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
299.6952 +35.2379 0.0090 24.1 -90.5 6.8852 21.5 TRIG_00892030
------------------------------------------
Foreground time interval of the image:
0.000 235.240 (delta_t = 235.240 [sec])
236.000 243.080 (delta_t = 7.080 [sec])
Background time interval of the image:
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
Multiple GTIs in the spectrum
tstart tstop
0.000000 235.240000
236.000000 243.080000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.84624 ( -0.14752 0.152574 )
Norm@50keV : 1.23265E-03 ( -0.00012491 0.00012335 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.60 using 59 PHA bins.
# Reduced chi-squared = 1.203 for 57 degrees of freedom
# Null hypothesis probability = 1.397357e-01
Photon flux (15-150 keV) in 242.3 sec: 0.172999 ( -0.0150972 0.0151007 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.7462e-06 ( -2.77354e-07 2.81674e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 235.240000
236.000000 243.080000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.242596 ( -1.06373 0.841161 )
Epeak [keV] : 45.7030 ( -5.78304 9.61078 )
Norm@50keV : 1.02247E-02 ( -0.0102314 0.03238 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.85 using 59 PHA bins.
# Reduced chi-squared = 0.9973 for 56 degrees of freedom
# Null hypothesis probability = 4.806384e-01
Photon flux (15-150 keV) in 242.3 sec: 0.163566 ( -0.015728 0.015756 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.37901e-06 ( -2.92803e-07 3.17357e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 235.240000
236.000000 243.080000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.490303 ( -1.2324 2.62773 )
beta : -2.77524 ( 2.78115 0.613559 )
Epeak [keV] : 41.1442 ( -8.7792 9.12612 )
Norm@50keV : 2.99954E-02 ( -0.0270094 1.73551 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.11 using 59 PHA bins.
# Reduced chi-squared = 0.9838 for 55 degrees of freedom
# Null hypothesis probability = 5.086353e-01
Photon flux (15-150 keV) in 242.3 sec: 0.164270 ( 6.83573 -0.015622 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.46773e-06 ( -2.46603e-06 -3.01041e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.7891 (-0.919794 1.024)
R^2/D10^2 : 6.38424E-02 (-0.0186671 0.0257574)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.77 using 59 PHA bins.
# Reduced chi-squared = 1.101 for 57 degrees of freedom
# Null hypothesis probability = 2.793650e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.747e-07 5.876e-08
25- 50 1.033e-06 9.910e-08
50-150 6.692e-07 1.398e-07
15-150 2.077e-06 2.313e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 81.8882 (-19.6764 31.2833)
Norm : 0.816654 (-0.0988355 0.115397)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.33 using 59 PHA bins.
# Reduced chi-squared = 1.058 for 57 degrees of freedom
# Null hypothesis probability = 3.564623e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.142e-07 6.409e-08
25- 50 8.512e-07 7.596e-08
50-150 1.220e-06 4.865e-07
15-150 2.586e-06 4.460e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.88730 (-2.8028 1.62114)
R1^2/D10^2 : 0.108813 (-0.0430062 0.0482827)
kT2 [keV] : 27.8396 (-21.9072 -28.006)
R2^2/D10^2 : 7.60830E-04 (-0.000725528 0.00307722)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.20 using 59 PHA bins.
# Reduced chi-squared = 0.9855 for 55 degrees of freedom
# Null hypothesis probability = 5.051499e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.261e-07 1.253e-07
25- 50 9.789e-07 3.425e-07
50-150 1.092e-06 5.576e-07
15-150 2.497e-06 9.119e-07
Peak spectrum fit
Power-law model
Time interval is from 236.000 sec. to 243.080 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.84624 ( -0.14752 0.152574 )
Norm@50keV : 1.23265E-03 ( -0.00012491 0.00012335 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.60 using 59 PHA bins.
# Reduced chi-squared = 1.203 for 57 degrees of freedom
# Null hypothesis probability = 1.397357e-01
Photon flux (15-150 keV) in 242.3 sec: 0.172999 ( -0.0150972 0.0151007 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.7462e-06 ( -2.77354e-07 2.81674e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 236.000 sec. to 243.080 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.242596 ( -1.06373 0.841161 )
Epeak [keV] : 45.7030 ( -5.78304 9.61078 )
Norm@50keV : 1.02247E-02 ( -0.0102314 0.03238 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.85 using 59 PHA bins.
# Reduced chi-squared = 0.9973 for 56 degrees of freedom
# Null hypothesis probability = 4.806384e-01
Photon flux (15-150 keV) in 242.3 sec: 0.163566 ( -0.015728 0.015756 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.37901e-06 ( -2.92803e-07 3.17357e-07 ) ergs/cm2
Band function
Time interval is from 236.000 sec. to 243.080 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.490303 ( -1.2324 2.62773 )
beta : -2.77524 ( 2.78115 0.613559 )
Epeak [keV] : 41.1442 ( -8.7792 9.12612 )
Norm@50keV : 2.99954E-02 ( -0.0270094 1.73551 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.11 using 59 PHA bins.
# Reduced chi-squared = 0.9838 for 55 degrees of freedom
# Null hypothesis probability = 5.086353e-01
Photon flux (15-150 keV) in 242.3 sec: 0.164270 ( 6.83573 -0.015622 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.46773e-06 ( -2.46603e-06 -3.01041e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.7891 (-0.919794 1.024)
R^2/D10^2 : 6.38424E-02 (-0.0186671 0.0257574)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.77 using 59 PHA bins.
# Reduced chi-squared = 1.101 for 57 degrees of freedom
# Null hypothesis probability = 2.793650e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.747e-07 5.585e-08
25- 50 1.033e-06 1.055e-07
50-150 6.692e-07 1.485e-07
15-150 2.077e-06 2.268e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 81.8882 (-19.6764 31.2833)
Norm : 0.816654 (-0.0988355 0.115397)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.33 using 59 PHA bins.
# Reduced chi-squared = 1.058 for 57 degrees of freedom
# Null hypothesis probability = 3.564623e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.142e-07 6.397e-08
25- 50 8.512e-07 8.323e-08
50-150 1.220e-06 4.732e-07
15-150 2.586e-06 4.707e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.88730 (-2.8028 1.62114)
R1^2/D10^2 : 0.108813 (-0.0430062 0.0482827)
kT2 [keV] : 27.8396 (-21.9072 -28.006)
R2^2/D10^2 : 7.60830E-04 (-0.000725528 0.00307928)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.20 using 59 PHA bins.
# Reduced chi-squared = 0.9855 for 55 degrees of freedom
# Null hypothesis probability = 5.051499e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.261e-07 1.215e-07
25- 50 9.789e-07 3.444e-07
50-150 1.092e-06 5.807e-07
15-150 2.497e-06 9.203e-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: 1.84624 ( -0.14752 0.152574 )
Norm@50keV : 1.23265E-03 ( -0.00012491 0.00012335 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.60 using 59 PHA bins.
# Reduced chi-squared = 1.203 for 57 degrees of freedom
# Null hypothesis probability = 1.397357e-01
Photon flux (15-150 keV) in 242.3 sec: 0.172999 ( -0.0150972 0.0151007 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.7462e-06 ( -2.77354e-07 2.81674e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.242596 ( -1.06373 0.841161 )
Epeak [keV] : 45.7030 ( -5.78304 9.61078 )
Norm@50keV : 1.02247E-02 ( -0.0102314 0.03238 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.85 using 59 PHA bins.
# Reduced chi-squared = 0.9973 for 56 degrees of freedom
# Null hypothesis probability = 4.806384e-01
Photon flux (15-150 keV) in 242.3 sec: 0.163566 ( -0.015728 0.015756 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.37901e-06 ( -2.92803e-07 3.17357e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.490303 ( -1.2324 2.62773 )
beta : -2.77524 ( 2.78115 0.613559 )
Epeak [keV] : 41.1442 ( -8.7792 9.12612 )
Norm@50keV : 2.99954E-02 ( -0.0270094 1.73551 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.11 using 59 PHA bins.
# Reduced chi-squared = 0.9838 for 55 degrees of freedom
# Null hypothesis probability = 5.086353e-01
Photon flux (15-150 keV) in 242.3 sec: 0.164270 ( 6.83573 -0.015622 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.46773e-06 ( -2.46603e-06 -3.01041e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 7.86e-07
S(50-100 keV) = 8.75e-07
T90 vs. Hardness ratio plot
T90 = 320 sec.
Hardness ratio (energy fluence ratio) = 1.11323
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.42366
Count Ratio (50-100 keV) / (15-25 keV) = 0.667028
Mask shadow pattern
IMX = -3.664372987685585E-03, IMY = 4.463843787686371E-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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 235.240000
236.000000 243.080000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.6062 35.1893 7.7 15.0 47.2 0.4576 1.5 11.7 Her X-1
268.3283 -1.3611 6.4 45.5 -9.0 0.8651 1.8 6.0 SW J1753.5-0127
274.0113 -14.0386 43.1 58.2 -16.0 -0.3521 -0.3 0.3 GX 17+2
288.8881 10.9973 3.2 36.7 -43.3 1.6484 3.6 6.1 GRS 1915+105
299.6952 35.2379 0.5 24.1 -90.5 6.8857 21.6 5.6 Cyg X-1
307.9959 40.8493 13.6 27.7 -108.5 0.3135 0.8 8.1 Cyg X-3
326.2119 38.3343 6.7 41.6 -114.0 1.6209 1.7 2.0 Cyg X-2
268.7501 26.7006 2.9 17.4 -7.0 1.0104 3.9 ------ UNKNOWN
264.9341 2.0758 2.5 42.3 -3.8 2.0406 4.6 ------ UNKNOWN
33.1264 71.9818 3.5 57.2 -173.9 5.0682 3.3 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
-119.000000 -108.660000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.6575 -40.6736 5.7 13.3 -76.3 0.0891 2.0 9.2 Vela X-1
169.9605 -60.7505 0.0 33.5 -136.3 -0.1244 -2.0 12.9 Cen X-3
186.7889 -62.7358 43.4 40.7 -142.7 -0.0210 -0.3 4.2 GX 301-2
197.6416 -11.7345 2.1 50.6 143.4 1.2853 5.4 ------ UNKNOWN
210.2846 -25.4801 2.0 55.5 165.4 1.3698 5.7 ------ UNKNOWN
101.3054 -12.2679 2.0 45.8 -12.3 0.4374 5.7 ------ UNKNOWN
130.4795 -51.6505 1.6 24.0 -90.5 0.3973 7.1 ------ UNKNOWN
206.1679 -69.9348 2.2 50.8 -138.3 0.9985 5.3 ------ UNKNOWN
Plot creation:
Fri Mar 8 09:17:26 EST 2019