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 GROUND-DETECTED GRB DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sun Jan 19 14:26:13 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger360068
======================================================================
Trigger: 00360068 Segment: 000
BAT Trigger Time: 272071304.224
UTC: 2009-08-15T23:21:39.223 [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: 64.473057422274 Dec: -65.9079370199645 [deg; J2000]
Refined Position: [ source = BAT pre-slew image ]
RA: 64.4731 Dec: -65.9079 [deg; J2000]
{ 04h 17m 53.5s , -65d -54' -28.4" }
+/- 2.8644758294 [arcmin] (estimated 90% radius based on SNR)
SNR: 6.76477782494
Angular difference between the analysis and refined position is 0.002454 arcmin
Partial Coding Fraction: 0.765625 [ including projection effects ]
Duration
T90: 0.576000034809113 +/- 0.271529006335861
Measured from: 0
to: 0.576 [s; relative to TRIGTIME]
T50: 0.255999982357025 +/- 0.181019365655138
Measured from: 0.192
to: 0.448 [s; relative to TRIGTIME]
====== Table of the duration information =============================
Value tstart tstop
T100 0.704 0.000 0.704
T90 0.576 0.000 0.576
T50 0.256 0.192 0.448
Peak 1.000 -0.148 0.852
====== 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 -0.871 -0.432 0.485 - - - 5.55e-03 -1.52e-03 1.47e-03 56.900 57
CPL 0.102 -1.350 3.556 131.178 -131.178 -131.178 1.40e-02 -1.40e-02 2.42e-01 56.290 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 -0.752 -0.490 0.573 - - - 3.96e-03 -1.29e-03 1.22e-03 51.440 57
CPL 0.536 -1.712 3.859 126.719 -126.719 -126.719 1.23e-02 -1.23e-02 8.42e-01 50.810 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 2.78e-09 7.53e-09 1.65e-08 9.45e-08 4.44e-08 1.21e-07 erg/cm2
90%_error_low -1.39e-09 -2.58e-09 -4.37e-09 -4.63e-08 -1.17e-08 -4.94e-08 erg/cm2
90%_error_hi 1.70e-09 2.50e-09 4.31e-09 7.39e-08 1.18e-08 7.36e-08 erg/cm2
Peak flux PL 8.00e-02 1.26e-01 1.50e-01 3.46e-01 4.56e-01 7.02e-01 ph/cm2/s
90%_error_low -4.64e-02 -5.29e-02 -4.18e-02 -1.70e-01 -1.36e-01 -2.08e-01 ph/cm2/s
90%_error_hi 6.20e-02 5.27e-02 4.16e-02 2.68e-01 1.38e-01 2.39e-01 ph/cm2/s
Fluence CPL 2.08e-09 7.78e-09 1.82e-08 3.49e-08 4.27e-08 6.30e-08 erg/cm2
90%_error_low -1.68e-09 -3.04e-09 -5.35e-09 -2.84e-08 -1.27e-08 -3.11e-08 erg/cm2
90%_error_hi 2.18e-09 2.93e-09 6.06e-09 1.03e-07 1.24e-08 7.85e-08 erg/cm2
Peak flux CPL 5.03e-02 1.24e-01 1.72e-01 1.47e-01 4.30e-01 4.92e-01 ph/cm2/s
90%_error_low -5.03e-02 -7.36e-02 -2.97e-02 -1.47e-01 -1.48e-01 -2.04e-01 ph/cm2/s
90%_error_hi 8.30e-02 6.05e-02 6.57e-02 2.66e-01 1.50e-01 4.11e-01 ph/cm2/s
======================================================================
Special notes of this burst