batgrbproduct analysis for trigger=1193078
batgrbproduct Analysis for Trigger=1193078
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): Sun Oct 29 06:00:25 EDT 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1193078/GCN5_download_cron
======================================================================
Trigger: 01193078 Segment: 000
BAT Trigger Time: 720158981.824 [s; MET]
Trigger Stop: 720158982.848 [s; MET]
UTC: 2023-10-28T04:09:09.558200 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 214.028595171049 Dec: 20.895108866395 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 18.14
Image Trigger?: NO
Rate S/N Ratio: 63.8435587980495 [ if not an image trigger ]
Image S/N Ratio: 18.14
Flight Position: [ source = BAT ]
RA: 214.028595171049 Dec: 20.895108866395 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 214.01589557065 Dec: 20.8966041024732 [deg; J2000]
{ 14h 16m 03.8s , +20d 53' 47.8" }
+/- 0.664835411457758 [arcmin] (estimated 90% radius based on SNR)
+/- 0.207949195553888 [arcmin] (formal 1-sigma fit error)
SNR: 54.4984172176824
Angular difference between Flight and Ground position is 0.717492 arcmin
Partial Coding Fraction: 0.6875 [ including projection effects ]
Duration
T90: 37.2319999933243 +/- 0.984885784537004
Measured from: -2.03599989414215
to: 35.1960000991821 [s; relative to TRIGTIME]
T50: 15.0759998559952 +/- 1.24903159277049
Measured from: 1.82000017166138
to: 16.8960000276566 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.05999994277954
to: 2.05999994277954 [s; relative to TRIGTIME]
Total Fluence
Measured from: -6.85599994659424
to: 41.9479999542236 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.709005 3.990354 3.296214 0.874428
0.063292 0.068189 0.061408 0.046340 [error]
Peak 0.206791 0.367465 0.402015 0.119638
0.012168 0.014937 0.015327 0.010541 [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 8.65e-07 1.69e-06 2.57e-06 8.46e-06 7.20e-06 1.36e-05 erg/cm2
Error 4.06e-08 4.57e-08 6.52e-08 5.08e-07 1.63e-07 5.34e-07 erg/cm2
Peak flux Power-law 2.07e+00 2.66e+00 2.50e+00 4.14e+00 8.61e+00 1.14e+01 ph/cm2/s
Error 1.74e-01 1.37e-01 1.20e-01 4.21e-01 3.77e-01 5.29e-01 ph/cm2/s
Fluence Cutoff-PL 8.45e-07 1.70e-06 2.59e-06 7.57e-06 7.17e-06 1.27e-05 erg/cm2
Error 5.33e-08 4.75e-08 7.65e-08 1.27e-06 1.74e-07 1.19e-06 erg/cm2
Peak flux Cutoff-PL 1.87e+00 2.72e+00 2.63e+00 2.79e+00 8.49e+00 1.00e+01 ph/cm2/s
Error 2.21e-01 1.50e-01 1.53e-01 7.24e-01 3.87e-01 8.85e-01 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- 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 1.399 0.042 - - 1.53e-02 3.35e-04 39.710 57
CPL 1.312 0.144 455.9 0.0 1.67e-02 2.28e-03 38.870 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.089 0.073 - - 7.43e-02 3.18e-03 61.860 57
CPL 0.682 0.311 184.3 190.1 1.14e-01 3.67e-02 56.410 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: 35.008000 sec.
T50 in the 50-300 keV band: 6.400000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 48.804 -6.856 41.948
T90 37.232 -2.036 35.196
T50 15.076 1.820 16.896
Peak 1.000 1.060 2.060
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
214.0159 +20.8966 0.0035 26.7 -118.5 10.8324 54.5 TRIG_01193078
------------------------------------------
Foreground time interval of the image:
-6.856 41.948 (delta_t = 48.804 [sec])
Background time interval of the image:
-239.824 -6.856 (delta_t = 232.968 [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 -6.856 sec. to 41.948 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.39865 ( -0.0418179 0.0417479 )
Norm@50keV : 1.52647E-02 ( -0.000335516 0.00033536 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.71 using 59 PHA bins.
# Reduced chi-squared = 0.6967 for 57 degrees of freedom
# Null hypothesis probability = 9.604453e-01
Photon flux (15-150 keV) in 48.8 sec: 1.85839 ( -0.0461502 0.046294 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.19985e-06 ( -1.63177e-07 1.63286e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -6.856 sec. to 41.948 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.31151 ( -0.166582 0.121087 )
Epeak [keV] : 455.892 ( -456.238 -456.238 )
Norm@50keV : 1.66651E-02 ( -0.00160176 0.00295527 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.87 using 59 PHA bins.
# Reduced chi-squared = 0.6941 for 56 degrees of freedom
# Null hypothesis probability = 9.604902e-01
Photon flux (15-150 keV) in 48.8 sec: 1.84581 ( -0.0511 0.04366 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.16828e-06 ( -1.76022e-07 1.72166e-07 ) ergs/cm2
Band function
Time interval is from -6.856 sec. to 41.948 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.659895 ( -0.522893 0.877447 )
beta : -1.43616 ( 1.434 0.0559916 )
Epeak [keV] : 62.4261 ( -30.541 102.269 )
Norm@50keV : 4.32656E-02 ( -0.0249858 17.8449 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 36.61 using 59 PHA bins.
# Reduced chi-squared = 0.6657 for 55 degrees of freedom
# Null hypothesis probability = 9.733910e-01
Photon flux (15-150 keV) in 48.8 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 18.5418 ( )
R^2/D10^2 : 0.100489 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 470.46 using 59 PHA bins.
# Reduced chi-squared = 8.2537 for 57 degrees of freedom
# Null hypothesis probability = 2.247091e-66
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.343e-07 1.593e-08
25- 50 1.580e-06 5.392e-08
50-150 3.971e-06 1.393e-07
15-150 5.885e-06 1.366e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-3.39038 -200)
Norm : 7.81427 (-0.171586 0.171586)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.495e-07 2.269e-08
25- 50 1.827e-06 4.587e-08
50-150 4.006e-06 1.000e-07
15-150 6.782e-06 1.610e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.27827 (-0.688616 0.731097)
R1^2/D10^2 : 1.01837 (-0.244232 0.344575)
kT2 [keV] : 32.6669 (-2.86008 3.73961)
R2^2/D10^2 : 1.20468E-02 (-0.00365276 0.00448957)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.239e-07 5.612e-08
25- 50 1.764e-06 9.004e-08
50-150 4.647e-06 2.728e-07
15-150 7.135e-06 3.001e-07
Peak spectrum fit
Power-law model
Time interval is from 1.060 sec. to 2.060 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.08950 ( -0.073249 0.0729618 )
Norm@50keV : 7.43060E-02 ( -0.00318002 0.00317931 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.86 using 59 PHA bins.
# Reduced chi-squared = 1.085 for 57 degrees of freedom
# Null hypothesis probability = 3.068246e-01
Photon flux (15-150 keV) in 1 sec: 8.61048 ( -0.376934 0.377124 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.79537e-07 ( -3.68978e-08 3.69267e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.060 sec. to 2.060 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.681836 ( -0.321733 0.300642 )
Epeak [keV] : 184.301 ( -56.9106 323.312 )
Norm@50keV : 0.113611 ( -0.0299183 0.0435636 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.41 using 59 PHA bins.
# Reduced chi-squared = 1.007 for 56 degrees of freedom
# Null hypothesis probability = 4.596244e-01
Photon flux (15-150 keV) in 1 sec: 8.48732 ( -0.38719 0.38731 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.67217e-07 ( -3.8761e-08 3.8597e-08 ) ergs/cm2
Band function
Time interval is from 1.060 sec. to 2.060 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.667899 ( -0.304721 0.83963 )
beta : -1.53881 ( 1.47338 0.331858 )
Epeak [keV] : 179.413 ( -109.105 305.305 )
Norm@50keV : 0.115314 ( -0.0335478 0.344986 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.30 using 59 PHA bins.
# Reduced chi-squared = 1.024 for 55 degrees of freedom
# Null hypothesis probability = 4.261731e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 20.6340 ( )
R^2/D10^2 : 0.377330 ( )
(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 3.058e-08 2.675e-09
25- 50 1.554e-07 9.700e-09
50-150 4.925e-07 3.550e-08
15-150 6.785e-07 3.640e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 35.0538 ( )
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.729e-08 4.635e-09
25- 50 1.679e-07 7.450e-09
50-150 3.682e-07 1.860e-08
15-150 6.235e-07 3.260e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.74275 (-1.68954 2.15772)
R1^2/D10^2 : 4.11372 (-2.05516 5.09038)
kT2 [keV] : 29.7655 (-3.74023 6.56527)
R2^2/D10^2 : 9.94823E-02 (-0.0493818 0.0596362)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.733e-08 1.198e-08
25- 50 1.570e-07 2.115e-08
50-150 5.517e-07 7.155e-08
15-150 7.661e-07 1.043e-07
Plot creation:
Sun Oct 29 06:03:31 EDT 2023