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 GROUND-DETECTED GRB DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Wed Oct 11 13:10:39 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/ground_detect_bursts/scripts
======================================================================
Trigger: 00778019 Segment: 000
BAT Trigger Time: 529361984.0
UTC: 2017-10-10T20:59:24.168 [includes UTCF correction]
Where From?: Ground analysis (best_duration.txt)
NOTE: BAT trigger time for ground-detected burst is the T100 start time.
Analysis Position: [ source = GCN ]
RA: 34.1224 Dec: -54.4044 [deg; J2000]
Refined Position: [ source = BAT pre-slew image ]
RA: 34.123266452 Dec: -54.4101842469 [deg; J2000]
{ 02h 16m 29.6s , -54d -24' -36.7" }
+/- 1.58230542526 [arcmin] (estimated 90% radius based on SNR)
SNR: 15.7933676234
Angular difference between the analysis and refined position is 0.348371 arcmin
Partial Coding Fraction: 0.7109375 [ including projection effects ]
Duration
T90: 30.4000000357628 +/- 1.6
Measured from: 0
to: 30.4 [s; relative to TRIGTIME]
T50: 17.6000000238419 +/- 1.6
Measured from: 6.4
to: 24 [s; relative to TRIGTIME]
====== Table of the duration information =============================
Value tstart tstop
T100 32.000 0.000 32.000
T90 30.400 0.000 30.400
T50 17.600 6.400 24.000
Peak 1.000 0.300 1.300
====== 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 -1.405 -0.176 0.175 - - - 4.02e-03 -4.18e-04 4.16e-04 52.390 57
CPL -0.618 -0.758 0.932 88.237 -24.233 549.016 9.97e-03 N/A N/A 49.240 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 N/A N/A N/A - - - N/A N/A N/A N/A N/A
CPL N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
=== 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 4.74e-08 9.24e-08 1.40e-07 4.57e-07 3.92e-07 7.36e-07 erg/cm2
90%_error_low -7.99e-09 -9.83e-09 -1.87e-08 -1.19e-07 -4.54e-08 -1.35e-07 erg/cm2
90%_error_hi 8.35e-09 9.77e-09 1.86e-08 1.44e-07 4.60e-08 1.56e-07 erg/cm2
Peak flux PL N/A N/A N/A N/A N/A N/A ph/cm2/s
Special notes of this burst