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 GROUND-DETECTED GRB DATA PROCESSING REPORT
(This burst occurred during telescope slew)
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sat Mar 28 17:53:05 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/GRB150101B
======================================================================
Trigger: 00091964 Segment: 035
BAT Trigger Time: 441818627.453
UTC: 2015-01-01T15:23:34.459 [includes UTCF correction]
Where From?: Ground analysis (best_duration.txt)
NOTE: BAT trigger time for ground-detected burst during slew is the T100 start time.
Analysis Position: [ source = BAT ]
RA: 188.044 Dec: -10.956 [deg; J2000]
Refined Position: [ source = BAT non-slew period ]
RA: 188.043351498012 Dec: -10.9800097121477 [deg; J2000]
{ 12h 32m 10.4s , -10d 58' 48.0" }
+/- 2.43570546524558 [arcmin] (estimated 90% radius based on SNR)
+/- 1.37032457560375 [arcmin] (formal 1-sigma fit error)
SNR: 8.52701995124376
Angular difference between the analysis and refined position is 1.441089 arcmin
Partial Coding Fraction: Unavailable because the burst occurred during slew.
Duration
T90: 0.0119999647140503 +/- 0.00894423672410898
Measured from: 0
to: 0.012 [s; relative to TRIGTIME]
T50: 0.00399994850158691 +/- 0.00565686571343518
Measured from: 0.00400001
to: 0.00800002 [s; relative to TRIGTIME]
====== Table of the duration information =============================
Value tstart tstop
T100 0.016 0.000 0.016
T90 0.012 0.000 0.012
T50 0.004 0.004 0.008
Peak 1.000 -0.490 0.510
====== 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: 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 -1.500 1.500 -3.852 - - - 0.00e+00 0.00e+00 1.43e-03 74.900 57
CPL -1.000 1.000 1.000 80.000 -80.000 -80.000 0.00e+00 N/A N/A 74.900 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 -1.392 -0.615 0.647 - - - 6.26e-03 -2.26e-03 2.26e-03 40.500 57
CPL -0.588 -6.032 3.362 96.554 -96.554 -96.554 1.48e-02 -1.48e-02 3.99e-01 40.060 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 1.28e-09 1.24e-10 4.85e-12 1.98e-13 1.41e-09 1.40e-09 erg/cm2
90%_error_low -9.35e-10 -1.17e-10 -4.81e-12 -1.98e-13 -1.06e-09 -1.05e-09 erg/cm2
90%_error_hi 9.12e-10 1.75e-10 1.84e-11 2.01e-12 1.07e-09 1.07e-09 erg/cm2
Peak flux PL 2.32e-01 2.49e-01 1.90e-01 2.36e-01 7.61e-01 9.08e-01 ph/cm2/s
90%_error_low -1.37e-01 -1.07e-01 -7.88e-02 -1.51e-01 -2.90e-01 -3.27e-01 ph/cm2/s
90%_error_hi 1.70e-01 1.03e-01 7.69e-02 2.59e-01 2.95e-01 3.29e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -9.35e-10 -1.17e-10 -4.81e-12 -1.98e-13 -1.06e-09 -1.05e-09 erg/cm2
90%_error_hi 9.12e-10 1.75e-10 1.84e-11 2.01e-12 1.07e-09 1.07e-09 erg/cm2
Peak flux CPL 1.92e-01 2.62e-01 2.08e-01 1.20e-01 7.34e-01 7.82e-01 ph/cm2/s
90%_error_low -1.92e-01 -1.24e-01 -8.98e-02 -1.20e-01 -2.99e-01 -3.34e-01 ph/cm2/s
90%_error_hi 1.95e-01 1.24e-01 9.66e-02 1.89e-01 3.03e-01 3.64e-01 ph/cm2/s
======================================================================
Special notes of this burst