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 GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Mon Jan 20 03:45:12 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger306757
======================================================================
Trigger: 00306757 Segment: 000
BAT Trigger Time: 227599971.904 [s; MET]
Trigger Stop: 227599972.928 [s; MET]
UTC: 2008-03-19T06:12:49.250280 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 217.925715751808 Dec: 36.3029283586765 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 22.5
Image Trigger?: NO
Rate S/N Ratio: 206.729291586848 [ if not an image trigger ]
Image S/N Ratio: 22.5
Analysis Position: [ source = BAT ]
RA: 217.925715751808 Dec: 36.3029283586765 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 217.919211664027 Dec: 36.2998652608731 [deg; J2000]
{ 14h 31m 40.6s , +36d 17' 59.5" }
+/- 0.343203591950714 [arcmin] (estimated 90% radius based on SNR)
+/- 0.0792496452329713 [arcmin] (formal 1-sigma fit error)
SNR: 140.157316435534
Angular difference between the analysis and refined position is 0.364266 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 124.859999984503 +/- 3.09526864580048
Measured from: 5.04399999976158
to: 129.903999984264 [s; relative to TRIGTIME]
T50: 25.8040000200272 +/- 0.11063454434877
Measured from: 15.9279999732971
to: 41.7319999933243 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 16.8719999790192
to: 17.8719999790192 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.84400001168251
to: 302.047999978065 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 26.720848 41.005477 41.445959 14.857236
0.092004 0.105938 0.106957 0.088348 [error]
Peak 0.658792 1.082273 1.175623 0.432635
0.010801 0.013718 0.015119 0.012015 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 305.892 -3.844 302.048
T90 124.860 5.044 129.904
T50 25.804 15.928 41.732
Peak 1.000 16.872 17.872
====== 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 -1.039 -0.019 0.019 - - - 3.23e-02 -4.04e-04 4.01e-04 39.720 57
CPL -0.964 -0.022 0.020 999.060 -111.907 -999.060 3.43e-02 -2.15e-03 -1.34e-03 56.760 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 -0.989 -0.034 0.034 - - - 2.18e-01 -3.92e-03 3.91e-03 37.510 57
CPL -0.984 -0.033 0.066 9999.360 -9999.360 -9999.360 2.19e-01 -3.93e-03 7.83e-03 37.750 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 6.66e-06 1.62e-05 3.16e-05 1.52e-04 8.55e-05 2.06e-04 erg/cm2
90%_error_low -1.82e-07 -2.74e-07 -3.07e-07 -3.36e-06 -8.37e-07 -3.30e-06 erg/cm2
90%_error_hi 1.85e-07 2.74e-07 3.07e-07 3.41e-06 8.35e-07 3.33e-06 erg/cm2
Peak flux PL 2.13e-03 3.25e-02 2.80e-01 3.19e+01 1.24e+00 3.13e+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 6.64e-06 1.62e-05 3.17e-05 1.51e-04 8.55e-05 2.05e-04 erg/cm2
90%_error_low -1.82e-07 -2.74e-07 -3.07e-07 N/A -8.31e-07 -3.46e-06 erg/cm2
90%_error_hi 1.84e-07 2.74e-07 3.07e-07 N/A 8.27e-07 3.30e-06 erg/cm2
Peak flux CPL 5.50e+00 7.52e+00 7.58e+00 1.38e+01 2.51e+01 3.44e+01 ph/cm2/s
90%_error_low N/A N/A N/A N/A -4.64e-01 N/A ph/cm2/s
90%_error_hi N/A N/A N/A N/A 4.65e-01 N/A ph/cm2/s
======================================================================
Special notes of this burst