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
41.2196 +61.6862 0.0292 0.1 -41.0 -14.3202 -6.6 TRIG_00784159
------------------------------------------
Foreground time interval of the image:
-116.596 166.848 (delta_t = 283.444 [sec])
167.968 182.140 (delta_t = 14.172 [sec])
Background time interval of the image:
-119.032 -116.596 (delta_t = 2.436 [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
Multiple GTIs in the spectrum
tstart tstop
-116.596000 166.848000
167.968000 182.140000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.25799 ( )
Norm@50keV : 5.13951E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 261.21 using 59 PHA bins.
# Reduced chi-squared = 4.5827 for 57 degrees of freedom
# Null hypothesis probability = 6.462195e-28
Photon flux (15-150 keV) in 297.6 sec: 1.71560 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.09217e-05 ( 0 0 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-116.596000 166.848000
167.968000 182.140000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.47582E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 2084.81 using 59 PHA bins.
# Reduced chi-squared = 37.2287 for 56 degrees of freedom
# Null hypothesis probability = 0.000000e+00
Photon flux (15-150 keV) in 297.6 sec: 1.40694 ( -0.05592 0.05684 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.78055e-05 ( -5.48834e-07 5.55113e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-116.596000 166.848000
167.968000 182.140000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.15645 ( -0.272636 0.492887 )
beta : -4.88266 ( 9.37167 19.3692 )
Epeak [keV] : 16.1430 ( -4.05004 3.14639 )
Norm@50keV : 7.82499E-02 ( -0.0279219 0.0462205 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.32 using 59 PHA bins.
# Reduced chi-squared = 0.8967 for 55 degrees of freedom
# Null hypothesis probability = 6.906091e-01
Photon flux (15-150 keV) in 297.6 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] : 7.66205 ( )
R^2/D10^2 : 1.57880 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 246.54 using 59 PHA bins.
# Reduced chi-squared = 4.3252 for 57 degrees of freedom
# Null hypothesis probability = 2.057823e-25
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.821e-06 1.741e-07
25- 50 7.818e-06 1.577e-07
50-150 1.777e-06 7.931e-08
15-150 1.442e-05 3.080e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 21.9906 (-0.667103 0.696678)
Norm : 15.9081 (-0.856477 0.904319)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.40 using 59 PHA bins.
# Reduced chi-squared = 0.8842 for 57 degrees of freedom
# Null hypothesis probability = 7.192085e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.923e-06 2.887e-07
25- 50 7.445e-06 1.414e-07
50-150 2.603e-06 1.190e-07
15-150 1.797e-05 3.735e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.77453 (-0.442194 0.461053)
R1^2/D10^2 : 9.62790 (-3.00209 5.05919)
kT2 [keV] : 10.3842 (-0.671125 0.894853)
R2^2/D10^2 : 0.238053 (-0.0969893 0.124733)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.27 using 59 PHA bins.
# Reduced chi-squared = 0.9140 for 55 degrees of freedom
# Null hypothesis probability = 6.555341e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.347e-06 6.934e-07
25- 50 7.483e-06 5.044e-07
50-150 2.507e-06 2.623e-07
15-150 1.734e-05 1.104e-06
Peak spectrum fit
Power-law model
Time interval is from 50.724 sec. to 51.724 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.54617 ( -0.126136 0.131575 )
Norm@50keV : 1.64494E-02 ( -0.00154867 0.00153554 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.56 using 59 PHA bins.
# Reduced chi-squared = 1.045 for 57 degrees of freedom
# Null hypothesis probability = 3.827150e-01
Photon flux (15-150 keV) in 1 sec: 3.32503 ( -0.217957 0.218153 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.66615e-07 ( -1.18698e-08 1.19718e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 50.724 sec. to 51.724 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.09589 ( -0.821726 0.698633 )
Epeak [keV] : 22.7224 ( -12.9033 5.48159 )
Norm@50keV : 0.131264 ( -0.0827896 0.304102 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.78 using 59 PHA bins.
# Reduced chi-squared = 0.7996 for 56 degrees of freedom
# Null hypothesis probability = 8.591939e-01
Photon flux (15-150 keV) in 1 sec: 3.18388 ( -0.22534 0.22626 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.50409e-07 ( -1.2185e-08 1.2919e-08 ) ergs/cm2
Band function
Time interval is from 50.724 sec. to 51.724 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.720228 ( -1.2709 4.1305 )
beta : -3.38802 ( 3.23252 0.452457 )
Epeak [keV] : 24.1516 ( -11.0192 3.78042 )
Norm@50keV : 0.240118 ( -0.394131 440.898 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.84 using 59 PHA bins.
# Reduced chi-squared = 0.7970 for 55 degrees of freedom
# Null hypothesis probability = 8.603113e-01
Photon flux (15-150 keV) in 1 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] : 7.64421 (-0.502841 0.532882)
R^2/D10^2 : 4.29451 (-1.07755 1.45052)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.04 using 59 PHA bins.
# Reduced chi-squared = 1.176 for 57 degrees of freedom
# Null hypothesis probability = 1.706050e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.378e-08 4.370e-09
25- 50 7.069e-08 5.265e-09
50-150 1.594e-08 3.585e-09
15-150 1.304e-07 9.600e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 31.7081 (-4.10524 4.90053)
Norm : 25.4407 (-3.31327 3.87804)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.02 using 59 PHA bins.
# Reduced chi-squared = 0.7899 for 57 degrees of freedom
# Null hypothesis probability = 8.745276e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.321e-08 4.435e-09
25- 50 6.264e-08 4.245e-09
50-150 3.684e-08 7.640e-09
15-150 1.527e-07 1.130e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.24539 (-1.31396 1.23938)
R1^2/D10^2 : 14.5372 (-7.26512 25.3499)
kT2 [keV] : 12.9092 (-3.08487 7.7039)
R2^2/D10^2 : 0.262188 (-0.2327 0.847038)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.35 using 59 PHA bins.
# Reduced chi-squared = 0.8063 for 55 degrees of freedom
# Null hypothesis probability = 8.473343e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.193e-08 1.348e-08
25- 50 6.298e-08 2.032e-08
50-150 3.483e-08 1.883e-08
15-150 1.497e-07 4.671e-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: 3.25799 ( )
Norm@50keV : 5.13951E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 261.21 using 59 PHA bins.
# Reduced chi-squared = 4.5827 for 57 degrees of freedom
# Null hypothesis probability = 6.462195e-28
Photon flux (15-150 keV) in 297.6 sec: 1.71560 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.09217e-05 ( 0 0 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.47582E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 2084.81 using 59 PHA bins.
# Reduced chi-squared = 37.2287 for 56 degrees of freedom
# Null hypothesis probability = 0.000000e+00
Photon flux (15-150 keV) in 297.6 sec: 1.40694 ( -0.05592 0.05684 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.78055e-05 ( -5.48834e-07 5.55113e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.15645 ( -0.272636 0.492887 )
beta : -4.88266 ( 9.37167 19.3692 )
Epeak [keV] : 16.1430 ( -4.05004 3.14639 )
Norm@50keV : 7.82499E-02 ( -0.0279219 0.0462205 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.32 using 59 PHA bins.
# Reduced chi-squared = 0.8967 for 55 degrees of freedom
# Null hypothesis probability = 6.906091e-01
Photon flux (15-150 keV) in 297.6 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) = 6.78e-06
S(50-100 keV) = 2.83e-06
T90 vs. Hardness ratio plot
T90 = 274.499999940395 sec.
Hardness ratio (energy fluence ratio) = 0.417404
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.718502
Count Ratio (50-100 keV) / (15-25 keV) = 0.130262
Mask shadow pattern
IMX = 1.200179702207422E-03, IMY = 1.044026610565082E-03
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:
-119.032000 -116.596000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.7144 22.0978 10.1 49.1 25.1 -0.0760 -1.1 6.7 Crab
308.0528 40.9444 7.9 56.1 -164.0 -0.1399 -1.5 2.6 Cyg X-3
326.1133 38.4216 8.1 49.9 -180.0 -0.0761 -1.4 6.6 Cyg X-2
346.1976 41.7510 1.9 37.8 165.5 0.1866 6.2 ------ UNKNOWN
41.0392 61.6535 0.4 0.0 -127.0 0.4878 27.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-116.596000 166.848000
167.968000 182.140000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.7135 22.0982 7.0 49.1 25.1 13.1152 1.6 6.7 Crab
308.0505 40.9322 10.3 56.1 -164.1 12.6054 1.1 3.0 Cyg X-3
326.1090 38.4170 10.2 50.0 -180.0 7.2191 1.1 6.4 Cyg X-2
348.4441 24.9780 2.7 50.7 149.8 46.7629 4.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
-119.032000 166.848000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.7331 22.0881 15.7 49.1 25.1 1.2201 0.7 7.1 Crab
308.0356 40.9717 4.5 56.1 -164.0 -5.5397 -2.6 3.6 Cyg X-3
326.2419 38.2347 6.0 50.0 179.8 2.3776 1.9 6.2 Cyg X-2
349.5392 25.4801 2.7 49.8 149.0 9.1143 4.3 ------ UNKNOWN
41.9456 51.3007 2.5 10.3 78.2 2.0733 4.6 ------ UNKNOWN
333.1145 43.3126 2.3 42.8 178.5 4.0164 5.0 ------ UNKNOWN
40.9923 61.6458 0.1 0.0 -173.9 45.9165 102.9 ------ UNKNOWN
302.5665 42.2553 2.3 57.3 -159.1 14.5426 5.0 ------ UNKNOWN
285.1287 86.5205 2.7 30.0 -105.0 3.1862 4.2 ------ UNKNOWN
300.2835 60.6525 3.3 43.7 -142.9 3.5121 3.5 ------ UNKNOWN
Plot creation:
Mon Oct 30 16:50:52 EDT 2017