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
64.4499 -32.9497 0.0105 36.5565 -62.2576 1.6585503 18.220 TRIG_00828672
Foreground time interval of the image:
-0.968 12.077 (delta_t = 13.045 [sec])
Background time interval of the image:
-239.624 -0.968 (delta_t = 238.656 [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 -0.968 sec. to 12.728 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.32213 ( -0.135281 0.133915 )
Norm@50keV : 8.75920E-03 ( -0.000703876 0.000703646 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.14 using 59 PHA bins.
# Reduced chi-squared = 0.8971 for 57 degrees of freedom
# Null hypothesis probability = 6.936629e-01
Photon flux (15-150 keV) in 13.7 sec: 1.04939 ( -0.086968 0.0871 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.1797e-06 ( -1.03454e-07 1.04142e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.968 sec. to 12.728 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.902159 ( -0.558194 0.471789 )
Epeak [keV] : 133.630 ( -50.197 -133.63 )
Norm@50keV : 1.42157E-02 ( -0.00575481 0.0123024 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.05 using 59 PHA bins.
# Reduced chi-squared = 0.8758 for 56 degrees of freedom
# Null hypothesis probability = 7.332783e-01
Photon flux (15-150 keV) in 13.7 sec: 1.03413 ( -0.088927 0.08896 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.14594e-06 ( -1.13079e-07 1.12208e-07 ) ergs/cm2
Band function
Time interval is from -0.968 sec. to 12.728 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -3.58814 -5 )
beta : -1.54153 ( -0.212088 0.175111 )
Epeak [keV] : 30.1091 ( -4.43665 3.92697 )
Norm@50keV : 277.751 ( -21.9626 442.706 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.69 using 59 PHA bins.
# Reduced chi-squared = 0.7216 for 55 degrees of freedom
# Null hypothesis probability = 9.403673e-01
Photon flux (15-150 keV) in 13.7 sec: 1.03324 ( -0.085078 0.09193 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.1797e-06 ( -1.03454e-07 1.04142e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 16.7154 (-1.8119 2.07073)
R^2/D10^2 : 8.50376E-02 (-0.0280226 0.0413332)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 81.61 using 59 PHA bins.
# Reduced chi-squared = 1.432 for 57 degrees of freedom
# Null hypothesis probability = 1.793407e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.659e-08 1.110e-08
25- 50 2.907e-07 3.274e-08
50-150 5.766e-07 8.247e-08
15-150 9.339e-07 9.727e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-25.7995 -200)
Norm : 4.37544 (-0.353365 0.353365)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.85 using 59 PHA bins.
# Reduced chi-squared = 0.9974 for 57 degrees of freedom
# Null hypothesis probability = 4.806838e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.493e-07 1.456e-08
25- 50 2.872e-07 4.747e-08
50-150 6.299e-07 2.135e-07
15-150 1.066e-06 3.922e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.08784 (-1.48755 1.87327)
R1^2/D10^2 : 0.663050 (-0.315334 0.617109)
kT2 [keV] : 32.1073 (-7.32624 16.8513)
R2^2/D10^2 : 7.43230E-03 (-0.00538443 0.010699)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.35 using 59 PHA bins.
# Reduced chi-squared = 0.7701 for 55 degrees of freedom
# Null hypothesis probability = 8.940164e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.240e-07 4.824e-08
25- 50 2.929e-07 8.706e-08
50-150 7.574e-07 3.696e-07
15-150 1.174e-06 4.318e-07
Peak spectrum fit
Power-law model
Time interval is from 1.188 sec. to 2.188 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.862251 ( -0.295037 0.27386 )
Norm@50keV : 1.71797E-02 ( -0.00296953 0.00290462 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.55 using 59 PHA bins.
# Reduced chi-squared = 1.238 for 57 degrees of freedom
# Null hypothesis probability = 1.071426e-01
Photon flux (15-150 keV) in 1 sec: 1.97181 ( -0.33299 0.33575 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.95718e-07 ( -3.2074e-08 3.2164e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.188 sec. to 2.188 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.179694 ( -1.71158 0.893473 )
Epeak [keV] : 167.122 ( -167.113 -167.113 )
Norm@50keV : 3.23462E-02 ( -0.017373 0.0995125 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.65 using 59 PHA bins.
# Reduced chi-squared = 1.244 for 56 degrees of freedom
# Null hypothesis probability = 1.038778e-01
Photon flux (15-150 keV) in 1 sec: 1.91605 ( -0.3531 0.35107 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92101e-07 ( -3.37321e-08 3.32139e-08 ) ergs/cm2
Band function
Time interval is from 1.188 sec. to 2.188 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -0.907234 ( -0.303075 0.308387 )
Epeak [keV] : 26.5912 ( -26.5828 88.8824 )
Norm@50keV : 733.147 ( -116.888 2.98758e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.84 using 59 PHA bins.
# Reduced chi-squared = 1.270 for 55 degrees of freedom
# Null hypothesis probability = 8.584144e-02
Photon flux (15-150 keV) in 1 sec: 1.94705 ( -0.30942 0.31641 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.95713e-07 ( -3.20728e-08 3.2169e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.5517 (-4.61978 6.53106)
R^2/D10^2 : 4.68731E-02 (-0.0233723 0.0405854)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.80 using 59 PHA bins.
# Reduced chi-squared = 1.260 for 57 degrees of freedom
# Null hypothesis probability = 8.963124e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.255e-09 1.746e-09
25- 50 3.014e-08 8.890e-09
50-150 1.454e-07 4.023e-08
15-150 1.808e-07 4.690e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-35.3768 -200)
Norm : 8.16937 (-1.40004 1.40004)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 87.50 using 59 PHA bins.
# Reduced chi-squared = 1.535 for 57 degrees of freedom
# Null hypothesis probability = 5.804524e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.034e-08 1.180e-08
25- 50 3.913e-08 2.199e-08
50-150 8.582e-08 4.807e-08
15-150 1.453e-07 8.320e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.01381 (-2.59974 20.3224)
R1^2/D10^2 : 3.11140 (-3.15056 149.498)
kT2 [keV] : 28.5853 (-6.0274 -28.5482)
R2^2/D10^2 : 3.18612E-02 (-0.0159315 0.020501)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.85 using 59 PHA bins.
# Reduced chi-squared = 1.252 for 55 degrees of freedom
# Null hypothesis probability = 9.920950e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.184e-08 6.847e-09
25- 50 3.038e-08 1.362e-08
50-150 1.491e-07 7.838e-08
15-150 1.913e-07 9.049e-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: 1.27833 ( -0.137414 0.135553 )
Norm@50keV : 8.89370E-03 ( -0.000723777 0.000723761 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.90 using 59 PHA bins.
# Reduced chi-squared = 0.9280 for 57 degrees of freedom
# Null hypothesis probability = 6.296823e-01
Photon flux (15-150 keV) in 13.04 sec: 1.05692 ( -0.0891521 0.0893121 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.15221e-06 ( -1.02051e-07 1.02561e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.845044 ( -0.569453 0.483982 )
Epeak [keV] : 138.315 ( -52.0437 -138.317 )
Norm@50keV : 1.45628E-02 ( -0.0059566 0.0126791 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.75 using 59 PHA bins.
# Reduced chi-squared = 0.9062 for 56 degrees of freedom
# Null hypothesis probability = 6.733024e-01
Photon flux (15-150 keV) in 13.04 sec: 1.04114 ( -0.091106 0.09117 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.12064e-06 ( -1.10963e-07 1.10028e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -3.72254 -5 )
beta : -1.49053 ( -0.214889 0.17623 )
Epeak [keV] : 30.4652 ( -4.68226 4.27587 )
Norm@50keV : 254.407 ( -20.4037 431.722 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.01 using 59 PHA bins.
# Reduced chi-squared = 0.7638 for 55 degrees of freedom
# Null hypothesis probability = 9.010465e-01
Photon flux (15-150 keV) in 13.04 sec: 1.13222 ( -0.177883 0.00171 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.56205e-08 ( -2.56205e-08 -1.23292e-08 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 2.66e-07
S(50-100 keV) = 4.25e-07
T90 vs. Hardness ratio plot
T90 = 11.9039998054504 sec.
Hardness ratio (energy fluence ratio) = 1.59774
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.80227
Count Ratio (50-100 keV) / (15-25 keV) = 1.56932
Mask shadow pattern
IMX = 3.451610372057506E-01, IMY = 6.562538626281503E-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:
-239.624000 -0.968000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5664 -40.5479 2.7 41.0 34.6 1.8459 4.2 1.8 Vela X-1
170.2017 -60.6574 22.9 36.3 81.6 0.2996 0.5 3.9 Cen X-3
187.0299 -62.6959 0.0 39.3 94.2 -0.5162 -0.6 11.2 GX 301-2
204.8038 -65.4031 3.1 40.8 106.7 3.4277 3.7 ------ UNKNOWN
139.3068 -59.5199 2.6 26.8 58.3 1.3560 4.5 ------ UNKNOWN
298.1502 -52.9127 1.8 55.0 165.6 8.2332 6.2 ------ UNKNOWN
326.0610 -53.6358 2.6 48.1 -175.0 2.2873 4.5 ------ UNKNOWN
95.8609 -10.6963 2.8 59.1 -22.3 6.3210 4.1 ------ UNKNOWN
53.2143 -31.2398 2.8 40.1 -76.8 3.6145 4.1 ------ UNKNOWN
9.3028 -37.3346 3.1 48.0 -129.1 4.2574 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.968000 12.076600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.7192 -40.6092 7.8 41.0 34.8 0.1209 1.5 9.3 Vela X-1
170.4131 -60.4604 15.7 36.5 81.6 0.0726 0.7 10.2 Cen X-3
186.9747 -62.7018 1652.1 39.3 94.1 -0.0010 -0.0 9.7 GX 301-2
119.0702 -23.1550 3.4 51.7 7.4 0.3868 3.4 ------ UNKNOWN
353.4339 -69.9960 2.6 27.6 -175.2 0.1880 4.4 ------ UNKNOWN
329.9481 -53.8928 2.2 46.8 -172.4 0.4521 5.2 ------ UNKNOWN
40.2812 -43.8985 2.3 31.5 -100.7 0.3905 5.1 ------ UNKNOWN
64.4499 -32.9497 0.6 36.6 -62.3 1.6585 18.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
67.476600 962.402600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
109.8666 -62.1725 4.3 40.9 98.3 6.4023 2.7 ------ UNKNOWN
102.2820 4.8466 2.5 52.1 -0.5 5.4972 4.7 ------ UNKNOWN
21.2631 -47.1628 3.5 35.4 -177.8 2.4810 3.3 ------ UNKNOWN
61.2442 -8.5390 2.6 24.6 -59.0 2.9525 4.4 ------ UNKNOWN
358.8702 -30.8575 3.1 54.8 -158.1 8.5871 3.7 ------ UNKNOWN
48.1339 3.9865 4.4 40.1 -77.1 5.9707 2.6 ------ UNKNOWN
16.1393 -13.4863 3.3 48.0 -129.1 10.0319 3.5 ------ UNKNOWN
Plot creation:
Sun May 13 07:44:47 EDT 2018