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
22.6030 55.7366 0.0057 49.3341 13.2805 20.6319892 33.705 TRIG_00887512
Foreground time interval of the image:
-56.472 37.517 (delta_t = 93.989 [sec])
Background time interval of the image:
-239.784 -56.472 (delta_t = 183.312 [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 4.096000
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 4.096000
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 4.096000
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 -56.472 sec. to 229.960 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.12509 ( -0.0612853 0.0606083 )
Norm@50keV : 5.26232E-03 ( -0.000181201 0.000180484 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.15 using 59 PHA bins.
# Reduced chi-squared = 1.073 for 57 degrees of freedom
# Null hypothesis probability = 3.292939e-01
Photon flux (15-150 keV) in 286.4 sec: 0.611964 ( -0.022606 0.022756 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.56352e-05 ( -5.19661e-07 5.20048e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -56.472 sec. to 229.960 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.12377 ( -0.0676704 0.0580065 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 5.28440E-03 ( -0.000172562 0.000646778 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.26 using 59 PHA bins.
# Reduced chi-squared = 1.094 for 56 degrees of freedom
# Null hypothesis probability = 2.929506e-01
Photon flux (15-150 keV) in 286.4 sec: 0.616790 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.56868e-05 ( -5.74026e-07 4.65864e-07 ) ergs/cm2
Band function
Time interval is from -56.472 sec. to 229.960 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 23.3184 ( )
R^2/D10^2 : 1.71788E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 273.25 using 59 PHA bins.
# Reduced chi-squared = 4.7939 for 57 degrees of freedom
# Null hypothesis probability = 5.360520e-30
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.816e-07 3.451e-08
25- 50 2.633e-06 1.448e-07
50-150 1.069e-05 4.597e-07
15-150 1.380e-05 5.155e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 2.68136 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 230.83 using 59 PHA bins.
# Reduced chi-squared = 4.0496 for 57 degrees of freedom
# Null hypothesis probability = 8.845222e-23
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.912e-06 7.590e-08
25- 50 3.679e-06 1.432e-07
50-150 8.068e-06 3.007e-07
15-150 1.366e-05 4.912e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.96106 (-1.09826 1.22847)
R1^2/D10^2 : 0.239325 (-0.078906 0.128093)
kT2 [keV] : 41.5744 (-5.50954 8.67325)
R2^2/D10^2 : 2.43755E-03 (-0.0010169 0.00132939)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.19 using 59 PHA bins.
# Reduced chi-squared = 1.149 for 55 degrees of freedom
# Null hypothesis probability = 2.094299e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.221e-06 1.445e-07
25- 50 3.301e-06 2.797e-07
50-150 1.131e-05 1.233e-06
15-150 1.583e-05 1.601e-06
Peak spectrum fit
Power-law model
Time interval is from -4.084 sec. to -3.084 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.933374 ( -0.222595 0.214783 )
Norm@50keV : 3.86648E-02 ( -0.00519359 0.0051176 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.73 using 59 PHA bins.
# Reduced chi-squared = 0.6794 for 57 degrees of freedom
# Null hypothesis probability = 9.695584e-01
Photon flux (15-150 keV) in 1 sec: 0.154033 ( -0.01891 0.123661 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.2847e-07 ( -5.56837e-08 5.57247e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -4.084 sec. to -3.084 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.629182 ( -0.947092 0.488396 )
Epeak [keV] : 291.553 ( -291.553 -291.553 )
Norm@50keV : 5.10521E-02 ( -0.0167197 0.0635603 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.32 using 59 PHA bins.
# Reduced chi-squared = 0.6843 for 56 degrees of freedom
# Null hypothesis probability = 9.658834e-01
Photon flux (15-150 keV) in 1 sec: 0.328211 ( -0.328211 -0.302782 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.28046e-07 ( -5.63225e-08 5.6171e-08 ) ergs/cm2
Band function
Time interval is from -4.084 sec. to -3.084 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 26.4958 (-4.30404 5.45048)
R^2/D10^2 : 9.31122E-02 (-0.0401389 0.0674168)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.52 using 59 PHA bins.
# Reduced chi-squared = 0.8337 for 57 degrees of freedom
# Null hypothesis probability = 8.102972e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.100e-08 3.036e-09
25- 50 6.423e-08 1.426e-08
50-150 3.308e-07 6.685e-08
15-150 4.061e-07 7.010e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-25.3201 -200)
Norm : 18.5430 (-2.48867 2.48867)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.64 using 59 PHA bins.
# Reduced chi-squared = 1.081 for 57 degrees of freedom
# Null hypothesis probability = 3.136050e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.619e-08 2.625e-08
25- 50 8.885e-08 4.979e-08
50-150 1.949e-07 1.098e-07
15-150 3.299e-07 1.798e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.78996 (-3.87746 6.21073)
R1^2/D10^2 : 1.38574 (-1.081 8.85248)
kT2 [keV] : 37.5702 (-9.793 40.6139)
R2^2/D10^2 : 2.82605E-02 (-0.0236314 0.060935)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.60 using 59 PHA bins.
# Reduced chi-squared = 0.6836 for 55 degrees of freedom
# Null hypothesis probability = 9.648995e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.596e-08 1.505e-08
25- 50 7.815e-08 4.134e-08
50-150 3.328e-07 1.812e-07
15-150 4.369e-07 2.286e-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: 1.04458 ( -0.0563744 0.0557191 )
Norm@50keV : 1.48877E-02 ( -0.000486669 0.000484387 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.09 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 57 degrees of freedom
# Null hypothesis probability = 2.418475e-01
Photon flux (15-150 keV) in 93.99 sec: 1.71878 ( -0.0589824 0.0592812 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.48991e-05 ( -4.57172e-07 4.57467e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.03922 ( -0.0572973 0.0556746 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 1.49745E-02 ( -0.000460397 0.00310838 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.10 using 59 PHA bins.
# Reduced chi-squared = 1.145 for 56 degrees of freedom
# Null hypothesis probability = 2.137773e-01
Photon flux (15-150 keV) in 93.99 sec: 1.71860 ( -0.0574 0.05867 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.49048e-05 ( -4.52092e-07 4.48144e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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) = 3.15e-06
S(50-100 keV) = 5.76e-06
T90 vs. Hardness ratio plot
T90 = 86.5600000619888 sec.
Hardness ratio (energy fluence ratio) = 1.82857
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.69375
Count Ratio (50-100 keV) / (15-25 keV) = 1.84549
Mask shadow pattern
IMX = 1.132877569568501E+00, IMY = -2.673935363469832E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
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:
-239.784000 -56.472000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
50.1428 -43.0455 2.0 53.3 178.6 4.0746 5.7 ------ UNKNOWN
7.3223 52.8801 2.7 49.5 1.0 1.7468 4.3 ------ UNKNOWN
355.7140 57.3966 3.0 56.9 -2.7 3.1758 3.9 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-56.472000 37.516600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
68.1471 -24.8741 2.1 49.6 148.9 3.6639 5.5 ------ UNKNOWN
22.6030 55.7366 0.3 49.3 13.3 20.6319 33.7 ------ UNKNOWN
33.5522 -51.1261 3.3 57.9 -165.6 3.3548 3.5 ------ UNKNOWN
356.1493 -23.4141 2.4 43.8 -116.4 3.5158 4.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
102.316600 712.876400
720.216000 789.916600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
307.9163 41.0438 19.7 49.1 -44.9 1.7023 0.6 10.3 Cyg X-3
326.2783 38.3676 9.1 40.7 -61.5 2.1520 1.3 5.7 Cyg X-2
84.3187 43.0823 3.0 40.6 110.6 8.0812 3.9 ------ UNKNOWN
40.8925 61.4093 1.2 11.1 81.0 4.7926 9.4 ------ UNKNOWN
43.8656 17.7400 2.5 41.3 177.7 4.2723 4.6 ------ UNKNOWN
35.2654 1.8026 3.2 54.9 -166.3 6.4061 3.6 ------ UNKNOWN
335.6743 32.1729 3.3 40.0 -76.7 6.8556 3.5 ------ UNKNOWN
344.2517 25.7622 4.8 40.8 -91.9 6.4061 2.4 ------ UNKNOWN
6.5231 9.3798 2.7 48.0 -129.2 11.2839 4.2 ------ UNKNOWN
Plot creation:
Thu Mar 21 16:37:01 EDT 2019