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.
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BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Thu May 31 09:04:50 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger817564
======================================================================
Trigger: 00817564 Segment: 000
BAT Trigger Time: 543635603.52 [s; MET]
Trigger Stop: 543635604.032 [s; MET]
UTC: 2018-03-25T01:53:02.842480 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 157.431990917944 Dec: 24.4392523978687 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.22
Image Trigger?: NO
Rate S/N Ratio: 19.6468827043885 [ if not an image trigger ]
Image S/N Ratio: 10.22
Analysis Position: [ source = BAT ]
RA: 157.431990917944 Dec: 24.4392523978687 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 157.416106976261 Dec: 24.4610275428613 [deg; J2000]
{ 10h 29m 39.9s , +24d 27' 39.7" }
+/- 1.13616704732073 [arcmin] (estimated 90% radius based on SNR)
+/- 0.456153674740327 [arcmin] (formal 1-sigma fit error)
SNR: 25.3463397901683
Angular difference between the analysis and refined position is 1.568325 arcmin
Partial Coding Fraction: 0.8984375 [ including projection effects ]
Duration
T90: 92.8279999494553 +/- 1.51999085311522
Measured from: 1.75199997425079
to: 94.5799999237061 [s; relative to TRIGTIME]
T50: 5.0479998588562 +/- 0.488016404579719
Measured from: 78.5960000753403
to: 83.6439999341965 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 80.7519999742508
to: 81.7519999742508 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.00800001621246338
to: 107.888000011444 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.016937 3.416420 3.178550 0.875909
0.068329 0.073198 0.065948 0.055128 [error]
Peak 0.213220 0.406674 0.461865 0.171989
0.010047 0.012983 0.013887 0.010496 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 107.896 -0.008 107.888
T90 92.828 1.752 94.580
T50 5.048 78.596 83.644
Peak 1.000 80.752 81.752
====== 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 -1.203 -0.046 0.047 - - - 5.84e-03 -1.47e-04 1.47e-04 68.730 57
CPL -0.974 -0.181 0.189 257.581 -89.999 653.615 7.37e-03 -1.21e-03 1.50e-03 64.040 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
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 -0.895 -0.061 0.061 - - - 8.14e-02 -2.78e-03 2.78e-03 42.450 57
CPL -0.845 -0.076 0.243 999.724 -999.724 -999.724 8.73e-02 -8.12e-03 2.04e-02 42.590 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 6.10e-07 1.35e-06 2.34e-06 9.44e-06 6.39e-06 1.37e-05 erg/cm2
90%_error_low -3.21e-08 -4.17e-08 -6.62e-08 -6.16e-07 -1.69e-07 -6.46e-07 erg/cm2
90%_error_hi 3.28e-08 4.15e-08 6.61e-08 6.46e-07 1.69e-07 6.72e-07 erg/cm2
Peak flux PL 1.07e-03 1.09e-02 1.19e-01 1.29e+01 5.32e-01 1.27e+01 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 5.74e-07 1.36e-06 2.39e-06 7.01e-06 6.31e-06 1.13e-05 erg/cm2
90%_error_low -4.16e-08 -4.40e-08 -7.75e-08 -1.41e-06 -1.82e-07 -1.41e-06 erg/cm2
90%_error_hi 4.24e-08 4.42e-08 7.81e-08 1.85e-06 1.82e-07 1.83e-06 erg/cm2
Peak flux CPL 1.86e+00 2.74e+00 2.96e+00 5.87e+00 9.33e+00 1.30e+01 ph/cm2/s
90%_error_low -2.03e-01 -1.42e-01 -1.39e-01 -1.55e+00 -3.53e-01 -1.15e+00 ph/cm2/s
90%_error_hi 1.51e-01 1.08e-01 1.24e-01 4.46e-01 3.34e-01 8.93e-01 ph/cm2/s
======================================================================
Special notes of this burst