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: Sat May 9 19:26:25 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger306754
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Trigger: 00306754 Segment: 000
BAT Trigger Time: 227598344.704 [s; MET]
Trigger Stop: 227598356.864 [s; MET]
UTC: 2008-03-19T05:45:42.050320 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 206.354093753083 Dec: 44.0789866539064 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.23
Image Trigger?: NO
Rate S/N Ratio: 15.9687194226713 [ if not an image trigger ]
Image S/N Ratio: 7.23
Analysis Position: [ source = BAT ]
RA: 206.354093753083 Dec: 44.0789866539064 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 206.343666097454 Dec: 44.0742659493499 [deg; J2000]
{ 13h 45m 22.5s , +44d 04' 27.4" }
+/- 1.39127981500385 [arcmin] (estimated 90% radius based on SNR)
+/- 0.491324840393505 [arcmin] (formal 1-sigma fit error)
SNR: 18.9775675179077
Angular difference between the analysis and refined position is 0.531280 arcmin
Partial Coding Fraction: 0.07421875 [ including projection effects ]
Duration
T90: 43.6159999668598 +/- 5.54007363463985
Measured from: 1.33599999547005
to: 44.9519999623299 [s; relative to TRIGTIME]
T50: 22.175999969244 +/- 3.15264968326133
Measured from: 7.54399999976158
to: 29.7199999690056 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 4.15600001811981
to: 5.15600001811981 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.375999987125397
to: 49 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.481759 2.201088 1.975721 0.545452
0.134242 0.143648 0.127533 0.105127 [error]
Peak 0.076547 0.135379 0.050490 0.016615
0.019929 0.021939 0.018646 0.015129 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 49.376 -0.376 49.000
T90 43.616 1.336 44.952
T50 22.176 7.544 29.720
Peak 1.000 4.156 5.156
====== 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 -1.543 -0.116 0.116 - - - 9.56e-03 -6.41e-04 6.41e-04 54.310 57
CPL -1.324 -0.280 0.478 167.660 N/A N/A 1.21e-02 N/A N/A 53.600 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 -1.958 -0.367 0.338 - - - 1.76e-02 -4.42e-03 4.34e-03 44.130 57
CPL 1.323 -2.595 7.526 44.817 -8.439 15.713 1.09e+00 -1.09e+00 1.42e+04 38.680 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 6.28e-07 1.12e-06 1.54e-06 4.39e-06 4.45e-06 7.68e-06 erg/cm2
90%_error_low -7.60e-08 -8.43e-08 -1.26e-07 -7.31e-07 -3.12e-07 -8.26e-07 erg/cm2
90%_error_hi 7.90e-08 8.38e-08 1.25e-07 8.21e-07 3.12e-07 8.91e-07 erg/cm2
Peak flux PL 1.13e+00 8.67e-01 4.46e-01 3.31e-01 2.60e+00 2.77e+00 ph/cm2/s
90%_error_low -3.61e-01 -2.03e-01 -1.35e-01 -1.57e-01 -6.17e-01 -6.41e-01 ph/cm2/s
90%_error_hi 3.90e-01 2.03e-01 1.35e-01 2.10e-01 6.20e-01 6.42e-01 ph/cm2/s
Fluence CPL 6.00e-07 1.15e-06 1.58e-06 3.29e-06 4.41e-06 6.61e-06 erg/cm2
90%_error_low -9.36e-08 -9.49e-08 -1.44e-07 -1.39e-06 -3.25e-07 -1.41e-06 erg/cm2
90%_error_hi 9.34e-08 9.67e-08 1.47e-07 1.34e-06 3.24e-07 9.96e-07 erg/cm2
Peak flux CPL 7.05e-01 1.20e+00 4.68e-01 2.10e-02 2.40e+00 2.40e+00 ph/cm2/s
90%_error_low -7.05e-01 -3.39e-01 -2.51e-01 -2.10e-02 -6.84e-01 -6.89e-01 ph/cm2/s
90%_error_hi 5.14e-01 3.66e-01 2.09e-01 1.68e-01 6.63e-01 6.66e-01 ph/cm2/s
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