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
4.7221 1.2639 0.0204 18.2118 158.3171 0.2992216 9.367 TRIG_00754549
Foreground time interval of the image:
-0.072 8.716 (delta_t = 8.788 [sec])
Background time interval of the image:
-277.163 -259.056 (delta_t = 18.107 [sec])
-239.064 -0.072 (delta_t = 238.992 [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 5.504000
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 5.504000
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 5.504000
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 -0.072 sec. to 8.716 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.11795 ( -0.408326 0.385241 )
Norm@50keV : 1.98798E-03 ( -0.000373191 0.000370257 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.24 using 59 PHA bins.
# Reduced chi-squared = 1.092 for 57 degrees of freedom
# Null hypothesis probability = 2.951490e-01
Photon flux (15-150 keV) in 8.788 sec: 0.231007 ( -0.045264 0.045361 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.81648e-07 ( -3.77217e-08 3.79509e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.072 sec. to 8.716 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.11557 ( -0.445559 0.357498 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 1.99848E-03 ( -0.000370089 -0.00199847 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.27 using 59 PHA bins.
# Reduced chi-squared = 1.112 for 56 degrees of freedom
# Null hypothesis probability = 2.631191e-01
Photon flux (15-150 keV) in 8.788 sec: 0.231079 ( -0.045398 0.045233 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.81355e-07 ( -3.75285e-08 3.80969e-08 ) ergs/cm2
Band function
Time interval is from -0.072 sec. to 8.716 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] : 26.9579 (-7.53406 13.4676)
R^2/D10^2 : 4.08113E-03 (-0.00270926 0.00697197)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.21 using 59 PHA bins.
# Reduced chi-squared = 1.302 for 57 degrees of freedom
# Null hypothesis probability = 6.251065e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.344e-09 2.151e-09
25- 50 2.557e-08 1.039e-08
50-150 1.358e-07 5.673e-08
15-150 1.657e-07 6.736e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-64.6091 -200)
Norm : 0.956366 (-0.183246 0.183246)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.56 using 59 PHA bins.
# Reduced chi-squared = 1.185 for 57 degrees of freedom
# Null hypothesis probability = 1.597554e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.094e-08 1.218e-08
25- 50 4.028e-08 2.309e-08
50-150 8.834e-08 5.097e-08
15-150 1.496e-07 8.612e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.51800 (-1.77828 1.9358)
R1^2/D10^2 : 1.49439 (-1.29249 17.8811)
kT2 [keV] : 40.1282 (-13.6652 49.145)
R2^2/D10^2 : 1.23577E-03 (-0.00102534 0.00146816)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.63 using 59 PHA bins.
# Reduced chi-squared = 1.048 for 55 degrees of freedom
# Null hypothesis probability = 3.783257e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.316e-08 1.392e-08
25- 50 2.591e-08 1.286e-08
50-150 1.478e-07 8.291e-08
15-150 1.968e-07 9.883e-08
Peak spectrum fit
Power-law model
Time interval is from 1.532 sec. to 2.532 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.55170 ( -0.678913 0.781783 )
Norm@50keV : 3.25643E-03 ( -0.00132059 0.00115707 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.69 using 59 PHA bins.
# Reduced chi-squared = 1.293 for 57 degrees of freedom
# Null hypothesis probability = 6.761998e-02
Photon flux (15-150 keV) in 1 sec: 0.412464 ( -0.136939 0.136811 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.06507e-08 ( -1.25536e-08 1.28203e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.532 sec. to 2.532 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.23821 ( -1.82496 1.2632 )
Epeak [keV] : 87.3210 ( )
Norm@50keV : 1.45389E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.02 using 59 PHA bins.
# Reduced chi-squared = 1.304 for 56 degrees of freedom
# Null hypothesis probability = 6.290808e-02
Photon flux (15-150 keV) in 1 sec: 0.305212 ( -0.305212 0.14707 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.01398e-08 ( 0 0 ) ergs/cm2
Band function
Time interval is from 1.532 sec. to 2.532 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] : 22.9604 (-9.91343 17.3194)
R^2/D10^2 : 1.09190E-02 (-0.0109337 0.0568876)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 78.99 using 59 PHA bins.
# Reduced chi-squared = 1.386 for 57 degrees of freedom
# Null hypothesis probability = 2.857030e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.730e-09 3.727e-09
25- 50 5.114e-09 3.587e-09
50-150 3.797e-10 4.157e-10
15-150 1.122e-08 7.430e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.361 (-199.363 -199.363)
Norm : 1.66445 (-0.555175 0.555655)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.27 using 59 PHA bins.
# Reduced chi-squared = 1.303 for 57 degrees of freedom
# Null hypothesis probability = 6.190924e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.145e-09 2.534e-09
25- 50 7.973e-09 4.932e-09
50-150 1.749e-08 1.141e-08
15-150 2.960e-08 1.850e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.97285 (-1.74704 2.60893)
R1^2/D10^2 : 5.82407 (-5.29358 25.1445)
kT2 [keV] : 31.1530 (-12.1817 45.6138)
R2^2/D10^2 : 3.75275E-03 (-0.00337369 0.00910318)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.97 using 59 PHA bins.
# Reduced chi-squared = 1.272 for 55 degrees of freedom
# Null hypothesis probability = 8.412530e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.681e-09 3.451e-09
25- 50 5.300e-09 2.887e-09
50-150 2.355e-08 1.424e-08
15-150 3.453e-08 1.876e-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: 1.11795 ( -0.408326 0.385241 )
Norm@50keV : 1.98798E-03 ( -0.000373191 0.000370257 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.24 using 59 PHA bins.
# Reduced chi-squared = 1.092 for 57 degrees of freedom
# Null hypothesis probability = 2.951490e-01
Photon flux (15-150 keV) in 8.788 sec: 0.231011 ( -0.0452667 0.0453547 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.81628e-07 ( -3.77134e-08 3.79692e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.11554 ( -0.445625 0.358378 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 1.99847E-03 ( -0.000370089 -0.00199847 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.27 using 59 PHA bins.
# Reduced chi-squared = 1.112 for 56 degrees of freedom
# Null hypothesis probability = 2.631191e-01
Photon flux (15-150 keV) in 8.788 sec: 0.233135 ( -0.048063 0.043667 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.81e-07 ( -3.62039e-08 3.59983e-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) = 3.63e-08
S(50-100 keV) = 6.69e-08
T90 vs. Hardness ratio plot
T90 = 8.31199997663498 sec.
Hardness ratio (energy fluence ratio) = 1.84298
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.835442
Count Ratio (50-100 keV) / (15-25 keV) = 1.02765
Mask shadow pattern
IMX = -3.057317270385411E-01, IMY = -1.215600449943498E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 5.504000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 5.504000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 5.504000
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:
-277.163400 -259.056300
-239.064000 -0.072000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
25.0810 -46.5115 2.4 40.2 39.8 2.0787 4.9 ------ UNKNOWN
54.3741 3.2196 2.9 34.5 -61.5 1.3960 3.9 ------ UNKNOWN
14.2269 46.3874 2.5 53.2 -142.2 5.1190 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.072000 8.716000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
23.1889 -55.1164 1.7 48.7 42.4 1.0306 6.9 ------ UNKNOWN
65.3402 -46.0765 2.5 54.8 7.7 0.6213 4.6 ------ UNKNOWN
4.7220 1.2639 1.2 18.2 158.3 0.2992 9.4 293.3 UNKNOWN
2.9551 33.5832 2.2 43.6 -158.4 0.2999 5.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
107.436590 495.436590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
326.1119 38.2641 10.8 51.2 165.0 1.1068 1.1 4.5 Cyg X-2
333.2171 -24.9891 2.2 40.2 71.2 5.7406 5.2 ------ UNKNOWN
341.9700 -40.3856 3.8 46.5 47.9 3.8518 3.1 ------ UNKNOWN
6.4733 -46.8274 3.1 48.1 22.4 2.8331 3.7 ------ UNKNOWN
12.8568 -21.4299 2.9 24.0 5.1 1.0949 3.9 ------ UNKNOWN
40.0580 13.7204 2.9 37.1 -87.4 3.5061 4.0 ------ UNKNOWN
Plot creation:
Thu Jun 22 11:37:39 EDT 2017