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: Mon Jan 13 23:12:48 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger450884
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Trigger: 00450884 Segment: 000
BAT Trigger Time: 323878008 [s; MET]
Trigger Stop: 323878072 [s; MET]
UTC: 2011-04-07T14:06:41.167860 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 185.996625275413 Dec: 15.7178020980355 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 14.72
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 14.72
Analysis Position: [ source = BAT ]
RA: 185.996625275413 Dec: 15.7178020980355 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 186.02373181947 Dec: 15.7237201700124 [deg; J2000]
{ 12h 24m 05.7s , +15d 43' 25.4" }
+/- 1.47000361396692 [arcmin] (estimated 90% radius based on SNR)
+/- 0.571553597285787 [arcmin] (formal 1-sigma fit error)
SNR: 17.5425244608379
Angular difference between the analysis and refined position is 1.605319 arcmin
Partial Coding Fraction: 0.7734375 [ including projection effects ]
Duration
T90: 155.567999958992 +/- 21.1666227540407
Measured from: 2.35600000619888
to: 157.923999965191 [s; relative to TRIGTIME]
T50: 71.635999917984 +/- 21.0609268757043
Measured from: 26.3320000171661
to: 97.9679999351501 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 27.6399999856949
to: 28.6399999856949 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.89999997615814
to: 178.51599997282 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.013862 1.361866 0.774008 0.110093
0.074262 0.076154 0.067491 0.060194 [error]
Peak 0.016251 0.019724 0.022775 0.011490
0.005872 0.006217 0.005445 0.004633 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 181.416 -2.900 178.516
T90 155.568 2.356 157.924
T50 71.636 26.332 97.968
Peak 1.000 27.640 28.640
====== 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: CPL)
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 -1.731 -0.126 0.124 - - - 1.13e-03 -8.67e-05 8.59e-05 54.710 57
CPL -0.737 -0.594 0.690 57.781 -8.747 21.701 3.86e-03 -1.98e-03 5.14e-03 45.840 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 -1.057 -0.479 0.532 - - - 4.55e-03 -1.19e-03 1.17e-03 58.680 57
CPL -1.063 -0.472 0.546 9999.360 -9999.360 -9999.360 4.58e-03 -1.17e-03 1.28e-02 58.690 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 3.26e-07 5.20e-07 6.26e-07 1.48e-06 1.90e-06 2.95e-06 erg/cm2
90%_error_low -3.46e-08 -3.57e-08 -6.50e-08 -2.94e-07 -1.51e-07 -3.58e-07 erg/cm2
90%_error_hi 3.56e-08 3.57e-08 6.53e-08 3.40e-07 1.53e-07 3.95e-07 erg/cm2
Peak flux PL 1.23e-01 1.61e-01 1.55e-01 2.65e-01 5.26e-01 7.03e-01 ph/cm2/s
90%_error_low -6.22e-02 -5.50e-02 -4.53e-02 -1.38e-01 -1.40e-01 -1.91e-01 ph/cm2/s
90%_error_hi 7.34e-02 5.14e-02 4.37e-02 2.23e-01 1.40e-01 2.10e-01 ph/cm2/s
Fluence CPL 2.84e-07 5.74e-07 6.24e-07 3.78e-07 1.72e-06 1.86e-06 erg/cm2
90%_error_low -4.23e-08 -4.77e-08 -7.58e-08 -1.92e-07 -1.71e-07 -2.58e-07 erg/cm2
90%_error_hi 4.28e-08 4.90e-08 7.41e-08 4.13e-07 1.78e-07 4.38e-07 erg/cm2
Peak flux CPL 1.23e-01 1.59e-01 1.54e-01 2.97e-01 5.32e-01 7.38e-01 ph/cm2/s
90%_error_low N/A N/A N/A N/A -1.74e-01 -2.73e-01 ph/cm2/s
90%_error_hi N/A N/A N/A N/A 1.64e-01 2.07e-01 ph/cm2/s
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