batgrbproduct analysis for trigger=1197507
batgrbproduct Analysis for Trigger=1197507
Analysis Summary
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 15 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.48
Process Start Time (local time): Tue Nov 21 03:58:08 EST 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1197507/GCN5_download_cron
======================================================================
Trigger: 01197507 Segment: 000
BAT Trigger Time: 722132712 [s; MET]
Trigger Stop: 722132776 [s; MET]
UTC: 2023-11-20T00:24:39.599060 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 299.87026948837 Dec: 35.0640746037254 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 17.79
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 17.79
Flight Position: [ source = BAT ]
RA: 299.87026948837 Dec: 35.0640746037254 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 299.825374591025 Dec: 35.0695650265056 [deg; J2000]
{ 19h 59m 18.1s , +35d 04' 10.4" }
+/- 1.27381175177284 [arcmin] (estimated 90% radius based on SNR)
+/- 0.393106224290419 [arcmin] (formal 1-sigma fit error)
SNR: 21.5262322228204
Angular difference between Flight and Ground position is 2.229216 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 28.0119999647141 +/- 5.84216574372584
Measured from: -88.5519999265671
to: -60.539999961853 [s; relative to TRIGTIME]
T50: 13.8559999465942 +/- 8.5195773730765
Measured from: -81.5119998455048
to: -67.6559998989105 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -85.1679999828339
to: -84.1679999828339 [s; relative to TRIGTIME]
Total Fluence
Measured from: -89.7519999742508
to: -59.4240000247955 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.326349 0.456211 0.213860 -0.023744
0.051745 0.053521 0.045014 0.038163 [error]
Peak 0.030667 0.035786 0.012240 0.003873
0.010365 0.011400 0.009675 0.008307 [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 7.17e-07 1.02e-06 1.07e-06 2.08e-06 3.46e-06 4.89e-06 erg/cm2
Error 4.96e-08 4.40e-08 7.19e-08 2.88e-07 1.66e-07 3.54e-07 erg/cm2
Peak flux Power-law 1.78e-01 2.11e-01 1.82e-01 2.66e-01 6.65e-01 8.36e-01 ph/cm2/s
Error 8.29e-02 6.04e-02 4.90e-02 1.57e-01 1.64e-01 2.06e-01 ph/cm2/s
Fluence Cutoff-PL 6.42e-07 1.10e-06 1.06e-06 6.55e-07 3.20e-06 3.45e-06 erg/cm2
Error 5.96e-08 5.77e-08 8.15e-08 3.29e-07 1.97e-07 3.85e-07 erg/cm2
Peak flux Cutoff-PL 1.77e-01 2.11e-01 1.82e-01 2.64e-01 6.64e-01 8.34e-01 ph/cm2/s
Error 1.32e-01 6.24e-02 5.56e-02 2.25e-01 1.67e-01 2.51e-01 ph/cm2/s
Fluence Band 6.28e-07 1.10e-06 1.03e-06 1.13e-06 3.23e-06 3.91e-06 erg/cm2
Error 6.09e-08 6.05e-08 8.70e-08 -------- 1.96e-07 -------- erg/cm2
Peak flux Band -------- -------- -------- -------- -------- -------- 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 115.21 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: 0.768000 sec.
T50 in the 50-300 keV band: 0.448000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 30.328 -89.752 -59.424
T90 28.012 -88.552 -60.540
T50 13.856 -81.512 -67.656
Peak 1.000 -85.168 -84.168
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.8254 +35.0696 0.0090 0.0 -147.6 4.7172 21.5 TRIG_01197507
------------------------------------------
Foreground time interval of the image:
-13.000 -1.120 (delta_t = 11.880 [sec])
-1.000 59.140 (delta_t = 60.140 [sec])
61.000 61.928 (delta_t = 0.928 [sec])
64.000 70.200 (delta_t = 6.200 [sec])
72.000 75.900 (delta_t = 3.900 [sec])
78.000 80.470 (delta_t = 2.470 [sec])
83.000 86.400 (delta_t = 3.400 [sec])
88.000 91.090 (delta_t = 3.090 [sec])
94.000 96.810 (delta_t = 2.810 [sec])
98.000 98.310 (delta_t = 0.310 [sec])
99.000 100.036 (delta_t = 1.036 [sec])
Background time interval of the image:
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
Multiple GTIs in the spectrum
tstart tstop
-89.752000 -61.770000
-61.000000 -60.400000
-60.000000 -59.424000
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/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-89.752000 -61.770000
-61.000000 -60.400000
-60.000000 -59.424000
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/bat2/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Band function
Multiple GTIs in the spectrum
tstart tstop
-89.752000 -61.770000
-61.000000 -60.400000
-60.000000 -59.424000
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/bat2/BATtools/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 -85.168 sec. to -84.168 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/BATtools/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 -85.168 sec. to -84.168 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/bat2/BATtools/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 -85.168 sec. to -84.168 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/bat2/BATtools/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:
Tue Nov 21 03:59:08 EST 2023