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
280.7374 27.9775 0.0171 12.0798 141.0492 0.4314075 11.219 TRIG_00874334
Foreground time interval of the image:
-0.256 6.756 (delta_t = 7.012 [sec])
Background time interval of the image:
-781.127 -765.111 (delta_t = 16.017 [sec])
-239.528 -0.256 (delta_t = 239.272 [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 2.048000
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 2.048000
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 2.048000
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 -0.256 sec. to 6.756 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.60212 ( -0.239494 0.247205 )
Norm@50keV : 3.78868E-03 ( -0.000581376 0.00057103 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.11 using 59 PHA bins.
# Reduced chi-squared = 0.8441 for 57 degrees of freedom
# Null hypothesis probability = 7.929621e-01
Photon flux (15-150 keV) in 7.012 sec: 0.487199 ( -0.06764 0.067664 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.48418e-07 ( -4.07198e-08 4.16518e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.256 sec. to 6.756 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.988411 ( -1.08595 0.77908 )
Epeak [keV] : 76.1078 ( -26.5757 -76.1071 )
Norm@50keV : 8.12194E-03 ( -0.00473626 0.0223885 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.75 using 59 PHA bins.
# Reduced chi-squared = 0.8348 for 56 degrees of freedom
# Null hypothesis probability = 8.061345e-01
Photon flux (15-150 keV) in 7.012 sec: 0.475734 ( -0.069618 0.06963 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.34613e-07 ( -4.40179e-08 4.59315e-08 ) ergs/cm2
Band function
Time interval is from -0.256 sec. to 6.756 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] : 13.4209 (-2.33797 2.81202)
R^2/D10^2 : 8.07714E-02 (-0.0394988 0.0789335)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.34 using 59 PHA bins.
# Reduced chi-squared = 1.006 for 57 degrees of freedom
# Null hypothesis probability = 4.624130e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.161e-08 5.452e-09
25- 50 7.701e-08 1.552e-08
50-150 8.929e-08 2.688e-08
15-150 1.879e-07 4.067e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 164.728 (-78.9111 -163.368)
Norm : 2.00766 (-0.288699 0.372656)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.01 using 59 PHA bins.
# Reduced chi-squared = 0.8248 for 57 degrees of freedom
# Null hypothesis probability = 8.245555e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.584e-08 1.970e-08
25- 50 6.732e-08 3.657e-08
50-150 1.379e-07 7.966e-08
15-150 2.411e-07 1.346e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.74848 (-1.9573 2.57866)
R1^2/D10^2 : 0.993279 (-0.71421 3.91618)
kT2 [keV] : 20.8028 (-5.23308 10.6259)
R2^2/D10^2 : 1.36864E-02 (-0.0106251 0.0267994)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.07 using 59 PHA bins.
# Reduced chi-squared = 0.8195 for 55 degrees of freedom
# Null hypothesis probability = 8.277966e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.656e-08 2.069e-08
25- 50 6.627e-08 3.506e-08
50-150 1.317e-07 7.534e-08
15-150 2.346e-07 1.242e-07
Peak spectrum fit
Power-law model
Time interval is from 0.692 sec. to 1.692 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.76772 ( -0.333449 0.360491 )
Norm@50keV : 6.63496E-03 ( -0.00161429 0.0015677 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.98 using 59 PHA bins.
# Reduced chi-squared = 1.158 for 57 degrees of freedom
# Null hypothesis probability = 1.941739e-01
Photon flux (15-150 keV) in 1 sec: 0.903134 ( -0.183428 0.183426 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.11801e-08 ( -1.48738e-08 1.54448e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.692 sec. to 1.692 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.281771 ( -2.94003 1.89632 )
Epeak [keV] : 46.0465 ( -10.3694 54.4633 )
Norm@50keV : 0.100873 ( -0.105229 4.38101 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.44 using 59 PHA bins.
# Reduced chi-squared = 1.115 for 56 degrees of freedom
# Null hypothesis probability = 2.580208e-01
Photon flux (15-150 keV) in 1 sec: 0.853061 ( -0.186867 0.188119 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.15146e-08 ( -1.29819e-08 1.66737e-08 ) ergs/cm2
Band function
Time interval is from 0.692 sec. to 1.692 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] : 11.3578 (-2.02767 2.50394)
R^2/D10^2 : 0.287629 (-0.151542 0.304597)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.92 using 59 PHA bins.
# Reduced chi-squared = 1.104 for 57 degrees of freedom
# Null hypothesis probability = 2.746959e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.797e-09 3.272e-09
25- 50 2.296e-08 7.950e-09
50-150 1.714e-08 8.250e-09
15-150 4.789e-08 1.691e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 91.4152 (-43.0222 -91.4375)
Norm : 4.15298 (-1.01079 1.37089)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.24 using 59 PHA bins.
# Reduced chi-squared = 1.127 for 57 degrees of freedom
# Null hypothesis probability = 2.379606e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.084e-08 3.416e-09
25- 50 1.840e-08 7.766e-09
50-150 2.828e-08 2.171e-08
15-150 5.752e-08 2.972e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.41486 (-3.61506 -3.61506)
R1^2/D10^2 : 7.70890 (-6.75464 -6.75464)
kT2 [keV] : 12.3678 (-2.75422 -12.5265)
R2^2/D10^2 : 0.194873 (-0.184569 0.314808)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.81 using 59 PHA bins.
# Reduced chi-squared = 1.124 for 55 degrees of freedom
# Null hypothesis probability = 2.458327e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.402e-09 4.711e-09
25- 50 2.128e-08 1.173e-08
50-150 1.931e-08 1.229e-08
15-150 4.999e-08 2.785e-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: 1.60212 ( -0.239494 0.247205 )
Norm@50keV : 3.78868E-03 ( -0.000581376 0.00057103 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.11 using 59 PHA bins.
# Reduced chi-squared = 0.8441 for 57 degrees of freedom
# Null hypothesis probability = 7.929621e-01
Photon flux (15-150 keV) in 7.012 sec: 0.487183 ( -0.0676372 0.0676601 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.48387e-07 ( -4.0703e-08 4.16647e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.988408 ( -1.08595 0.77908 )
Epeak [keV] : 76.1075 ( -26.5757 -76.1072 )
Norm@50keV : 8.12198E-03 ( -0.00473626 0.0223885 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.75 using 59 PHA bins.
# Reduced chi-squared = 0.8348 for 56 degrees of freedom
# Null hypothesis probability = 8.061345e-01
Photon flux (15-150 keV) in 7.012 sec: 0.475664 ( -0.06959 0.069622 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.34692e-07 ( -4.40382e-08 4.59938e-08 ) 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) = 6.44e-08
S(50-100 keV) = 8.48e-08
T90 vs. Hardness ratio plot
T90 = 6.55999994277954 sec.
Hardness ratio (energy fluence ratio) = 1.31677
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.32632
Count Ratio (50-100 keV) / (15-25 keV) = 0.949029
Mask shadow pattern
IMX = -1.664353036938762E-01, IMY = -1.345400180022847E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000
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:
-781.127400 -765.110600
-239.528000 -0.256000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4765 35.3028 3.3 15.8 26.8 1.0681 3.5 2.6 Her X-1
268.2626 -1.5324 6.2 26.0 -110.4 -0.7375 -1.9 7.9 SW J1753.5-0127
273.9199 -14.1626 6.4 39.1 -118.8 1.1959 1.8 9.1 GX 17+2
288.8338 10.9643 3.7 24.1 -168.9 0.9477 3.2 2.4 GRS 1915+105
299.5792 35.2144 2.0 29.4 131.8 2.7486 5.8 0.9 Cyg X-1
308.1490 40.9877 4.1 37.3 124.3 2.5167 2.8 2.7 Cyg X-3
310.8494 45.1455 3.8 40.3 118.7 3.4591 3.0 ------ UNKNOWN
219.8286 47.6830 2.2 44.2 24.8 2.9799 5.1 ------ UNKNOWN
227.1574 33.9496 3.5 36.5 5.2 1.4095 3.3 ------ UNKNOWN
213.4333 7.8352 3.7 54.5 -27.5 2.9984 3.1 ------ UNKNOWN
233.6614 -6.4685 2.8 45.5 -57.9 5.7294 4.2 ------ UNKNOWN
254.9586 -14.3194 2.4 40.8 -90.1 7.2695 4.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.256000 6.756000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2598 35.2950 8.3 15.9 26.4 0.0535 1.4 10.1 Her X-1
268.4666 -1.5752 88.4 26.1 -110.8 0.0067 0.1 9.4 SW J1753.5-0127
274.0799 -14.0569 3.5 39.0 -119.0 -0.2719 -3.3 4.5 GX 17+2
288.8137 10.8798 5.9 24.1 -168.7 0.0784 2.0 4.0 GRS 1915+105
299.4145 35.1361 5.1 29.2 131.9 0.1322 2.3 9.5 Cyg X-1
308.1172 40.7370 0.0 37.2 124.7 0.2511 2.4 12.9 Cyg X-3
265.8694 52.2342 2.5 27.8 68.0 0.2534 4.6 ------ UNKNOWN
280.7375 27.9775 1.0 12.1 141.0 0.4313 11.2 ------ UNKNOWN
269.2302 -18.2343 2.3 42.7 -111.4 0.8569 5.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
68.572600 962.609400
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4410 35.3340 2.0 23.5 -10.3 4.9408 5.9 1.0 Her X-1
268.4356 -1.3192 15.2 31.6 -101.2 1.0195 0.8 9.0 SW J1753.5-0127
273.8766 -13.9983 7.3 42.5 -115.3 -5.7549 -1.6 7.9 GX 17+2
288.8059 10.9845 1.9 18.6 -150.8 4.9834 6.2 2.4 GRS 1915+105
299.5903 35.1724 1.2 17.6 115.8 8.6680 9.6 1.8 Cyg X-1
308.1468 40.9252 1.4 25.9 107.6 9.4748 8.1 2.3 Cyg X-3
326.0824 38.4245 8.5 38.9 117.2 3.8546 1.4 7.5 Cyg X-2
286.8548 58.6246 2.2 31.0 61.0 6.4837 5.2 ------ UNKNOWN
233.3476 50.2277 2.6 42.0 10.1 5.1213 4.4 ------ UNKNOWN
318.0706 -4.2570 2.6 48.3 -179.3 7.9146 4.5 ------ UNKNOWN
236.7380 21.5906 3.2 40.2 -34.2 4.4494 3.6 ------ UNKNOWN
211.8017 28.8483 2.6 59.7 -16.4 23.2522 4.4 ------ UNKNOWN
230.9106 12.9002 3.6 48.7 -42.7 11.0811 3.2 ------ UNKNOWN
283.8719 -19.9559 2.6 48.0 -129.2 17.7983 4.5 ------ UNKNOWN
236.0370 6.7289 3.6 47.3 -53.3 13.1852 3.2 ------ UNKNOWN
Plot creation:
Mon Dec 17 21:04:18 EST 2018