Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
10.6593 +41.1435 0.0313 23.2 110.0 0.0997 6.1 TRIG_00781740
------------------------------------------
Foreground time interval of the image:
-0.024 0.996 (delta_t = 1.020 [sec])
Background time interval of the image:
-128.459 -0.024 (delta_t = 128.435 [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
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)
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 -0.024 sec. to 0.996 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.19350 ( -0.436969 0.50628 )
Norm@50keV : 4.63833E-03 ( -0.00169476 0.00165232 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.95 using 59 PHA bins.
# Reduced chi-squared = 1.104 for 57 degrees of freedom
# Null hypothesis probability = 2.739396e-01
Photon flux (15-150 keV) in 1.02 sec: 0.765280 ( -0.2094 0.209401 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.44349e-08 ( -1.40244e-08 1.46805e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.024 sec. to 0.996 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.29044 ( 2.48868 3.196 )
Epeak [keV] : 34.1918 ( -6.80157 7.15223 )
Norm@50keV : 13.1253 ( -12.6002 313294 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.49 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 56 degrees of freedom
# Null hypothesis probability = 4.564425e-01
Photon flux (15-150 keV) in 1.02 sec: 0.743817 ( -0.210046 0.208251 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.76219e-08 ( -1.04806e-08 1.13868e-08 ) ergs/cm2
Band function
Time interval is from -0.024 sec. to 0.996 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.51390 ( -5.18378 -4.5139 )
beta : -4.89608 ( 4.89608 2.06645 )
Epeak [keV] : 33.8101 ( -5.39441 5.70462 )
Norm@50keV : 79.9776 ( -20.1731 602.865 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.56 using 59 PHA bins.
# Reduced chi-squared = 1.028 for 55 degrees of freedom
# Null hypothesis probability = 4.165022e-01
Photon flux (15-150 keV) in 1.02 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] : 8.74622 (-1.66207 2.01244)
R^2/D10^2 : 0.693454 (-0.401085 0.895457)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.77 using 59 PHA bins.
# Reduced chi-squared = 0.9959 for 57 degrees of freedom
# Null hypothesis probability = 4.837441e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.037e-08 4.979e-09
25- 50 2.107e-08 9.551e-09
50-150 7.358e-09 4.735e-09
15-150 3.880e-08 1.777e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 42.2059 (-17.5407 42.4701)
Norm : 5.02735 (-1.87075 2.8393)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.51 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.502003e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.198e-08 4.952e-09
25- 50 1.612e-08 6.918e-09
50-150 1.322e-08 9.997e-09
15-150 4.132e-08 1.745e-08
Double BB
#Fit statistic : Chi-Squared = 56.73 using 59 PHA bins.
#Fit statistic : Chi-Squared = 56.29 using 59 PHA bins.
#Fit statistic : Chi-Squared = 56.27 using 59 PHA bins.
# Reduced chi-squared = 1.032 for 55 degrees of freedom
# Reduced chi-squared = 1.032 for 55 degrees of freedom
# Reduced chi-squared = 1.031 for 55 degrees of freedom
# Reduced chi-squared = 1.023 for 55 degrees of freedom
# Reduced chi-squared = 1.023 for 55 degrees of freedom
# Null hypothesis probability = 4.089468e-01
# Null hypothesis probability = 4.096536e-01
# Null hypothesis probability = 4.104672e-01
# Null hypothesis probability = 4.263768e-01
# Null hypothesis probability = 4.272285e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from -0.030 sec. to 0.970 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.11796 ( -0.457281 0.524301 )
Norm@50keV : 4.69612E-03 ( -0.00172517 0.00166454 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.63 using 59 PHA bins.
# Reduced chi-squared = 1.134 for 57 degrees of freedom
# Null hypothesis probability = 2.276755e-01
Photon flux (15-150 keV) in 1 sec: 0.745433 ( -0.21095 0.210984 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.37158e-08 ( -1.41773e-08 1.47845e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.030 sec. to 0.970 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.84855 ( 1.96169 3.35762 )
Epeak [keV] : 34.4628 ( -6.90025 9.70268 )
Norm@50keV : 6.35537 ( -5.88218 215026 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.43 using 59 PHA bins.
# Reduced chi-squared = 1.079 for 56 degrees of freedom
# Null hypothesis probability = 3.187987e-01
Photon flux (15-150 keV) in 1 sec: 0.714728 ( -0.212748 0.21065 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.56825e-08 ( -1.07253e-08 7.0504e-09 ) ergs/cm2
Band function
Time interval is from -0.030 sec. to 0.970 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.88369 ( -5.60635 -4.40437 )
beta : -4.22606 ( 4.25402 1.79967 )
Epeak [keV] : 33.5533 ( -5.83094 7.73277 )
Norm@50keV : 31.9471 ( -31.8824 54.7787 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.16 using 59 PHA bins.
# Reduced chi-squared = 1.094 for 55 degrees of freedom
# Null hypothesis probability = 2.943188e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.80684e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.87732 (-1.82331 2.28258)
R^2/D10^2 : 0.624416 (-0.382507 0.911353)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.53 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.495578e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.511e-09 5.176e-09
25- 50 1.978e-08 1.010e-08
50-150 7.236e-09 5.040e-09
15-150 3.653e-08 2.013e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 46.8988 (-21.1822 61.707)
Norm : 4.55416 (-1.76291 2.74753)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.06 using 59 PHA bins.
# Reduced chi-squared = 1.106 for 57 degrees of freedom
# Null hypothesis probability = 2.707745e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.096e-08 4.711e-09
25- 50 1.538e-08 7.526e-09
50-150 1.404e-08 1.017e-08
15-150 4.038e-08 2.086e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.53 using 59 PHA bins.
#Fit statistic : Chi-Squared = 60.50 using 59 PHA bins.
#Fit statistic : Chi-Squared = 59.28 using 59 PHA bins.
#Fit statistic : Chi-Squared = 59.26 using 59 PHA bins.
# Reduced chi-squared = 1.101 for 55 degrees of freedom
# Reduced chi-squared = 1.100 for 55 degrees of freedom
# Reduced chi-squared = 1.078 for 55 degrees of freedom
# Reduced chi-squared = 1.077 for 55 degrees of freedom
# Null hypothesis probability = 2.829916e-01
# Null hypothesis probability = 2.841177e-01
# Null hypothesis probability = 3.221889e-01
# Null hypothesis probability = 3.230234e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: 2.19350 ( -0.436969 0.50628 )
Norm@50keV : 4.63833E-03 ( -0.00169476 0.00165232 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.95 using 59 PHA bins.
# Reduced chi-squared = 1.104 for 57 degrees of freedom
# Null hypothesis probability = 2.739396e-01
Photon flux (15-150 keV) in 1.02 sec: 0.765280 ( -0.2094 0.209401 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.44349e-08 ( -1.40244e-08 1.46805e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.29044 ( 2.48868 3.196 )
Epeak [keV] : 34.1918 ( -6.80157 7.15223 )
Norm@50keV : 13.1253 ( -12.6002 322774 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.49 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 56 degrees of freedom
# Null hypothesis probability = 4.564425e-01
Photon flux (15-150 keV) in 1.02 sec: 0.743817 ( -0.210046 0.208251 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.76219e-08 ( -1.04806e-08 1.13868e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.51390 ( -5.18378 -4.5139 )
beta : -4.89608 ( 4.89608 2.06645 )
Epeak [keV] : 33.8101 ( -5.39441 5.70462 )
Norm@50keV : 79.9776 ( -20.1731 602.865 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.56 using 59 PHA bins.
# Reduced chi-squared = 1.028 for 55 degrees of freedom
# Null hypothesis probability = 4.165022e-01
Photon flux (15-150 keV) in 1.02 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) = 1.41e-08
S(50-100 keV) = 1.23e-08
T90 vs. Hardness ratio plot
T90 = 0.915999948978424 sec.
Hardness ratio (energy fluence ratio) = 0.87234
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.57262
Count Ratio (50-100 keV) / (15-25 keV) = 0.137245
Mask shadow pattern
IMX = -1.465336033624136E-01, IMY = -4.028140344914817E-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:
-128.459400 -0.024000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.4432 35.3610 10.7 48.7 -154.5 -0.5530 -1.1 12.0 Cyg X-1
308.1705 40.9494 2.6 40.2 -158.3 1.3744 4.4 2.7 Cyg X-3
326.1103 38.3134 13.6 35.0 -179.8 0.2131 0.9 2.9 Cyg X-2
71.6737 34.1051 2.9 49.0 33.3 3.0729 4.0 ------ UNKNOWN
55.4063 49.5897 2.3 29.5 34.2 1.2391 5.0 ------ UNKNOWN
40.9250 61.4277 0.1 15.8 22.4 14.8531 80.5 ------ UNKNOWN
293.9307 28.1812 2.8 57.3 -154.1 5.1423 4.1 ------ UNKNOWN
133.1924 49.5772 2.7 58.9 -24.5 5.6123 4.3 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.024000 0.996000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.6258 35.1993 5.3 48.8 -154.8 0.0698 2.2 1.7 Cyg X-1
308.0718 41.0349 22.1 40.2 -158.1 0.0102 0.5 5.2 Cyg X-3
325.9939 38.3235 7.1 35.1 -179.6 0.0257 1.6 8.4 Cyg X-2
10.6593 41.1435 1.9 23.2 110.0 0.0997 6.1 ------ UNKNOWN
40.9359 61.4332 0.8 15.8 22.4 0.1898 15.0 ------ UNKNOWN
348.8151 61.2334 2.2 8.5 -164.1 0.0637 5.2 ------ UNKNOWN
123.9115 47.7723 2.7 57.9 -17.1 0.2830 4.3 ------ UNKNOWN
129.9796 49.2353 2.3 58.3 -22.1 0.3666 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
58.340650 962.480000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
308.0954 40.8236 11.7 46.1 -126.3 -5.0089 -1.0 7.8 Cyg X-3
326.0138 38.2370 13.6 34.1 -137.6 1.4182 0.8 9.0 Cyg X-2
359.7337 18.2876 2.1 24.7 147.8 6.6385 5.5 ------ UNKNOWN
14.2574 46.7668 3.5 6.2 -33.7 3.1893 3.3 ------ UNKNOWN
40.9167 61.4300 0.1 27.2 -25.8 100.1398 92.7 ------ UNKNOWN
334.7613 41.1463 3.1 26.8 -135.7 4.5614 3.8 ------ UNKNOWN
35.0312 68.0927 3.3 29.9 -39.6 4.4642 3.5 ------ UNKNOWN
Plot creation:
Tue Oct 24 11:18:13 EDT 2017