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 08:01:57 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger286809
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Trigger: 00286809 Segment: 000
BAT Trigger Time: 207731248 [s; MET]
Trigger Stop: 207731312 [s; MET]
UTC: 2007-08-02T07:07:25.872160 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 36.850987019423 Dec: -55.5364556715457 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.15
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.15
Analysis Position: [ source = BAT ]
RA: 36.850987019423 Dec: -55.5364556715457 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 36.9041697866925 Dec: -55.5176559558811 [deg; J2000]
{ 02h 27m 37.0s , -55d 31' 03.6" }
+/- 1.99292433539677 [arcmin] (estimated 90% radius based on SNR)
+/- 0.822207385364391 [arcmin] (formal 1-sigma fit error)
SNR: 11.3572808452912
Angular difference between the analysis and refined position is 2.129434 arcmin
Partial Coding Fraction: 0.734375 [ including projection effects ]
Duration
T90: 15.8000000119209 +/- 2.50065271085923
Measured from: 5.53999999165535
to: 21.3400000035763 [s; relative to TRIGTIME]
T50: 9.03200000524521 +/- 2.45140365771526
Measured from: 8.26800000667572
to: 17.3000000119209 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 6.15599998831749
to: 7.15599998831749 [s; relative to TRIGTIME]
Total Fluence
Measured from: 4.80399999022484
to: 22.7680000066757 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.146602 0.205848 0.105335 0.043499
0.023249 0.023931 0.020836 0.018238 [error]
Peak 0.026411 0.009428 0.018689 0.002672
0.005437 0.005912 0.004984 0.004168 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 17.964 4.804 22.768
T90 15.800 5.540 21.340
T50 9.032 8.268 17.300
Peak 1.000 6.156 7.156
====== 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 -1.750 -0.258 0.246 - - - 1.68e-03 -2.76e-04 2.69e-04 54.980 57
CPL -1.039 -0.560 1.493 58.306 N/A N/A 4.25e-03 N/A N/A 53.810 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 -2.479 -1.486 0.745 - - - 2.32e-03 -2.32e-03 1.45e-03 56.210 57
CPL -1.971 N/A N/A 5.040 N/A N/A 3.77e-03 N/A N/A 56.950 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 4.89e-08 7.71e-08 9.17e-08 2.12e-07 2.79e-07 4.30e-07 erg/cm2
90%_error_low -1.00e-08 -1.08e-08 -2.00e-08 -8.05e-08 -4.66e-08 -1.03e-07 erg/cm2
90%_error_hi 1.04e-08 1.08e-08 2.02e-08 1.08e-07 4.77e-08 1.25e-07 erg/cm2
Peak flux PL 2.48e-01 1.40e-01 5.02e-02 2.36e-02 4.51e-01 4.62e-01 ph/cm2/s
90%_error_low -9.57e-02 -7.44e-02 -5.02e-02 -2.36e-02 -1.41e-01 -1.50e-01 ph/cm2/s
90%_error_hi 9.71e-02 5.12e-02 4.77e-02 6.06e-02 1.38e-01 1.49e-01 ph/cm2/s
Fluence CPL 4.57e-08 8.41e-08 9.02e-08 6.73e-08 2.59e-07 2.87e-07 erg/cm2
90%_error_low -1.16e-08 -1.51e-08 -2.50e-08 -5.59e-08 -5.38e-08 -7.98e-08 erg/cm2
90%_error_hi 1.16e-08 1.63e-08 2.24e-08 1.71e-07 5.71e-08 1.88e-07 erg/cm2
Peak flux CPL 2.32e-01 4.79e-02 5.27e-03 7.69e-04 2.86e-01 2.86e-01 ph/cm2/s
90%_error_low -9.75e-02 -4.79e-02 -5.27e-03 -7.69e-04 -1.42e-01 N/A ph/cm2/s
90%_error_hi 9.63e-02 1.24e-01 7.46e-02 6.19e-02 2.53e-01 N/A ph/cm2/s
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