batgrbproduct analysis for trigger=1111002
batgrbproduct Analysis for Trigger=1111002
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 Jun 21 07:24:17 EDT 2022
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1111002/GCN5_download_cron
======================================================================
Trigger: 01111002 Segment: 000
BAT Trigger Time: 677377480 [s; MET]
Trigger Stop: 677377544 [s; MET]
UTC: 2022-06-20T00:24:10.649800 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 299.392809534758 Dec: 35.0017741249224 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.71
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.71
Flight Position: [ source = BAT ]
RA: 299.392809534758 Dec: 35.0017741249224 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 299.51371277666 Dec: 35.0712050501658 [deg; J2000]
{ 19h 58m 03.3s , +35d 04' 16.3" }
+/- 1.74419183457616 [arcmin] (estimated 90% radius based on SNR)
+/- 0.624837141206885 [arcmin] (formal 1-sigma fit error)
SNR: 13.7399052718282
Angular difference between Flight and Ground position is 7.254904 arcmin
Partial Coding Fraction: 0.703125 [ including projection effects ]
Duration
T90: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
T50: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 64 second)
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.688403 0.842008 0.453441 0.141330
0.071071 0.073739 0.067022 0.065899 [error]
Peak 0.688403 0.842008 0.453441 0.141330
0.071071 0.073739 0.067022 0.065899 [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 2.01e-07 3.22e-07 3.89e-07 9.23e-07 1.18e-06 1.83e-06 erg/cm2
Error 3.08e-08 3.35e-08 6.39e-08 3.05e-07 1.50e-07 3.69e-07 erg/cm2
Peak flux Power-law 1.02e-01 8.96e-02 5.42e-02 4.95e-02 2.67e-01 2.95e-01 ph/cm2/s
Error 1.59e-02 9.34e-03 8.59e-03 1.52e-02 2.78e-02 3.17e-02 ph/cm2/s
Fluence Cutoff-PL 1.87e-07 3.57e-07 3.74e-07 2.29e-07 1.06e-06 1.15e-06 erg/cm2
Error 3.45e-08 4.82e-08 7.83e-08 -------- 1.77e-07 4.26e-07 erg/cm2
Peak flux Cutoff-PL 9.35e-02 9.88e-02 5.32e-02 1.61e-02 2.57e-01 2.62e-01 ph/cm2/s
Error 1.80e-02 1.31e-02 1.02e-02 -------- 2.90e-02 3.48e-02 ph/cm2/s
Fluence Band 1.81e-07 3.67e-07 3.56e-07 4.78e-07 1.08e-06 1.39e-06 erg/cm2
Error 3.54e-08 -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 9.11e-02 1.02e-01 5.08e-02 2.76e-02 2.58e-01 2.71e-01 ph/cm2/s
Error 1.87e-02 1.35e-02 1.01e-02 -------- 2.87e-02 -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.725 0.186 - - 1.99e-03 2.40e-04 59.930 57
CPL 0.863 0.933 55.4 80.9 6.23e-03 1.28e-02 56.590 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.725 0.186 - - 1.99e-03 2.40e-04 59.930 57
CPL 0.863 0.933 55.4 80.9 6.23e-03 1.28e-02 56.590 56
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 64.000 0.000 64.000
T90 64.000 0.000 64.000
T50 64.000 0.000 64.000
Peak 64.000 0.000 64.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.5137 +35.0712 0.0141 22.7 -66.9 2.7354 13.7 TRIG_01111002
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.72477 ( -0.182739 0.188605 )
Norm@50keV : 1.98927E-03 ( -0.000242337 0.000238356 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.93 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.699012e-01
Photon flux (15-150 keV) in 64 sec: 0.266524 ( -0.027754 0.027757 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17661e-06 ( -1.48286e-07 1.5171e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.862883 ( -1.05763 0.808583 )
Epeak [keV] : 55.3525 ( -12.706 149.142 )
Norm@50keV : 6.22939E-03 ( -0.00622992 0.0194027 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.59 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 56 degrees of freedom
# Null hypothesis probability = 4.529158e-01
Photon flux (15-150 keV) in 64 sec: 0.257348 ( -0.029 0.029005 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.062e-06 ( -1.7081e-07 1.83155e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.401654 ( -0.950837 0.388218 )
beta : -2.27969 ( 2.28369 0.552397 )
Epeak [keV] : 46.1776 ( -25.3205 48.6066 )
Norm@50keV : 1.24525E-02 ( -0.0129514 97.4072 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.51 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 55 degrees of freedom
# Null hypothesis probability = 4.555013e-01
Photon flux (15-150 keV) in 64 sec: 0.258083 ( 6.74192 -0.028704 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.08268e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.0992 (-1.24805 1.44358)
R^2/D10^2 : 8.72115E-02 (-0.0318157 0.0485031)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.78 using 59 PHA bins.
# Reduced chi-squared = 1.172 for 57 degrees of freedom
# Null hypothesis probability = 1.762145e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.439e-07 2.797e-08
25- 50 4.116e-07 5.536e-08
50-150 2.884e-07 7.475e-08
15-150 8.440e-07 1.101e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 109.181 (-37.4495 72.0616)
Norm : 1.15453 (-0.147428 0.192819)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.930e-07 2.915e-08
25- 50 3.394e-07 5.126e-08
50-150 5.772e-07 2.527e-07
15-150 1.110e-06 2.762e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.26404 (-3.67788 2.08726)
R1^2/D10^2 : 0.201292 (-0.100207 0.147412)
kT2 [keV] : 29.7505 (-25.2928 -29.8952)
R2^2/D10^2 : 1.38915E-03 (-0.00129458 0.0283895)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.752e-07 5.645e-08
25- 50 3.773e-07 1.612e-07
50-150 5.650e-07 3.057e-07
15-150 1.118e-06 5.092e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.72477 ( -0.182739 0.188605 )
Norm@50keV : 1.98927E-03 ( -0.000242337 0.000238356 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.93 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.699012e-01
Photon flux (15-150 keV) in 64 sec: 0.266524 ( -0.027754 0.027757 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17661e-06 ( -1.48286e-07 1.5171e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.862883 ( -1.05763 0.808583 )
Epeak [keV] : 55.3525 ( -12.706 149.142 )
Norm@50keV : 6.22939E-03 ( -0.00622992 0.0194027 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.59 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 56 degrees of freedom
# Null hypothesis probability = 4.529158e-01
Photon flux (15-150 keV) in 64 sec: 0.257348 ( -0.029 0.029005 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.062e-06 ( -1.7081e-07 1.83155e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.401654 ( -0.950837 0.388218 )
beta : -2.27969 ( 2.28369 0.552397 )
Epeak [keV] : 46.1776 ( -25.3205 48.6066 )
Norm@50keV : 1.24525E-02 ( -0.0129514 97.4072 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.51 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 55 degrees of freedom
# Null hypothesis probability = 4.555013e-01
Photon flux (15-150 keV) in 64 sec: 0.258083 ( 6.74192 -0.028704 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.08268e-06 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.0992 (-1.24805 1.44358)
R^2/D10^2 : 8.72115E-02 (-0.0318157 0.0485031)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.439e-07 2.925e-08
25- 50 4.116e-07 5.264e-08
50-150 2.884e-07 8.144e-08
15-150 8.440e-07 1.098e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 109.181 (-37.4495 72.0616)
Norm : 1.15453 (-0.147428 0.192819)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.930e-07 2.739e-08
25- 50 3.394e-07 4.442e-08
50-150 5.772e-07 2.823e-07
15-150 1.110e-06 3.011e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.26404 (-3.67788 2.08726)
R1^2/D10^2 : 0.201292 (-0.100207 0.150334)
kT2 [keV] : 29.7505 (-25.2928 -29.8952)
R2^2/D10^2 : 1.38915E-03 (-0.00129458 0.0283895)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.752e-07 6.769e-08
25- 50 3.773e-07 1.653e-07
50-150 5.650e-07 3.020e-07
15-150 1.118e-06 5.026e-07
Plot creation:
Tue Jun 21 07:27:18 EDT 2022