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
187.9283 3.6653 0.0062 24.3500 -166.6983 2.6110864 31.068 TRIG_00767284
Foreground time interval of the image:
-24.332 16.525 (delta_t = 40.857 [sec])
Background time interval of the image:
-239.576 -24.332 (delta_t = 215.244 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
8 ms binning
From T100_start-3 s to T100_start+3 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
2 ms binning
From T100_start-1 s to T100_start+1 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
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 -24.332 sec. to 157.740 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.22674 ( -0.0704736 0.0699957 )
Norm@50keV : 2.56540E-03 ( -9.32103e-05 9.31616e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.22 using 59 PHA bins.
# Reduced chi-squared = 1.074 for 57 degrees of freedom
# Null hypothesis probability = 3.270881e-01
Photon flux (15-150 keV) in 182.1 sec: 0.302310 ( -0.01168 0.01173 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.70501e-06 ( -1.85826e-07 1.86467e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -24.332 sec. to 157.740 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.22699 ( -0.127725 0.06651 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 2.57746E-03 ( -9.32387e-05 0.00019752 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.34 using 59 PHA bins.
# Reduced chi-squared = 1.095 for 56 degrees of freedom
# Null hypothesis probability = 2.905632e-01
Photon flux (15-150 keV) in 182.1 sec: 0.302231 ( -0.011693 0.011719 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.72868e-06 ( -2.11371e-07 1.60768e-07 ) ergs/cm2
Band function
Time interval is from -24.332 sec. to 157.740 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] : 19.8722 ( )
R^2/D10^2 : 1.34822E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 271.80 using 59 PHA bins.
# Reduced chi-squared = 4.7685 for 57 degrees of freedom
# Null hypothesis probability = 9.575167e-30
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.874e-07 1.375e-08
25- 50 9.294e-07 5.208e-08
50-150 2.718e-06 1.684e-07
15-150 3.835e-06 1.721e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 1.27096 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 134.95 using 59 PHA bins.
# Reduced chi-squared = 2.3676 for 57 degrees of freedom
# Null hypothesis probability = 2.877471e-08
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.763e-07 2.340e-08
25- 50 1.109e-06 4.389e-08
50-150 2.431e-06 1.011e-07
15-150 4.116e-06 1.712e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.14071 (-0.811929 0.88536)
R1^2/D10^2 : 0.181073 (-0.0526234 0.0781709)
kT2 [keV] : 40.8721 (-5.82694 8.82622)
R2^2/D10^2 : 1.21529E-03 (-0.000498882 0.000690597)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.96 using 59 PHA bins.
# Reduced chi-squared = 0.8901 for 55 degrees of freedom
# Null hypothesis probability = 7.035055e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.471e-07 5.336e-08
25- 50 1.044e-06 8.140e-08
50-150 3.364e-06 4.971e-07
15-150 4.855e-06 4.898e-07
Peak spectrum fit
Power-law model
Time interval is from 0.152 sec. to 1.152 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.643958 ( -0.267078 0.242263 )
Norm@50keV : 1.04790E-02 ( -0.00155162 0.00148994 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 87.30 using 59 PHA bins.
# Reduced chi-squared = 1.532 for 57 degrees of freedom
# Null hypothesis probability = 6.040391e-03
Photon flux (15-150 keV) in 1 sec: 1.21745 ( -0.16185 0.16247 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.31256e-07 ( -1.72914e-08 1.73444e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.152 sec. to 1.152 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.640653 ( -0.344013 0.239797 )
Epeak [keV] : 9999.34 ( -9999.36 -9999.36 )
Norm@50keV : 1.05776E-02 ( -0.00142554 0.00543635 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 87.34 using 59 PHA bins.
# Reduced chi-squared = 1.560 for 56 degrees of freedom
# Null hypothesis probability = 4.653480e-03
Photon flux (15-150 keV) in 1 sec: 1.21715 ( -0.16182 0.16243 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.22098e-09 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.152 sec. to 1.152 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] : 31.1489 (-7.03481 11.6275)
R^2/D10^2 : 1.64609E-02 (-0.0163841 0.0178426)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 103.10 using 59 PHA bins.
# Reduced chi-squared = 1.8088 for 57 degrees of freedom
# Null hypothesis probability = 1.791808e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.441e-09 7.885e-10
25- 50 1.529e-08 3.726e-09
50-150 1.031e-07 2.258e-08
15-150 1.209e-07 2.696e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.361 ( )
Norm : 4.76894 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 126.61 using 59 PHA bins.
# Reduced chi-squared = 2.2212 for 57 degrees of freedom
# Null hypothesis probability = 3.366781e-07
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.188e-08 6.680e-09
25- 50 2.284e-08 1.279e-08
50-150 5.010e-08 2.823e-08
15-150 8.482e-08 4.828e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.40 using 59 PHA bins.
#Fit statistic : Chi-Squared = 80.39 using 59 PHA bins.
#Fit statistic : Chi-Squared = 80.38 using 59 PHA bins.
#Fit statistic : Chi-Squared = 80.37 using 59 PHA bins.
# Reduced chi-squared = 1.480 for 55 degrees of freedom
# Reduced chi-squared = 1.462 for 55 degrees of freedom
# Reduced chi-squared = 1.461 for 55 degrees of freedom
# Reduced chi-squared = 1.461 for 55 degrees of freedom
# Null hypothesis probability = 1.187732e-02
# Null hypothesis probability = 1.439515e-02
# Null hypothesis probability = 1.442658e-02
# Null hypothesis probability = 1.446204e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.450e-09 3.718e-09
25- 50 2.161e-08 1.237e-08
50-150 1.069e-07 9.565e-08
15-150 1.350e-07 1.093e-07
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: 1.19336 ( -0.0939645 0.0929928 )
Norm@50keV : 4.10067E-03 ( -0.000203418 0.000203309 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.12 using 59 PHA bins.
# Reduced chi-squared = 0.9144 for 57 degrees of freedom
# Null hypothesis probability = 6.581851e-01
Photon flux (15-150 keV) in 40.86 sec: 0.480890 ( -0.0250126 0.0251026 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.7031e-06 ( -9.27526e-08 9.30762e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.19407 ( -0.0993762 0.0891179 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 4.12080E-03 ( -0.000203709 0.000470585 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.20 using 59 PHA bins.
# Reduced chi-squared = 0.9321 for 56 degrees of freedom
# Null hypothesis probability = 6.195024e-01
Photon flux (15-150 keV) in 40.86 sec: 0.480900 ( -0.012502 0.024879 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.69986e-06 ( -8.90217e-08 9.5404e-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) = 1.00e-06
S(50-100 keV) = 1.72e-06
T90 vs. Hardness ratio plot
T90 = 152.419999957085 sec.
Hardness ratio (energy fluence ratio) = 1.72
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.52944
Count Ratio (50-100 keV) / (15-25 keV) = 1.32298
Mask shadow pattern
IMX = -4.404271815784693E-01, IMY = 1.041262044138435E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
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:
-239.576000 -24.332000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.4263 77.7250 2.3 55.4 6.8 4.9805 4.9 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-24.332000 16.524590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
187.9283 3.6653 0.4 24.4 -166.7 2.6111 31.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
65.524590 962.526900
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
203.4986 -43.6546 3.3 49.3 148.0 10.3398 3.5 ------ UNKNOWN
217.5622 46.4955 3.8 49.9 9.2 4.6064 3.1 ------ UNKNOWN
202.5185 57.5994 2.6 55.1 -7.8 8.7898 4.4 ------ UNKNOWN
Plot creation:
Mon Sep 11 16:38:37 EDT 2017