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.
Special note: Due to the low partial coding fraction, the refined position is found using the DETECTION mask. Therefore, the refined position and the mask shadow pattern shown here are from analyses with DETECTION mask, everything else uses the FLUX mask.
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BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sat May 9 19:31:40 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger234516
======================================================================
Trigger: 00234516 Segment: 000
BAT Trigger Time: 182924348.48 [s; MET]
Trigger Stop: 182924352.576 [s; MET]
UTC: 2006-10-19T04:19:06.964420 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 91.6165852177475 Dec: 29.572562393964 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.37
Image Trigger?: NO
Rate S/N Ratio: 11.916375287813 [ if not an image trigger ]
Image S/N Ratio: 7.37
Analysis Position: [ source = BAT ]
RA: 91.6165852177475 Dec: 29.572562393964 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
WARNING: the refined image significance was very low. Treat this
detection with extreme caution!
Angular difference between the analysis and refined position is Usage: arcmin
Partial Coding Fraction: 0.05810547 [ including projection effects ]
Duration
T90: 180.383999973536 +/- 6.36120237776055
Measured from: -167.752000004053
to: 12.6319999694824 [s; relative to TRIGTIME]
T50: 168.495999962091 +/- 161.129707151723
Measured from: -162.487999975681
to: 6.00799998641014 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 3.58000001311302
to: 4.58000001311302 [s; relative to TRIGTIME]
Total Fluence
Measured from: -169.223999977112
to: 15.1920000016689 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.731978 1.426070 1.061347 0.097694
0.264258 0.272897 0.239617 0.214427 [error]
Peak 0.092451 0.078722 0.085755 -0.005488
0.025188 0.025013 0.020858 0.016459 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 184.416 -169.224 15.192
T90 180.384 -167.752 12.632
T50 168.496 -162.488 6.008
Peak 1.000 3.580 4.580
====== 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 -1.977 -0.369 0.335 - - - 1.39e-03 -3.35e-04 3.21e-04 65.960 57
CPL -1.577 -0.578 1.519 44.605 N/A N/A 2.36e-03 N/A N/A 65.640 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 -2.158 -0.597 0.478 - - - 1.32e-02 -4.82e-03 4.35e-03 57.320 57
CPL -2.225 -0.418 1.865 168.643 N/A N/A 1.22e-02 N/A N/A 57.320 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 5.12e-07 7.05e-07 7.16e-07 1.32e-06 2.36e-06 3.25e-06 erg/cm2
90%_error_low -1.31e-07 -1.33e-07 -2.26e-07 -6.72e-07 -5.25e-07 -9.71e-07 erg/cm2
90%_error_hi 1.36e-07 1.33e-07 2.34e-07 1.02e-06 5.43e-07 1.23e-06 erg/cm2
Peak flux PL 1.03e+00 7.04e-01 3.15e-01 1.96e-01 2.14e+00 2.24e+00 ph/cm2/s
90%_error_low -4.07e-01 -1.99e-01 -1.43e-01 -1.30e-01 -6.24e-01 -6.37e-01 ph/cm2/s
90%_error_hi 4.40e-01 1.99e-01 1.35e-01 1.95e-01 6.25e-01 6.38e-01 ph/cm2/s
Fluence CPL 4.96e-07 7.42e-07 7.08e-07 6.51e-07 2.27e-06 2.60e-06 erg/cm2
90%_error_low -1.44e-07 -2.34e-07 -2.65e-07 -4.32e-07 -5.67e-07 -8.69e-07 erg/cm2
90%_error_hi 1.42e-07 1.80e-07 2.49e-07 1.30e-06 5.78e-07 1.63e-06 erg/cm2
Peak flux CPL N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_low -4.07e-01 -1.99e-01 -1.43e-01 -1.30e-01 -6.24e-01 -6.37e-01 ph/cm2/s
90%_error_hi 4.40e-01 1.99e-01 1.35e-01 1.95e-01 6.25e-01 6.38e-01 ph/cm2/s
======================================================================
Special notes of this burst