batgrbproduct Analysis for Trigger=663164
Analysis Summary
Special note:
- During this time when the CZT bias voltage is at -150v (not the normal -200v; GCN Circ. 18562),
the energy scale in the plots below and in the data from the Quicklook and HEASARC sites
is somewhat off from the proper calibration.
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
- 4) This page will be updated for up to 10 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Fri Nov 13 06:23:19 EST 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger663164/GCN5_download_cron
======================================================================
Trigger: 00663164 Segment: 000
BAT Trigger Time: 469016907.328 [s; MET]
Trigger Stop: 469016908.352 [s; MET]
UTC: 2015-11-12T10:28:11.924200 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 187.784643693739 Dec: 16.6108308426358 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 6.55
Image Trigger?: NO
Rate S/N Ratio: 9.9498743710662 [ if not an image trigger ]
Image S/N Ratio: 6.55
Flight Position: [ source = BAT ]
RA: 187.784643693739 Dec: 16.6108308426358 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 187.809320875559 Dec: 16.6521213681246 [deg; J2000]
{ 12h 31m 14.2s , +16d 39' 07.6" }
+/- 3.42988745734766 [arcmin] (estimated 90% radius based on SNR)
+/- 2.47199239088873 [arcmin] (formal 1-sigma fit error)
SNR: 5.22917108833654
Angular difference between Flight and Ground position is 2.854881 arcmin
Partial Coding Fraction: 0.4765625 [ including projection effects ]
Duration
T90: 0.0239999890327454 +/- 0.004
Measured from: -42.5119999051094
to: -42.4879999160767 [s; relative to TRIGTIME]
T50: 0.0119999647140503 +/- 0.004
Measured from: -42.5039998888969
to: -42.4919999241829 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -42.9959999918938
to: -41.9959999918938 [s; relative to TRIGTIME]
Total Fluence
Measured from: -42.5120000243187
to: -42.4840000271797 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total -0.005164 -0.006449 -0.003420 -0.004141
0.001859 0.002256 0.001503 0.001926 [error]
Peak -0.002737 -0.008112 -0.006759 0.004158
0.012060 0.012448 0.011092 0.012363 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
=== 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 Power-law 1.23e-10 1.27e-09 1.19e-08 7.47e-07 4.94e-08 7.55e-07 erg/cm2
Error 4.17e-10 2.17e-09 1.10e-08 6.29e-07 2.96e-08 6.37e-07 erg/cm2
Peak flux Power-law 3.66e-03 1.98e-02 9.28e-02 1.80e+00 2.89e-01 1.92e+00 ph/cm2/s
Error 1.27e-02 3.51e-02 8.79e-02 1.49e+00 1.91e-01 1.21e+00 ph/cm2/s
Fluence Cutoff-PL 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Error 2.02e-09 1.75e-09 1.10e-08 -------- 3.25e-08 7.23e-06 erg/cm2
Peak flux Cutoff-PL 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 6.25e-02 2.70e-02 7.31e-02 -------- 1.81e-01 1.32e+01 ph/cm2/s
Fluence Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error -------- -------- -------- -------- -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.000 0.000 - - 0.00e+00 0.00e+00 0.000 0
CPL 0.000 0.000 0.0 0.0 0.00e+00 0.00e+00 0.000 0
The chi2 of BB fit is 60.70 which shows a significant improvement in the fit over a PL.
Check the BB fit.
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.000 0.000 - - 0.00e+00 0.00e+00 0.000 0
CPL 0.000 0.000 0.0 0.0 0.00e+00 0.00e+00 0.000 0
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^-{Ph_index} (minus sign is not included in the 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 PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedom
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 0.028 -42.512 -42.484
T90 0.024 -42.512 -42.488
T50 0.012 -42.504 -42.492
Peak 1.000 -42.996 -41.996
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
187.8093 +16.6521 0.0367 43.1 -165.1 0.1403 5.2 TRIG_00663164
------------------------------------------
Foreground time interval of the image:
0.000 1.024 (delta_t = 1.024 [sec])
Background time interval of the image:
-10.328 -3.328 (delta_t = 7.000 [sec])
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 5) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 6) Time of each bin is in the middle of the bin.
1 s binning
From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval
64 ms binning
Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec
16 ms binning
From T100_start-5 s to T100_start+5 s
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of 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.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from -42.512 sec. to -42.484 sec.
Usage: bat_spec_fit_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Cutoff power-law model
Time interval is from -42.512 sec. to -42.484 sec.
Usage: bat_spec_fit_cutoff_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Band function
Time interval is from -42.512 sec. to -42.484 sec.
Usage: bat_spec_fit_band_sys.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Single BB
Usage: bat_spec_fit_bb_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Thermal bremsstrahlung (OTTB)
Usage: bat_spec_fit_brems_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Double BB
Usage: bat_spec_fit_2bb_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Peak spectrum fit
Power-law model
Time interval is from -42.996 sec. to -41.996 sec.
Usage: bat_spec_fit_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Cutoff power-law model
Time interval is from -42.996 sec. to -41.996 sec.
Usage: bat_spec_fit_cutoff_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Band function
Time interval is from -42.996 sec. to -41.996 sec.
Usage: bat_spec_fit_band_sys.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/raid2/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Single BB
Usage: bat_spec_fit_bb_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Thermal bremsstrahlung (OTTB)
Usage: bat_spec_fit_brems_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Double BB
Usage: bat_spec_fit_2bb_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Plot creation:
Fri Nov 13 06:27:44 EST 2015