: 291.084059291849 Dec: 24.1452774141341 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 291.080478623267 Dec: 24.1397177760819 [deg; J2000]
{ 19h 24m 19.3s , +24d 08' 23.0" }
+/- 1.09968692335447 [arcmin] (estimated 90% radius based on SNR)
+/- 0.445113850140597 [arcmin] (formal 1-sigma fit error)
SNR: 26.5559950405019
Angular difference between the analysis and refined position is 0.386923 arcmin
Partial Coding Fraction: 0.8203125 [ including projection effects ]
Duration
T90: 118.423999965191 +/- 10.0100150231936
Measured from: -42.1680000424385
to: 76.2559999227524 [s; relative to TRIGTIME]
T50: 30.8319999575615 +/- 0.719510923285473
Measured from: 3.91200000047684
to: 34.7439999580383 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 33.6759999990463
to: 34.6759999990463 [s; relative to TRIGTIME]
Total Fluence
Measured from: -150.512000024319
to: 142.455999970436 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.707915 5.340255 4.723777 1.480314
0.105615 0.102871 0.088676 0.073665 [error]
Peak 0.144101 0.248482 0.258281 0.076070
0.007649 0.008728 0.008697 0.006033 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 292.968 -150.512 142.456
T90 118.424 -42.168 76.256
T50 30.832 3.912 34.744
Peak 1.000 33.676 34.676
====== 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 -1.312 -0.045 0.045 - - - 3.48e-03 -8.06e-05 8.05e-05 43.020 57
CPL -1.308 -0.045 0.086 9998.450 -9998.450 -9998.450 3.49e-03 -7.82e-05 4.13e-04 43.080 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 -1.126 -0.067 0.067 - - - 4.94e-02 -1.85e-03 1.85e-03 56.780 57
CPL -1.000 -0.156 0.263 457.640 -457.640 -457.640 5.62e-02 -8.12e-03 1.67e-02 56.040 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 1.09e-06 2.25e-06 3.62e-06 1.31e-05 1.00e-05 2.00e-05 erg/cm2
90%_error_low -5.58e-08 -6.66e-08 -9.33e-08 -8.00e-07 -2.35e-07 -8.31e-07 erg/cm2
90%_error_hi 5.70e-08 6.64e-08 9.30e-08 8.38e-07 2.36e-07 8.62e-07 erg/cm2
Peak flux PL 1.42e+00 1.79e+00 1.64e+00 2.62e+00 5.75e+00 7.48e+00 ph/cm2/s
90%_error_low -1.08e-01 -8.28e-02 -6.93e-02 -2.35e-01 -2.23e-01 -2.98e-01 ph/cm2/s
90%_error_hi 1.11e-01 8.24e-02 6.90e-02 2.49e-01 2.23e-01 3.01e-01 ph/cm2/s
Fluence CPL 1.10e-06 2.24e-06 3.60e-06 1.30e-05 1.01e-05 2.08e-05 erg/cm2
90%_error_low N/A -6.26e-08 N/A N/A N/A -2.81e-06 erg/cm2
90%_error_hi N/A 7.04e-08 N/A N/A N/A -4.62e-07 erg/cm2
Peak flux CPL 9.53e-01 7.16e-01 3.76e-01 3.42e-01 2.18e+00 2.39e+00 ph/cm2/s
90%_error_low -1.11e-01 -1.04e-01 -3.09e-02 -5.09e-02 -2.93e-01 -2.45e-01 ph/cm2/s
90%_error_hi 1.27e-01 6.59e-02 1.92e-02 4.41e-02 1.83e-01 1.50e-01 ph/cm2/s
======================================================================
Special notes of this burst