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: Fri Aug 7 22:40:34 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger649916
======================================================================
Trigger: 00649916 Segment: 000
BAT Trigger Time: 459251888 [s; MET]
Trigger Stop: 459251952 [s; MET]
UTC: 2015-07-22T09:57:53.112440 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 218.271508942397 Dec: -35.1965701114099 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.92
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 8.92
Analysis Position: [ source = BAT ]
RA: 218.271508942397 Dec: -35.1965701114099 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 218.272 Dec: -35.1966 [deg; J2000]
{ 14h 33m 05.3s , -35d -11' -47.8" }
+/- 2.34165183892 [arcmin] (estimated 90% radius based on SNR)
SNR: 9.02165393084
Angular difference between the analysis and refined position is 0.024144 arcmin
Partial Coding Fraction: 0.9453125 [ including projection effects ]
Duration
T90: 67.3120000362396 +/- 11.7648860619575
Measured from: -24.0720000267029
to: 43.2400000095367 [s; relative to TRIGTIME]
T50: 40.0000000596046 +/- 18.3425398190956
Measured from: -5.76800000667572
to: 34.2320000529289 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 15.1000000238419
to: 16.1000000238419 [s; relative to TRIGTIME]
Total Fluence
Measured from: -26.4559999704361
to: 45.6240000128746 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.396468 0.374142 0.265958 0.025434
0.050833 0.048023 0.039924 0.032779 [error]
Peak 0.012884 0.023820 0.008152 0.004477
0.006027 0.005706 0.004832 0.003992 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 72.080 -26.456 45.624
T90 67.312 -24.072 43.240
T50 40.000 -5.768 34.232
Peak 1.000 15.100 16.100
====== 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 -1.843 -0.271 0.257 - - - 8.97e-04 -1.40e-04 1.35e-04 51.020 57
CPL -1.838 -1.128 0.346 9999.360 N/A N/A 8.99e-04 N/A N/A 51.030 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 -1.724 -0.649 0.596 - - - 3.16e-03 -1.17e-03 1.10e-03 37.340 57
CPL -1.582 -0.443 4.781 131.171 N/A N/A 3.78e-03 N/A N/A 37.380 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 1.14e-07 1.70e-07 1.90e-07 4.00e-07 5.95e-07 8.74e-07 erg/cm2
90%_error_low -2.34e-08 -2.21e-08 -4.09e-08 -1.54e-07 -9.14e-08 -1.97e-07 erg/cm2
90%_error_hi 2.44e-08 2.21e-08 4.10e-08 2.09e-07 9.32e-08 2.40e-07 erg/cm2
Peak flux PL 1.61e-01 1.42e-01 8.60e-02 7.87e-02 4.23e-01 4.68e-01 ph/cm2/s
90%_error_low -7.75e-02 -4.64e-02 -4.00e-02 -5.40e-02 -1.36e-01 -1.50e-01 ph/cm2/s
90%_error_hi 8.70e-02 4.58e-02 3.99e-02 9.95e-02 1.36e-01 1.51e-01 ph/cm2/s
Fluence CPL 1.10e-07 1.21e-07 1.57e-07 4.47e-07 5.17e-07 8.66e-07 erg/cm2
90%_error_low -2.74e-08 -5.22e-08 -3.69e-08 -1.97e-07 -1.22e-07 -2.54e-07 erg/cm2
90%_error_hi 2.62e-08 4.85e-08 2.90e-08 5.25e-08 1.01e-07 2.34e-07 erg/cm2
Peak flux CPL 1.62e-01 1.41e-01 8.58e-02 8.16e-02 4.24e-01 4.73e-01 ph/cm2/s
90%_error_low -8.69e-02 -4.45e-02 -3.99e-02 N/A -1.41e-01 -1.55e-01 ph/cm2/s
90%_error_hi 8.74e-02 5.64e-02 4.20e-02 N/A 1.36e-01 1.44e-01 ph/cm2/s
======================================================================
Special notes of this burst