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
169.6979 -48.3441 0.0202 15.9361 80.3643 0.5702285 9.501 TRIG_00853824
Foreground time interval of the image:
-2.144 14.096 (delta_t = 16.240 [sec])
Background time interval of the image:
-239.472 -2.144 (delta_t = 237.328 [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 -2.144 sec. to 14.096 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.15339 ( -0.333913 0.379878 )
Norm@50keV : 1.69910E-03 ( -0.000430791 0.00041257 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.85 using 59 PHA bins.
# Reduced chi-squared = 0.8395 for 57 degrees of freedom
# Null hypothesis probability = 8.006667e-01
Photon flux (15-150 keV) in 16.24 sec: 0.274603 ( -0.044615 0.044623 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.57914e-07 ( -5.46567e-08 5.75836e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -2.144 sec. to 14.096 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.34121 ( -1.99395 -1.99395 )
Epeak [keV] : 136.642 ( )
Norm@50keV : 1.33115E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.69 using 59 PHA bins.
# Reduced chi-squared = 0.8515 for 56 degrees of freedom
# Null hypothesis probability = 7.776592e-01
Photon flux (15-150 keV) in 16.24 sec: 0.255793 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.54822e-07 ( -6.36843e-08 6.21977e-08 ) ergs/cm2
Band function
Time interval is from -2.144 sec. to 14.096 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] : 8.56784 (-1.53121 1.82309)
R^2/D10^2 : 0.227272 (-0.12052 0.264692)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.82 using 59 PHA bins.
# Reduced chi-squared = 0.9793 for 57 degrees of freedom
# Null hypothesis probability = 5.193913e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.131e-08 1.695e-08
25- 50 1.008e-07 2.676e-08
50-150 3.301e-08 1.698e-08
15-150 1.851e-07 4.930e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 49.1902 (-19.0615 42.3999)
Norm : 1.55897 (-0.412251 0.636054)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.95 using 59 PHA bins.
# Reduced chi-squared = 0.8587 for 57 degrees of freedom
# Null hypothesis probability = 7.672210e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.167e-08 1.432e-08
25- 50 8.805e-08 1.977e-08
50-150 8.418e-08 4.192e-08
15-150 2.339e-07 6.344e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.19150 (-1.08875 2.47398)
R1^2/D10^2 : 2.62013E+04 (-22747.6 5.28324e+06)
kT2 [keV] : 9.72278 (-1.89727 6.64488)
R2^2/D10^2 : 0.129881 (-0.112677 0.10283)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.91 using 59 PHA bins.
#Fit statistic : Chi-Squared = 47.85 using 59 PHA bins.
# Reduced chi-squared = 0.8710 for 55 degrees of freedom
# Reduced chi-squared = 0.8701 for 55 degrees of freedom
# Null hypothesis probability = 7.400853e-01
# Null hypothesis probability = 7.418341e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.520e-08 2.454e-08
25- 50 9.456e-08 3.738e-08
50-150 4.864e-08 2.560e-08
15-150 1.984e-07 7.741e-08
Peak spectrum fit
Power-law model
Time interval is from 1.636 sec. to 2.636 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.11166 ( -0.493693 0.585139 )
Norm@50keV : 4.04425E-03 ( -0.00164071 0.00160402 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.93 using 59 PHA bins.
# Reduced chi-squared = 1.244 for 57 degrees of freedom
# Null hypothesis probability = 1.015116e-01
Photon flux (15-150 keV) in 1 sec: 0.640009 ( -0.180656 0.1809 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.76279e-08 ( -1.31604e-08 1.43609e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.636 sec. to 2.636 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.395312 ( -4.64355 2.67701 )
Epeak [keV] : 32.5443 ( -32.5644 -32.5644 )
Norm@50keV : 0.174593 ( -0.199967 248.605 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.78 using 59 PHA bins.
# Reduced chi-squared = 1.228 for 56 degrees of freedom
# Null hypothesis probability = 1.172913e-01
Photon flux (15-150 keV) in 1 sec: 0.615221 ( -0.170834 0.173932 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 1.636 sec. to 2.636 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] : 8.44958 (-2.05835 2.55286)
R^2/D10^2 : 0.617050 (-0.402133 1.20679)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.97 using 59 PHA bins.
# Reduced chi-squared = 1.210 for 57 degrees of freedom
# Null hypothesis probability = 1.329607e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.272e-09 5.030e-09
25- 50 1.588e-08 9.665e-09
50-150 4.977e-09 3.963e-09
15-150 2.913e-08 1.744e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 44.5198 (-21.6741 72.6842)
Norm : 3.94880 (-1.54055 2.65355)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.82 using 59 PHA bins.
# Reduced chi-squared = 1.225 for 57 degrees of freedom
# Null hypothesis probability = 1.184812e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.373e-09 4.477e-09
25- 50 1.289e-08 7.608e-09
50-150 1.117e-08 8.524e-09
15-150 3.343e-08 1.891e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 198.206 (-198.249 -198.249)
R1^2/D10^2 : 4.31053E-05 (-4.30677e-05 -4.30677e-05)
kT2 [keV] : 7.92842 (-2.03249 2.54535)
R2^2/D10^2 : 0.756344 (-0.502942 1.64432)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.68 using 59 PHA bins.
#Fit statistic : Chi-Squared = 67.87 using 59 PHA bins.
# Reduced chi-squared = 1.249 for 55 degrees of freedom
# Reduced chi-squared = 1.234 for 55 degrees of freedom
# Null hypothesis probability = 1.016905e-01
# Null hypothesis probability = 1.140575e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.821e-09 6.615e-09
25- 50 1.501e-08 9.960e-09
50-150 6.429e-09 6.390e-09
15-150 3.026e-08 2.126e-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: 2.15339 ( -0.333913 0.379878 )
Norm@50keV : 1.69910E-03 ( -0.000430791 0.00041257 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.85 using 59 PHA bins.
# Reduced chi-squared = 0.8395 for 57 degrees of freedom
# Null hypothesis probability = 8.006667e-01
Photon flux (15-150 keV) in 16.24 sec: 0.274578 ( -0.0446113 0.0446193 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.57862e-07 ( -5.46083e-08 5.75909e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.34727 ( -1.54959 0.0217529 )
Epeak [keV] : 138.339 ( )
Norm@50keV : 1.32282E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.68 using 59 PHA bins.
# Reduced chi-squared = 0.8515 for 56 degrees of freedom
# Null hypothesis probability = 7.777940e-01
Photon flux (15-150 keV) in 16.24 sec: 0.274666 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.5674e-07 ( -6.23454e-08 5.78193e-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) = 8.09e-08
S(50-100 keV) = 7.28e-08
T90 vs. Hardness ratio plot
T90 = 13.7120000123978 sec.
Hardness ratio (energy fluence ratio) = 0.899876
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.839173
Count Ratio (50-100 keV) / (15-25 keV) = 0.322338
Mask shadow pattern
IMX = 4.779451202660808E-02, IMY = -2.815104026009791E-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:
-239.472000 -2.144000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5526 -40.5448 0.8 18.0 177.7 3.4230 15.0 1.2 Vela X-1
170.4145 -60.6361 4.2 26.7 97.1 0.9920 2.8 3.0 Cen X-3
186.6603 -62.5897 21.9 32.8 86.8 0.2588 0.5 10.8 GX 301-2
168.6034 0.1516 2.4 36.9 -49.8 2.0332 4.8 ------ UNKNOWN
160.5546 8.3683 3.0 43.7 -64.2 5.0247 3.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-2.144000 14.096000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.6068 -40.4961 3.4 18.0 177.8 -0.1762 -3.4 5.0 Vela X-1
170.2239 -60.6724 9.4 26.7 97.4 -0.0983 -1.2 4.0 Cen X-3
186.4406 -62.6574 8.7 32.8 87.0 0.1427 1.3 9.0 GX 301-2
169.6979 -48.3441 1.2 15.9 80.4 0.5702 9.5 ------ UNKNOWN
171.1543 -15.7785 2.0 23.0 -32.9 0.3265 5.8 ------ UNKNOWN
173.4105 10.3364 1.9 48.0 -47.3 1.0710 6.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
63.428590 716.676000
720.528000 962.563200
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5322 -40.5521 0.7 25.3 -150.7 13.5147 15.7 0.2 Vela X-1
170.1735 -60.6090 1.4 12.3 112.9 5.6313 8.4 4.3 Cen X-3
186.6882 -62.7223 3.0 17.2 87.2 2.7938 3.8 3.0 GX 301-2
230.9387 -67.4912 2.9 35.7 79.1 6.1901 4.0 ------ UNKNOWN
217.5579 -37.2611 3.5 36.2 24.7 3.0750 3.3 ------ UNKNOWN
83.7368 -43.9807 3.1 56.4 173.7 18.7715 3.7 ------ UNKNOWN
219.3931 -18.2742 2.7 50.1 5.3 6.0944 4.3 ------ UNKNOWN
96.0097 -35.3509 2.6 54.2 -171.0 10.7730 4.5 ------ UNKNOWN
204.7309 -12.5777 2.5 46.1 -14.5 5.2215 4.7 ------ UNKNOWN
101.9851 -35.2037 3.8 50.4 -167.1 5.8001 3.1 ------ UNKNOWN
169.1084 -16.1114 3.0 32.2 -66.6 4.6215 3.9 ------ UNKNOWN
204.1547 2.3753 3.5 58.9 -24.3 14.0974 3.3 ------ UNKNOWN
178.0384 -2.0611 3.4 46.8 -54.2 13.0512 3.3 ------ UNKNOWN
120.0833 -16.9293 3.5 50.9 -135.4 16.9585 3.3 ------ UNKNOWN
Plot creation:
Fri Oct 26 12:37:37 EDT 2018