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 12:29:39 EST 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger617316
======================================================================
Trigger: 00617316 Segment: 000
BAT Trigger Time: 436625512.0
UTC: 2014-11-02T12:51:39.265 [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: 208.614 Dec: -47.100 [deg; J2000]
Refined Position: [ source = BAT pre-slew image ]
RA: 208.614 Dec: -47.1 [deg; J2000]
{ 13h 54m 27.4s , -47d -6' -0.0" }
+/- 6.40765673898 [arcmin] (estimated 90% radius based on SNR)
SNR: 2.14164613761
Angular difference between the analysis and refined position is 0.000000 arcmin
Partial Coding Fraction: 0.06640625 [ including projection effects ]
Duration
T90: 14.4000000357628 +/- 1.6
Measured from: 0
to: 14.4 [s; relative to TRIGTIME]
T50: 8.00000005960464 +/- 1.6
Measured from: 3.2
to: 11.2 [s; relative to TRIGTIME]
====== Table of the duration information =============================
Value tstart tstop
T100 14.400 0.000 14.400
T90 14.400 0.000 14.400
T50 8.000 3.200 11.200
Peak 1.000 0.300 1.300
====== 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 208.614 -47.100 0.000 47.731 -125.269 0.385 2.142 TRIG_00617316 Image time interval: 0.000 to 9.029 [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 0.735 sec. to 9.029 sec. Photon index: ( )
Cutoff power-law model
Time interval is from 0.735 sec. to 9.029 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 = -0.635259688361, IMY = 0.898237421721
Spacecraft aspect plot
Bright source in the event data image
Event data image of 15-350 keV band
Time interval of the image: 0.735000 9.029300 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 245.0185 -15.6037 1.4 23.7 -56.7 0.3240 8.5 3.1 Sco X-1 256.1783 -37.7027 0.0 12.2 -135.0 0.0450 1.5 12.4 4U 1700-377 256.2531 -36.3250 10.1 11.2 -130.0 0.0372 1.1 10.6 GX 349+2 262.9167 -24.8174 12.7 5.1 -33.6 0.0303 0.9 6.6 GX 1+4 264.8824 -44.2956 4.9 15.4 -172.4 0.0731 2.4 11.0 4U 1735-44 268.2483 -1.6095 0.0 27.4 7.9 -0.0400 -1.1 11.8 SW J1753.5-0127 270.3648 -25.0465 7.0 5.3 47.4 0.0563 1.6 4.8 GX 5-1 270.4845 -25.8777 0.0 4.8 55.0 0.0742 2.1 12.7 GRS 1758-258 274.0183 -13.8994 6.0 16.6 30.7 0.0640 1.9 8.3 GX 17+2 275.7683 -30.4794 8.4 8.3 106.7 0.0465 1.4 10.5 H1820-303 284.8826 -24.9861 5.3 17.0 84.6 -0.0766 -2.2 9.2 HT1900.1-2455 288.7239 10.9816 4.9 45.4 35.4 0.2203 2.3 4.9 GRS 1915+105 263.1757 -33.9795 0.0 5.7 -149.1 0.0153 0.4 12.7 GX 354-0 244.4705 4.0478 2.7 39.1 -32.4 0.1963 4.2 ------ UNKNOWN
Webpage updated on: Thu Dec 17 13:21:38 EST 2015