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
335.7330 +67.8608 0.0367 12.9 -106.2 0.1008 5.2 TRIG_00783893
------------------------------------------
Foreground time interval of the image:
0.000 2.048 (delta_t = 2.048 [sec])
Background time interval of the image:
-239.544 -12.544 (delta_t = 227.000 [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 0.000 sec. to 2.048 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.28925 ( -0.525192 0.604783 )
Norm@50keV : 2.09726E-03 ( -0.000950421 0.000972512 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.75 using 59 PHA bins.
# Reduced chi-squared = 1.153 for 57 degrees of freedom
# Null hypothesis probability = 1.997995e-01
Photon flux (15-150 keV) in 2.048 sec: 0.364272 ( -0.122026 0.122398 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.08312e-08 ( -1.57193e-08 1.70822e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 2.048 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -7.20489 ( 7.20254 5.69319 )
Epeak [keV] : 27.8303 ( -3.89532 5.05906 )
Norm@50keV : 1.13911E+04 ( -11280.7 1.78351e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.56 using 59 PHA bins.
# Reduced chi-squared = 0.9744 for 56 degrees of freedom
# Null hypothesis probability = 5.293706e-01
Photon flux (15-150 keV) in 2.048 sec: 0.387997 ( -0.111615 0.113422 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.36224e-08 ( -1.01849e-08 1.09933e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 2.048 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.97909 ( -3.70186 -4.97909 )
beta : -9.37163 ( 9.37163 6.4463 )
Epeak [keV] : 28.3186 ( -4.40517 4.91982 )
Norm@50keV : 274.315 ( -76.2962 792.413 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.87 using 59 PHA bins.
# Reduced chi-squared = 0.9976 for 55 degrees of freedom
# Null hypothesis probability = 4.795503e-01
Photon flux (15-150 keV) in 2.048 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] : 7.21311 (-1.44926 1.81294)
R^2/D10^2 : 0.750251 (-0.463604 1.11973)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.15 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 57 degrees of freedom
# Null hypothesis probability = 4.695421e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.323e-08 7.978e-09
25- 50 1.920e-08 1.111e-08
50-150 3.541e-09 2.897e-09
15-150 3.597e-08 2.176e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 31.6593 (-13.3489 34.3742)
Norm : 2.98777 (-1.34659 2.25817)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.70 using 59 PHA bins.
# Reduced chi-squared = 1.100 for 57 degrees of freedom
# Null hypothesis probability = 2.813174e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.279e-08 6.978e-09
25- 50 1.504e-08 9.123e-09
50-150 8.831e-09 7.573e-09
15-150 3.666e-08 2.064e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 200.000 (-200 -200)
R1^2/D10^2 : 1.20685E-05 (-1.20259e-05 -1.20259e-05)
kT2 [keV] : 7.12392 (-1.47389 1.78896)
R2^2/D10^2 : 0.776909 (-0.479139 1.2187)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.15 using 59 PHA bins.
#Fit statistic : Chi-Squared = 56.85 using 59 PHA bins.
# Reduced chi-squared = 1.039 for 55 degrees of freedom
# Reduced chi-squared = 1.034 for 55 degrees of freedom
# Null hypothesis probability = 3.952314e-01
# Null hypothesis probability = 4.060568e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.324e-08 6.484e-01
25- 50 1.919e-08 5.694e+00
50-150 3.535e-09 1.560e+02
15-150 3.597e-08 1.470e+02
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 2.048 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.28925 ( -0.525192 0.604783 )
Norm@50keV : 2.09726E-03 ( -0.000950421 0.000972512 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.75 using 59 PHA bins.
# Reduced chi-squared = 1.153 for 57 degrees of freedom
# Null hypothesis probability = 1.997995e-01
Photon flux (15-150 keV) in 2.048 sec: 0.364272 ( -0.122026 0.122398 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.08312e-08 ( -1.57193e-08 1.70822e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 2.048 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -7.20489 ( 7.20254 5.69319 )
Epeak [keV] : 27.8303 ( -3.89532 5.05906 )
Norm@50keV : 1.13911E+04 ( -11280.7 1.78299e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.56 using 59 PHA bins.
# Reduced chi-squared = 0.9744 for 56 degrees of freedom
# Null hypothesis probability = 5.293706e-01
Photon flux (15-150 keV) in 2.048 sec: 0.387997 ( -0.111615 0.113422 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.36224e-08 ( -1.01849e-08 1.09933e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 2.048 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.97909 ( -3.70553 -4.97909 )
beta : -9.37163 ( 9.37163 6.4463 )
Epeak [keV] : 28.3186 ( -4.40517 4.91982 )
Norm@50keV : 274.315 ( -76.2962 792.413 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.87 using 59 PHA bins.
# Reduced chi-squared = 0.9976 for 55 degrees of freedom
# Null hypothesis probability = 4.795503e-01
Photon flux (15-150 keV) in 2.048 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] : 7.21311 (-1.44926 1.81294)
R^2/D10^2 : 0.750251 (-0.463604 1.11973)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.15 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 57 degrees of freedom
# Null hypothesis probability = 4.695421e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.323e-08 8.064e-09
25- 50 1.920e-08 1.204e-08
50-150 3.541e-09 3.088e-09
15-150 3.597e-08 2.208e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 31.6593 (-13.3489 34.3742)
Norm : 2.98777 (-1.34659 2.25817)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.70 using 59 PHA bins.
# Reduced chi-squared = 1.100 for 57 degrees of freedom
# Null hypothesis probability = 2.813174e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.279e-08 6.920e-09
25- 50 1.504e-08 9.296e-09
50-150 8.831e-09 7.671e-09
15-150 3.666e-08 2.254e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 200.000 (-200 -200)
R1^2/D10^2 : 1.20685E-05 (-1.20259e-05 -1.20259e-05)
kT2 [keV] : 7.12392 (-1.47389 1.78896)
R2^2/D10^2 : 0.776909 (-0.479139 1.2187)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.15 using 59 PHA bins.
#Fit statistic : Chi-Squared = 56.85 using 59 PHA bins.
# Reduced chi-squared = 1.039 for 55 degrees of freedom
# Reduced chi-squared = 1.034 for 55 degrees of freedom
# Null hypothesis probability = 3.952314e-01
# Null hypothesis probability = 4.060568e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.324e-08 6.969e-01
25- 50 1.919e-08 5.760e+00
50-150 3.535e-09 1.513e+02
15-150 3.597e-08 1.467e+02
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: 2.28925 ( -0.525192 0.604783 )
Norm@50keV : 2.09726E-03 ( -0.000950421 0.000972512 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.75 using 59 PHA bins.
# Reduced chi-squared = 1.153 for 57 degrees of freedom
# Null hypothesis probability = 1.997995e-01
Photon flux (15-150 keV) in 2.048 sec: 0.364272 ( -0.122026 0.122398 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.08312e-08 ( -1.57193e-08 1.70822e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -7.20489 ( 7.20254 5.69319 )
Epeak [keV] : 27.8303 ( -3.89532 5.05906 )
Norm@50keV : 1.13911E+04 ( -11280.7 1.78396e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.56 using 59 PHA bins.
# Reduced chi-squared = 0.9744 for 56 degrees of freedom
# Null hypothesis probability = 5.293706e-01
Photon flux (15-150 keV) in 2.048 sec: 0.387997 ( -0.111615 0.113422 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.36224e-08 ( -1.01849e-08 1.09933e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.97909 ( -3.69864 -4.97909 )
beta : -9.37163 ( 9.37163 6.4463 )
Epeak [keV] : 28.3186 ( -4.40517 4.91982 )
Norm@50keV : 274.315 ( -76.2962 792.413 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.87 using 59 PHA bins.
# Reduced chi-squared = 0.9976 for 55 degrees of freedom
# Null hypothesis probability = 4.795503e-01
Photon flux (15-150 keV) in 2.048 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) = 1.32e-08
S(50-100 keV) = 1.07e-08
T90 vs. Hardness ratio plot
T90 = 2.04799997806549 sec.
Hardness ratio (energy fluence ratio) = 0.810606
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.01417
Count Ratio (50-100 keV) / (15-25 keV) = 0.032686
Mask shadow pattern
IMX = -6.374999224459438E-02, IMY = 2.197747857021851E-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:
-239.544000 -12.544000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.5901 35.2018 9.3 48.7 -139.7 1.7892 1.2 0.0 Cyg X-1
308.0738 40.9309 3.6 40.3 -143.1 2.3809 3.2 2.1 Cyg X-3
326.1621 38.4790 5.4 34.8 -164.6 -1.0072 -2.1 9.5 Cyg X-2
3.9246 30.8743 2.6 33.2 137.0 2.6202 4.4 ------ UNKNOWN
349.3776 36.1857 2.3 29.7 161.6 2.3566 5.0 ------ UNKNOWN
40.9208 61.4299 0.1 15.8 36.8 35.9643 96.8 ------ UNKNOWN
125.4285 48.1155 2.5 58.2 -3.5 11.4328 4.6 ------ UNKNOWN
128.4497 49.0495 2.3 58.2 -6.1 12.4924 5.1 ------ UNKNOWN
322.4797 30.9566 2.4 42.9 -165.9 2.9742 4.9 ------ UNKNOWN
285.9039 49.3743 3.2 43.1 -116.7 6.6124 3.5 ------ UNKNOWN
214.6318 70.0256 3.3 44.5 -60.2 6.4246 3.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 2.048000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.7319 35.2432 8.4 48.6 -139.8 -0.0879 -1.4 7.4 Cyg X-1
308.2916 40.9105 15.3 40.2 -143.3 -0.0244 -0.8 8.6 Cyg X-3
326.3512 38.3883 7.0 34.8 -164.9 0.0394 1.6 9.3 Cyg X-2
40.9291 61.4209 0.6 15.9 36.8 0.3499 18.2 ------ UNKNOWN
329.1733 57.4191 2.0 19.0 -139.8 0.1069 5.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
60.356600 262.386000
263.456000 694.386000
695.456000 772.056600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.6991 35.1916 3.1 38.5 -154.5 6.3658 3.8 5.4 Cyg X-1
308.2199 40.9376 3.1 30.8 -162.0 4.9332 3.7 5.1 Cyg X-3
326.1304 38.3122 16.7 30.0 170.1 -0.8768 -0.7 2.0 Cyg X-2
15.8737 33.8505 2.3 40.9 100.2 21.1421 4.9 ------ UNKNOWN
40.9259 61.4316 0.2 27.2 46.4 107.7509 76.6 ------ UNKNOWN
225.2802 79.9839 3.5 27.2 -46.0 4.6189 3.3 ------ UNKNOWN
295.4669 17.5795 3.4 56.4 -157.3 25.7841 3.4 ------ UNKNOWN
292.5854 17.6144 4.8 57.2 -154.2 21.7570 2.4 ------ UNKNOWN
268.9390 42.0497 3.5 43.1 -116.6 16.4740 3.3 ------ UNKNOWN
Plot creation:
Mon Oct 30 17:12:57 EDT 2017