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
66.0055 13.3860 0.0163 24.6400 -141.1272 1.0734494 11.843 TRIG_00820347
Foreground time interval of the image:
0.584 48.584 (delta_t = 48.000 [sec])
Background time interval of the image:
-200.115 0.584 (delta_t = 200.699 [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 8.192000
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 8.192000
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 8.192000
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 0.584 sec. to 48.584 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.47119 ( -0.193431 0.195189 )
Norm@50keV : 1.49925E-03 ( -0.00018279 0.000181745 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.30 using 59 PHA bins.
# Reduced chi-squared = 1.128 for 57 degrees of freedom
# Null hypothesis probability = 2.362582e-01
Photon flux (15-150 keV) in 48 sec: 0.185757 ( -0.022057 0.02208 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.86122e-07 ( -9.1417e-08 9.27058e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.584 sec. to 48.584 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.176427 ( -1.16458 0.90959 )
Epeak [keV] : 66.4153 ( -13.6063 48.0973 )
Norm@50keV : 7.19515E-03 ( -0.00719516 0.0218728 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.91 using 59 PHA bins.
# Reduced chi-squared = 1.034 for 56 degrees of freedom
# Null hypothesis probability = 4.047856e-01
Photon flux (15-150 keV) in 48 sec: 0.176622 ( -0.022965 0.022981 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.1453e-07 ( -9.85632e-08 1.03779e-07 ) ergs/cm2
Band function
Time interval is from 0.584 sec. to 48.584 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.176258 ( -0.814105 0.76735 )
beta : -10.00000 ( 10 2.25143e-07 )
Epeak [keV] : 66.4017 ( -11.8982 48.1286 )
Norm@50keV : 7.19718E-03 ( -0.00719718 0.0219034 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.91 using 59 PHA bins.
# Reduced chi-squared = 1.053 for 55 degrees of freedom
# Null hypothesis probability = 3.685531e-01
Photon flux (15-150 keV) in 48 sec: 0.177126 ( -0.022921 0.023301 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.27437e-07 ( -9.83568e-08 1.07468e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.1431 (-1.75585 2.07961)
R^2/D10^2 : 2.69773E-02 (-0.0104313 0.0162599)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.07 using 59 PHA bins.
# Reduced chi-squared = 1.106 for 57 degrees of freedom
# Null hypothesis probability = 2.705527e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.466e-08 1.168e-08
25- 50 2.053e-07 3.473e-08
50-150 2.719e-07 6.701e-08
15-150 5.319e-07 8.638e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.362 (-78.8291 -199.363)
Norm : 0.766104 (-0.0893653 0.0894473)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.88 using 59 PHA bins.
# Reduced chi-squared = 1.086 for 57 degrees of freedom
# Null hypothesis probability = 3.061603e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.157e-08 5.110e-08
25- 50 1.761e-07 9.703e-08
50-150 3.863e-07 2.139e-07
15-150 6.540e-07 3.566e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.83110 (-5.01754 4.54195)
R1^2/D10^2 : 7.98275E-02 (-0.0494438 0.834591)
kT2 [keV] : 23.0840 (-11.2514 -23.0844)
R2^2/D10^2 : 3.12342E-03 (-0.00306843 0.0100269)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.55 using 59 PHA bins.
# Reduced chi-squared = 1.046 for 55 degrees of freedom
# Null hypothesis probability = 3.808705e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.205e-08 4.051e-08
25- 50 1.974e-07 1.047e-07
50-150 3.555e-07 1.889e-07
15-150 6.249e-07 3.158e-07
Peak spectrum fit
Power-law model
Time interval is from 8.084 sec. to 9.084 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.13157 ( -0.441217 0.416511 )
Norm@50keV : 4.68292E-03 ( -0.00124039 0.00123826 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.31 using 59 PHA bins.
# Reduced chi-squared = 0.9002 for 57 degrees of freedom
# Null hypothesis probability = 6.874071e-01
Photon flux (15-150 keV) in 1 sec: 0.544997 ( -0.147859 0.148862 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.84808e-08 ( -1.36326e-08 1.3841e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 8.084 sec. to 9.084 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.813540 ( -3.93784 2.06794 )
Epeak [keV] : 77.1786 ( -22.8128 -77.1569 )
Norm@50keV : 3.84366E-02 ( -0.0385034 1.81629 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.91 using 59 PHA bins.
# Reduced chi-squared = 0.8733 for 56 degrees of freedom
# Null hypothesis probability = 7.380184e-01
Photon flux (15-150 keV) in 1 sec: 0.507751 ( -0.154901 0.155902 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.33611e-08 ( -1.41277e-08 1.52041e-08 ) ergs/cm2
Band function
Time interval is from 8.084 sec. to 9.084 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.767100 ( -0.976478 2.42028 )
beta : -10.00000 ( 10 20 )
Epeak [keV] : 77.5693 ( -21.0572 647.082 )
Norm@50keV : 3.68241E-02 ( -0.00942007 1.60619 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.91 using 59 PHA bins.
# Reduced chi-squared = 0.8892 for 55 degrees of freedom
# Null hypothesis probability = 7.053145e-01
Photon flux (15-150 keV) in 1 sec: 0.544994 ( -0.14787 0.148867 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.4153e-08 ( -1.12852e-08 1.46352e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 18.4130 (-4.43994 6.72132)
R^2/D10^2 : 3.54992E-02 (-0.0230537 0.0544134)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.04 using 59 PHA bins.
# Reduced chi-squared = 0.8604 for 57 degrees of freedom
# Null hypothesis probability = 7.641136e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.392e-09 1.221e-09
25- 50 1.125e-08 5.425e-09
50-150 2.784e-08 1.609e-08
15-150 4.148e-08 2.268e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-88.2311 -199.363)
Norm : 2.26824 (-0.61417 0.614196)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.35 using 59 PHA bins.
# Reduced chi-squared = 0.9360 for 57 degrees of freedom
# Null hypothesis probability = 6.128177e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.648e-09 3.303e-09
25- 50 1.087e-08 6.390e-09
50-150 2.383e-08 1.433e-08
15-150 4.034e-08 2.381e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.06038E-02 (0.822496 -0.0306038)
R1^2/D10^2 : 4.32775E+22 (-4.32775e+22 -4.32775e+22)
kT2 [keV] : 18.4130 (-4.4399 6.72136)
R2^2/D10^2 : 3.54994E-02 (-0.0230536 0.0544134)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.04 using 59 PHA bins.
# Reduced chi-squared = 0.8917 for 55 degrees of freedom
# Null hypothesis probability = 7.003723e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: 1.47119 ( -0.193431 0.195189 )
Norm@50keV : 1.49925E-03 ( -0.00018279 0.000181745 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.30 using 59 PHA bins.
# Reduced chi-squared = 1.128 for 57 degrees of freedom
# Null hypothesis probability = 2.362582e-01
Photon flux (15-150 keV) in 48 sec: 0.185752 ( -0.0220559 0.0220795 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.8603e-07 ( -9.13834e-08 9.27432e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.176432 ( -1.16458 0.90959 )
Epeak [keV] : 66.4154 ( -13.6063 48.0973 )
Norm@50keV : 7.19511E-03 ( -0.00719516 0.0218728 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.91 using 59 PHA bins.
# Reduced chi-squared = 1.034 for 56 degrees of freedom
# Null hypothesis probability = 4.047856e-01
Photon flux (15-150 keV) in 48 sec: 0.176606 ( -0.022959 0.022978 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.14736e-07 ( -9.86688e-08 1.03872e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.176258 ( -0.814105 0.76735 )
beta : -10.00000 ( 10 2.25143e-07 )
Epeak [keV] : 66.4017 ( -11.8982 48.1286 )
Norm@50keV : 7.19718E-03 ( -0.00719718 0.0219034 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.91 using 59 PHA bins.
# Reduced chi-squared = 1.053 for 55 degrees of freedom
# Null hypothesis probability = 3.685531e-01
Photon flux (15-150 keV) in 48 sec: 0.177126 ( -0.022921 0.023301 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.27437e-07 ( -9.83568e-08 1.07468e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 1.67e-07
S(50-100 keV) = 2.41e-07
T90 vs. Hardness ratio plot
T90 = 48 sec.
Hardness ratio (energy fluence ratio) = 1.44311
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.03411
Count Ratio (50-100 keV) / (15-25 keV) = 1.29583
Mask shadow pattern
IMX = -3.571011420068040E-01, IMY = 2.878646867855455E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
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:
-200.115380 0.584000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6408 22.0107 0.3 10.5 172.6 8.3606 45.1 0.5 Crab
95.2752 42.1239 3.4 13.7 37.8 0.6630 3.4 ------ UNKNOWN
164.6997 83.9114 2.8 56.8 3.1 4.1710 4.1 ------ UNKNOWN
76.3691 -25.4649 3.1 58.3 -177.1 5.2201 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.584000 48.584000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.8048 22.1529 0.0 10.4 171.7 0.1676 2.1 12.7 Crab
66.0055 13.3860 1.0 24.6 -141.1 1.0734 11.8 ------ UNKNOWN
45.7553 10.6568 2.7 40.6 -118.1 0.9187 4.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
96.284600 962.656000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6356 22.0202 0.2 18.8 64.5 36.6020 53.0 0.4 Crab
88.2150 0.8449 2.7 25.3 122.1 3.3263 4.3 ------ UNKNOWN
83.2427 0.8658 2.7 21.2 129.1 3.0647 4.3 ------ UNKNOWN
82.4525 56.7788 3.0 45.2 16.8 4.6619 3.8 ------ UNKNOWN
66.9857 -42.3533 2.3 55.8 -176.7 13.1556 4.9 ------ UNKNOWN
56.2557 26.8622 2.5 16.3 -28.6 2.8021 4.7 ------ UNKNOWN
48.9573 41.7804 3.6 32.0 -20.2 2.2381 3.2 ------ UNKNOWN
30.8887 -19.9060 2.7 48.0 -129.1 16.2222 4.2 ------ UNKNOWN
Plot creation:
Wed May 30 17:12:00 EDT 2018