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
41.5415 -55.9318 0.0118 29.3730 26.1962 1.2339635 16.320 TRIG_00753110
Foreground time interval of the image:
-19.856 12.053 (delta_t = 31.909 [sec])
Background time interval of the image:
-239.648 -19.856 (delta_t = 219.792 [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 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)
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 -19.856 sec. to 31.216 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.67082 ( -0.162302 0.171795 )
Norm@50keV : 1.77547E-03 ( -0.000221512 0.000221912 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.01 using 59 PHA bins.
# Reduced chi-squared = 0.8423 for 57 degrees of freedom
# Null hypothesis probability = 7.959120e-01
Photon flux (15-150 keV) in 51.07 sec: 0.388775 ( -0.028559 0.028567 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.55223e-07 ( -8.1114e-08 8.28207e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -19.856 sec. to 31.216 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.14606 ( -1.09289 0.673546 )
Epeak [keV] : 18.9511 ( -18.2501 6.53538 )
Norm@50keV : 1.71562E-02 ( -0.0171562 0.074001 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.93 using 59 PHA bins.
# Reduced chi-squared = 0.6772 for 56 degrees of freedom
# Null hypothesis probability = 9.693693e-01
Photon flux (15-150 keV) in 51.07 sec: 0.369905 ( -0.029808 0.029953 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.45076e-07 ( -8.15991e-08 9.06441e-08 ) ergs/cm2
Band function
Time interval is from -19.856 sec. to 31.216 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] : 6.88044 (-0.531787 0.574179)
R^2/D10^2 : 0.762183 (-0.223813 0.322244)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.82 using 59 PHA bins.
# Reduced chi-squared = 0.9091 for 57 degrees of freedom
# Null hypothesis probability = 6.691439e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.907e-07 3.486e-08
25- 50 3.849e-07 3.789e-08
50-150 5.991e-08 1.768e-08
15-150 7.355e-07 6.460e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 26.6670 (-4.04924 5.00841)
Norm : 3.42711 (-0.556621 0.690561)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.03 using 59 PHA bins.
# Reduced chi-squared = 0.6672 for 57 degrees of freedom
# Null hypothesis probability = 9.749551e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.337e-07 3.271e-08
25- 50 3.561e-07 3.457e-08
50-150 1.662e-07 4.578e-08
15-150 8.560e-07 7.354e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.45355 (-1.4373 1.37632)
R1^2/D10^2 : 3.20972 (-1.92424 12.355)
kT2 [keV] : 10.6731 (-2.53765 6.16266)
R2^2/D10^2 : 7.19842E-02 (-0.0644378 0.141496)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.63 using 59 PHA bins.
# Reduced chi-squared = 0.6842 for 55 degrees of freedom
# Null hypothesis probability = 9.645739e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.320e-07 1.585e-07
25- 50 3.552e-07 1.788e-07
50-150 1.511e-07 8.884e-08
15-150 8.384e-07 4.257e-07
Peak spectrum fit
Power-law model
Time interval is from 1.268 sec. to 2.268 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.69494 ( -0.310306 0.357563 )
Norm@50keV : 5.96856E-03 ( -0.0016134 0.00163597 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.34 using 59 PHA bins.
# Reduced chi-squared = 1.322 for 57 degrees of freedom
# Null hypothesis probability = 5.231707e-02
Photon flux (15-150 keV) in 1 sec: 1.32786 ( -0.1962 0.19629 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.34001e-08 ( -1.15929e-08 1.21526e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.268 sec. to 2.268 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.666360 ( -2.2724 1.27614 )
Epeak [keV] : 21.3783 ( )
Norm@50keV : 0.134283 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.27 using 59 PHA bins.
# Reduced chi-squared = 1.273 for 56 degrees of freedom
# Null hypothesis probability = 8.215159e-02
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 1.268 sec. to 2.268 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] : 6.75885 (-0.994911 1.10464)
R^2/D10^2 : 2.98364 (-1.41583 2.89882)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.15 using 59 PHA bins.
# Reduced chi-squared = 1.301 for 57 degrees of freedom
# Null hypothesis probability = 6.301696e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.108e-08 4.780e-09
25- 50 2.695e-08 7.035e-09
50-150 3.927e-09 2.050e-09
15-150 5.196e-08 1.187e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.1846 (-6.74956 9.93131)
Norm : 12.7037 (-3.56428 5.35751)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.64 using 59 PHA bins.
# Reduced chi-squared = 1.257 for 57 degrees of freedom
# Null hypothesis probability = 9.174190e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.338e-08 4.565e-09
25- 50 2.407e-08 5.640e-09
50-150 1.035e-08 5.794e-09
15-150 5.780e-08 1.276e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.02206 (-2.78302 12.2659)
R1^2/D10^2 : 48.8360 (-47.4202 -49.7017)
kT2 [keV] : 8.29642 (-1.91918 6.96736)
R2^2/D10^2 : 1.02111 (-0.99707 2.59146)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.63 using 59 PHA bins.
# Reduced chi-squared = 1.284 for 55 degrees of freedom
# Null hypothesis probability = 7.617008e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.259e-08 1.107e-08
25- 50 2.572e-08 1.461e-08
50-150 7.181e-09 4.719e-09
15-150 5.549e-08 2.759e-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: 2.63782 ( -0.213586 0.231821 )
Norm@50keV : 1.56364E-03 ( -0.000274183 0.000276589 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.55 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 57 degrees of freedom
# Null hypothesis probability = 3.490849e-01
Photon flux (15-150 keV) in 31.91 sec: 0.335048 ( -0.0331905 0.0331911 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.19782e-07 ( -6.31611e-08 6.54008e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.595057 ( -1.69687 1.32079 )
Epeak [keV] : 21.9247 ( -18.1595 5.23365 )
Norm@50keV : 3.66680E-02 ( -0.0369724 0.516643 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.59 using 59 PHA bins.
# Reduced chi-squared = 0.9390 for 56 degrees of freedom
# Null hypothesis probability = 6.048975e-01
Photon flux (15-150 keV) in 31.91 sec: 0.320647 ( -0.033189 0.033434 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.46935e-07 ( -5.59957e-08 6.53676e-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) = 3.21e-07
S(50-100 keV) = 2.01e-07
T90 vs. Hardness ratio plot
T90 = 36.7680000066757 sec.
Hardness ratio (energy fluence ratio) = 0.626168
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.773465
Count Ratio (50-100 keV) / (15-25 keV) = 0.182613
Mask shadow pattern
IMX = 5.050395590385686E-01, IMY = -2.484686641430191E-01
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:
-239.648000 -19.856000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
333.4923 -8.6104 2.7 51.3 150.3 4.5202 4.3 ------ UNKNOWN
91.7248 -57.0023 2.9 53.9 8.1 2.5104 4.0 ------ UNKNOWN
71.4644 -13.1853 3.0 47.1 -52.8 3.6527 3.9 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-19.856000 12.052600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
342.6071 -4.3620 2.2 46.1 161.7 0.8329 5.2 ------ UNKNOWN
41.5415 -55.9319 0.7 29.4 26.2 1.2340 16.3 ------ UNKNOWN
346.7848 6.7715 2.0 50.6 176.5 1.1083 5.7 ------ UNKNOWN
40.2956 -33.0327 2.3 14.7 -24.9 0.3103 5.1 ------ UNKNOWN
4.1510 9.6679 2.2 43.4 -161.7 0.5598 5.3 ------ UNKNOWN
31.4250 15.3457 2.6 45.4 -122.6 1.1805 4.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
66.452620 484.052610
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
318.6687 -75.1718 3.4 35.1 104.8 2.3621 3.4 ------ UNKNOWN
339.6420 -73.5397 3.8 29.7 108.9 1.4059 3.0 ------ UNKNOWN
26.9205 -39.5391 3.3 19.0 -138.4 0.9448 3.5 ------ UNKNOWN
106.8566 -23.7343 3.1 56.7 -17.7 4.6040 3.7 ------ UNKNOWN
Plot creation:
Wed Jun 7 14:11:16 EDT 2017