Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
9.8975 -40.9089 0.0153 28.6584 93.7422 0.4120037 12.600 TRIG_01189514
Foreground time interval of the image:
0.196 2.932 (delta_t = 2.736 [sec])
Background time interval of the image:
-344.192 -254.138 (delta_t = 90.054 [sec])
-239.192 0.196 (delta_t = 239.388 [sec])
Lightcurves
Notes:
- 1) The mask-weighted light curves are using the flight position.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) 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.
- 4) 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.
- 5) 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)
Quad-rate summed light curves (from T0-300s to T0+1000s)
Spectral Evolution
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
Time interval is from 0.196 sec. to 2.932 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.40144 ( -0.209397 0.210199 )
Norm@50keV : 9.21022E-03 ( -0.00126762 0.0012641 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.65 using 59 bins.
Reduced chi-squared = 0.958772
# Null hypothesis probability of 5.64e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 2.736 sec: 1.12203 ( -0.154298 0.15456 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.43442e-07 ( -3.63967e-08 3.6782e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.196 sec. to 2.932 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.677504 ( -1.77143 1.22073 )
Epeak [keV] : 63.1787 ( -10.6464 24.4082 )
Norm@50keV : 0.104702 ( -0.104718 0.692852 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.26 using 59 bins.
Reduced chi-squared = 0.790357
# Null hypothesis probability of 8.72e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 2.736 sec: 1.05189 ( -0.161075 0.16068 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.14633e-07 ( -3.79453e-08 4.00829e-08 ) ergs/cm2
Band function
Time interval is from 0.196 sec. to 2.932 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 15.1241 (-1.88658 2.2484)
R^2/D10^2 : 0.137142 (-0.0534826 0.0820523)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 45.06 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.74e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.794e-08 4.352e-09
25- 50 7.184e-08 1.220e-08
50-150 1.122e-07 3.055e-08
15-150 2.020e-07 3.270e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-69.5812 -200)
Norm : 4.67744 (-0.629812 0.629812)
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.78 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.34e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.187e-08 1.818e-08
25- 50 6.131e-08 3.435e-08
50-150 1.345e-07 7.461e-08
15-150 2.276e-07 1.265e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 31.0214 (-31.1534 -31.1534)
R1^2/D10^2 : 3.92862E-03 (-0.00358135 0.189072)
kT2 [keV] : 12.6871 (-12.7214 3.97867)
R2^2/D10^2 : 0.197740 (-0.196864 -0.196864)
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.76 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.62e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.077e-08 6.703e-09
25- 50 6.963e-08 2.271e-08
50-150 1.154e-07 3.945e-08
15-150 2.058e-07 5.525e-08
Peak spectrum fit
Power-law model
Time interval is from 0.496 sec. to 1.496 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.44404 ( -0.286498 0.291337 )
Norm@50keV : 1.07037E-02 ( -0.00210759 0.00209862 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 63.40 using 59 bins.
Reduced chi-squared = 1.11228
# Null hypothesis probability of 2.61e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.31709 ( -0.25746 0.25794 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.0257e-07 ( -2.16436e-08 2.19331e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.496 sec. to 1.496 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.610635 ( -2.4589 1.51318 )
Epeak [keV] : 61.2124 ( -13.3617 42.1045 )
Norm@50keV : 0.124388 ( -0.125894 2.14179 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.22 using 59 bins.
Reduced chi-squared = 1.02179
# Null hypothesis probability of 4.30e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.25430 ( -0.263157 0.26357 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.12935e-08 ( -2.21868e-08 2.38448e-08 ) ergs/cm2
Band function
Time interval is from 0.496 sec. to 1.496 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 14.5948 (-2.53664 3.22747)
R^2/D10^2 : 0.183153 (-0.0936741 0.175172)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.78 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.46e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.202e-09 2.543e-09
25- 50 3.176e-08 9.470e-09
50-150 4.547e-08 1.870e-08
15-150 8.544e-08 2.317e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-100.633 -199.363)
Norm : 5.50750 (-1.05073 1.05098)
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.09e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.371e-08 8.105e-09
25- 50 2.638e-08 1.515e-08
50-150 5.786e-08 3.302e-08
15-150 9.795e-08 5.630e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 11.5546 (-11.6436 -11.6436)
R1^2/D10^2 : 0.291693 (-0.287248 -0.287248)
kT2 [keV] : 25.8495 (-27.3965 -27.3965)
R2^2/D10^2 : 1.03125E-02 (-0.007507 0.312491)
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.94 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.03e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.379e-09 7.540e-09
25- 50 3.145e-08 2.894e-08
50-150 5.272e-08 6.105e-08
15-150 9.355e-08 9.950e-08
Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)
Power-law model
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.40144 ( -0.209397 0.210199 )
Norm@50keV : 9.21022E-03 ( -0.00126762 0.0012641 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.65 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.64e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 2.736 sec: 1.12202 ( -0.154302 0.154543 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.43409e-07 ( -3.6382e-08 3.67995e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.677514 ( -1.77142 1.22073 )
Epeak [keV] : 63.1786 ( -10.6464 24.4082 )
Norm@50keV : 0.104703 ( -0.104719 0.692851 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.26 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.72e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 2.736 sec: 1.05183 ( -0.161064 0.16065 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.14705e-07 ( -3.80214e-08 4.01081e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 5.72e-08
S(50-100 keV) = 8.67e-08
T90 vs. Hardness ratio plot
T90 = 2.53599989414215 sec.
Hardness ratio (energy fluence ratio) = 1.51573
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.99044
Count Ratio (50-100 keV) / (15-25 keV) = 1.38443
Mask shadow pattern
IMX = -3.567144706682876E-02, IMY = -5.453748491462346E-01
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
Spacecraft aspect plot
Bright source in the pre-burst/pre-slew/post-slew images
Pre-burst image of 15-350 keV band
Time interval of the image:
-344.192000 -254.138200
-239.192000 0.196000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
298.4262 -62.6125 2.7 43.5 13.3 3.6914 4.2 ------ UNKNOWN
191.4203 -84.6742 2.6 33.1 -32.1 2.6472 4.5 ------ UNKNOWN
81.4884 -25.7539 3.0 44.2 -153.3 3.1476 3.9 ------ UNKNOWN
123.5538 -64.0929 2.7 34.4 -76.7 3.4448 4.3 ------ UNKNOWN
100.9292 -30.9553 2.3 48.0 -129.0 10.4959 5.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.196000 2.932000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
9.8975 -40.9089 0.9 28.7 93.7 0.4121 12.6 ------ UNKNOWN
69.9783 -8.7153 2.6 56.5 -174.4 0.3447 4.5 ------ UNKNOWN
171.3015 -81.5121 2.3 34.3 -38.9 0.1280 5.1 ------ UNKNOWN
101.2771 -35.0241 2.3 44.8 -125.6 0.3295 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
94.908590 961.808600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
345.9990 -33.1766 2.6 20.5 58.5 5.3695 4.3 ------ UNKNOWN
308.2330 -47.7598 2.6 43.4 13.3 9.0753 4.4 ------ UNKNOWN
345.1778 -71.6926 2.4 33.1 -32.1 6.4403 4.8 ------ UNKNOWN
342.8014 -75.5913 2.5 36.7 -35.1 6.7678 4.7 ------ UNKNOWN
Plot creation:
Sat Sep 30 00:41:24 EDT 2023