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.
==========================================================================
BAT GROUND-DETECTED GRB DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Thu Dec 17 19:49:49 EST 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger293250
======================================================================
Trigger: 00293250 Segment: 000
BAT Trigger Time: 213345699.2
UTC: 2007-10-06T06:41:36.928 [includes UTCF correction]
Where From?: Ground analysis (best_duration.txt)
NOTE: BAT trigger time for ground-detected burst is the T100 start time.
Analysis Position: [ source = GCN ]
RA: 335.282 Dec: -23.152 [deg; J2000]
Refined Position: [ source = BAT pre-slew image ]
RA: 335.281762676 Dec: -23.1520164772 [deg; J2000]
{ 22h 21m 07.6s , -23d -9' -7.3" }
+/- 2.21989738823 [arcmin] (estimated 90% radius based on SNR)
SNR: 9.73674758712
Angular difference between the analysis and refined position is 0.013130 arcmin
Partial Coding Fraction: 0.05566406 [ including projection effects ]
Duration
T90: 43.2000000178814 +/- 1.6
Measured from: 1.6
to: 44.8 [s; relative to TRIGTIME]
T50: 24.0000000298023 +/- 1.6
Measured from: 11.2
to: 35.2 [s; relative to TRIGTIME]
====== Table of the duration information =============================
Value tstart tstop
T100 46.400 0.000 46.400
T90 43.200 1.600 44.800
T50 24.000 11.200 35.200
Peak 1.000 35.500 36.500
====== 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 N/A N/A N/A - - - N/A N/A N/A N/A N/A
CPL N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
=== 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 N/A N/A N/A - - - N/A N/A N/A N/A N/A
CPL N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
=== 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 N/A N/A N/A N/A N/A N/A erg/cm2
Image
15.0-350.0 keV image (Event data with DETECTION mask)
#RAcent DECcent POSerr Theta Phi Peak_Cts SNR Name 335.282 -23.152 0.020 47.279 131.130 1.581 9.737 TRIG_00293250 Image time interval: 10.800 to 20.874 [sec]
Light Curves
Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.
Best duration plot
Full-time range; 1 s binning
Other quick-look light curves:
- 64 ms binning (zoomed)
- 16 ms binning (zoomed)
- 8 ms binning (zoomed)
- 2 ms binning (zoomed)
- SN=5 or 10 s binning (full-time range)
- Raw light curve
Spectra
- 64 ms binning (zoomed)
- 16 ms binning (zoomed)
- 8 ms binning (zoomed)
- 2 ms binning (zoomed)
- SN=5 or 10 s binning (full-time range)
- Raw light curve
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
- 3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
Time averaged spectrum fit using the average DRM
Power-law model
Multiple GTIs in the spectrum tstart tstop Photon index: ( )
Cutoff power-law model
Multiple GTIs in the spectrum tstart tstop Photon index: ( )
1-s peak spectrum fit
Power-law model
Time interval is from 10.800 sec. to 20.874 sec. Photon index: ( )
Cutoff power-law model
Time interval is from 10.800 sec. to 20.874 sec. Photon index: ( )
Time-resolved spectra
Distribution
T90 vs. Hardness ratio plot
T90 = N/A sec. Hardness ratio (energy fluence ratio) = N/A
S(15-50 keV) vs. S(50-150 keV) plot
S(15-50 keV) = N/A S(50-150 keV) = N/A
The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.
Mask shadow pattern (with DETECTION mask)
IMX = -0.712295025523, IMY = -0.81564534472
Spacecraft aspect plot
Bright source in the event data image
Event data image of 15-350 keV band
Time interval of the image: 10.800000 20.874400 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 263.1399 -24.7097 8.0 51.8 -139.0 0.1955 1.4 7.5 GX 1+4 268.3182 -1.3403 5.1 35.4 -113.3 0.1221 2.3 7.4 SW J1753.5-0127 270.2113 -25.1225 3.1 47.4 -145.1 0.2278 3.7 4.7 GX 5-1 270.1892 -25.6593 7.1 47.8 -145.6 -0.1082 -1.6 7.9 GRS 1758-258 273.9218 -13.8788 27.3 37.1 -136.4 -0.0197 -0.4 10.6 GX 17+2 276.0116 -30.5402 4.2 48.3 -155.1 0.1659 2.7 11.3 H1820-303 284.9642 -24.8699 6.7 39.3 -160.7 -0.0729 -1.7 4.9 HT1900.1-2455 288.8448 10.9386 4.2 12.7 -93.8 0.0858 2.8 2.8 GRS 1915+105 299.5890 35.1848 0.8 24.4 -9.5 0.4384 14.2 1.0 Cyg X-1 308.1241 41.1026 4.9 30.7 4.2 0.0861 2.3 9.0 Cyg X-3 326.2903 38.1348 29.3 35.0 29.6 0.0174 0.4 12.5 Cyg X-2 263.1202 -33.8842 3.7 57.9 -147.4 0.7517 3.1 7.2 GX 354-0 350.0016 27.8095 1.9 48.2 57.1 1.6962 6.1 ------ UNKNOWN 335.2817 -23.1520 1.2 47.3 131.1 1.5804 9.7 ------ UNKNOWN 263.2731 18.6151 2.3 37.9 -78.8 0.3299 4.9 ------ UNKNOWN 261.5586 -22.1260 3.0 51.4 -135.3 0.6060 3.9 ------ UNKNOWN
Webpage updated on: Thu Dec 17 19:53:24 EST 2015