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 20 04:26:04 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger303105
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Trigger: 00303105 Segment: 000
BAT Trigger Time: 224530476.032 [s; MET]
Trigger Stop: 224530480.128 [s; MET]
UTC: 2008-02-12T17:34:33.462080 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 231.106540249564 Dec: -22.7519170931094 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.18
Image Trigger?: NO
Rate S/N Ratio: 10.5356537528527 [ if not an image trigger ]
Image S/N Ratio: 7.18
Analysis Position: [ source = BAT ]
RA: 231.106540249564 Dec: -22.7519170931094 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 231.145119911576 Dec: -22.7376214715578 [deg; J2000]
{ 15h 24m 34.8s , -22d 44' 15.4" }
+/- 1.48508149503431 [arcmin] (estimated 90% radius based on SNR)
+/- 0.568481594872744 [arcmin] (formal 1-sigma fit error)
SNR: 17.2886398661311
Angular difference between the analysis and refined position is 2.300646 arcmin
Partial Coding Fraction: 0.3554688 [ including projection effects ]
Duration
T90: 126.312000006437 +/- 13.1998475874045
Measured from: -54.7680000066757
to: 71.5439999997616 [s; relative to TRIGTIME]
T50: 50.3360000252724 +/- 15.6678316505333
Measured from: -16.5960000157356
to: 33.7400000095367 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 3.77599999308586
to: 4.77599999308586 [s; relative to TRIGTIME]
Total Fluence
Measured from: -62.2319999933243
to: 78.1119999885559 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.066767 2.049645 1.472653 0.307487
0.119039 0.111430 0.098250 0.084172 [error]
Peak 0.020164 0.049205 0.053276 0.013124
0.010655 0.010211 0.009619 0.007820 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 140.344 -62.232 78.112
T90 126.312 -54.768 71.544
T50 50.336 -16.596 33.740
Peak 1.000 3.776 4.776
====== 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 -1.513 -0.111 0.111 - - - 2.48e-03 -1.64e-04 1.63e-04 78.630 57
CPL -0.230 -0.556 0.640 69.911 -9.096 17.152 1.06e-02 -4.87e-03 1.10e-02 60.460 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 -1.145 -0.367 0.392 - - - 9.65e-03 -2.14e-03 2.11e-03 54.430 57
CPL -0.570 0.570 2.155 146.224 -146.224 -146.224 1.71e-02 -9.34e-03 1.10e-01 54.050 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 4.50e-07 8.19e-07 1.15e-06 3.37e-06 3.29e-06 5.79e-06 erg/cm2
90%_error_low -5.08e-08 -5.80e-08 -9.41e-08 -5.55e-07 -2.31e-07 -6.31e-07 erg/cm2
90%_error_hi 5.26e-08 5.79e-08 9.39e-08 6.24e-07 2.33e-07 6.84e-07 erg/cm2
Peak flux PL 2.83e-01 3.52e-01 3.18e-01 5.00e-01 1.13e+00 1.45e+00 ph/cm2/s
90%_error_low -1.18e-01 -1.00e-01 -7.19e-02 -2.05e-01 -2.61e-01 -3.12e-01 ph/cm2/s
90%_error_hi 1.40e-01 9.80e-02 7.10e-02 2.80e-01 2.65e-01 3.16e-01 ph/cm2/s
Fluence CPL 3.52e-07 9.09e-07 1.23e-06 8.15e-07 3.01e-06 3.30e-06 erg/cm2
90%_error_low -6.19e-08 -7.19e-08 -1.11e-07 -3.31e-07 -2.57e-07 -4.11e-07 erg/cm2
90%_error_hi 6.42e-08 7.35e-08 1.12e-07 5.68e-07 2.60e-07 5.97e-07 erg/cm2
Peak flux CPL 2.41e-01 3.60e-01 3.41e-01 3.07e-01 1.10e+00 1.25e+00 ph/cm2/s
90%_error_low -1.47e-01 -1.07e-01 -8.92e-02 -3.07e-01 -2.71e-01 -3.79e-01 ph/cm2/s
90%_error_hi 1.71e-01 1.09e-01 9.85e-02 2.68e-01 2.76e-01 3.80e-01 ph/cm2/s
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