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
38.0855 60.3333 0.0119 20.0126 -117.5140 1.4856785 16.115 TRIG_00846868
Foreground time interval of the image:
0.596 49.597 (delta_t = 49.001 [sec])
Background time interval of the image:
-239.504 0.596 (delta_t = 240.100 [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 0.596 sec. to 223.720 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.32301 ( -0.239965 0.237634 )
Norm@50keV : 6.18759E-04 ( -8.0287e-05 7.99674e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.13 using 59 PHA bins.
# Reduced chi-squared = 0.9320 for 57 degrees of freedom
# Null hypothesis probability = 6.211805e-01
Photon flux (15-150 keV) in 223.1 sec: 7.41425E-02 ( -0.0096543 0.0096772 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.35681e-06 ( -2.00141e-07 2.02919e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.596 sec. to 223.720 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.31865 ( -0.30439 0.239747 )
Epeak [keV] : 9999.35 ( -9999.36 -9999.36 )
Norm@50keV : 6.21270E-04 ( -0.00054213 0.000480762 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.14 using 59 PHA bins.
# Reduced chi-squared = 0.9489 for 56 degrees of freedom
# Null hypothesis probability = 5.839117e-01
Photon flux (15-150 keV) in 223.1 sec: 7.41348E-02 ( -0.0096658 0.0096687 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.35622e-06 ( -2.00001e-07 2.02866e-07 ) ergs/cm2
Band function
Time interval is from 0.596 sec. to 223.720 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] : 18.1213 (-3.92249 5.02304)
R^2/D10^2 : 4.36670E-03 (-0.00431937 0.00549991)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.97 using 59 PHA bins.
# Reduced chi-squared = 1.368 for 57 degrees of freedom
# Null hypothesis probability = 3.396746e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.391e-08 1.731e-08
25- 50 2.971e-07 7.146e-08
50-150 7.093e-07 1.848e-07
15-150 1.070e-06 2.368e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-53.9248 -200)
Norm : 0.304018 (-0.0393092 0.0393092)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.76 using 59 PHA bins.
# Reduced chi-squared = 0.9958 for 57 degrees of freedom
# Null hypothesis probability = 4.840538e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.689e-07 9.554e-08
25- 50 3.249e-07 1.803e-07
50-150 7.126e-07 3.888e-07
15-150 1.206e-06 6.645e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.63599 (-1.51491 1.91236)
R1^2/D10^2 : 0.101076 (-0.0609934 0.167519)
kT2 [keV] : 36.8836 (-10.8337 28.643)
R2^2/D10^2 : 4.00418E-04 (-0.000305151 0.000742649)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.64 using 59 PHA bins.
# Reduced chi-squared = 0.8843 for 55 degrees of freedom
# Null hypothesis probability = 7.148512e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.670e-07 8.991e-08
25- 50 2.958e-07 1.350e-07
50-150 9.768e-07 5.337e-07
15-150 1.440e-06 6.763e-07
Peak spectrum fit
Power-law model
Time interval is from 8.732 sec. to 9.732 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.01119 ( -0.525557 0.48564 )
Norm@50keV : 5.10118E-03 ( -0.00137742 0.00135702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.44 using 59 PHA bins.
# Reduced chi-squared = 1.113 for 57 degrees of freedom
# Null hypothesis probability = 2.597716e-01
Photon flux (15-150 keV) in 1 sec: 0.587655 ( -0.160047 0.161359 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.49503e-08 ( -1.56958e-08 1.5965e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 8.732 sec. to 9.732 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.817251 ( -1.97513 -0.830448 )
Epeak [keV] : 362.169 ( -407.436 -407.436 )
Norm@50keV : 6.17468E-03 ( -0.00214252 0.0258468 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.45 using 59 PHA bins.
# Reduced chi-squared = 1.133 for 56 degrees of freedom
# Null hypothesis probability = 2.305513e-01
Photon flux (15-150 keV) in 1 sec: 0.584936 ( -0.166451 0.163565 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.47344e-08 ( -1.62398e-08 1.6096e-08 ) ergs/cm2
Band function
Time interval is from 8.732 sec. to 9.732 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] : 26.0788 (-8.55768 15.0719)
R^2/D10^2 : 1.22663E-02 (-0.0122532 0.0293896)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.38 using 59 PHA bins.
# Reduced chi-squared = 1.165 for 57 degrees of freedom
# Null hypothesis probability = 1.850125e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.417e-09 8.940e-10
25- 50 8.207e-09 4.634e-09
50-150 4.109e-08 2.587e-08
15-150 5.071e-08 3.043e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-88.4306 -200)
Norm : 2.41528 (-0.663531 0.663531)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.92 using 59 PHA bins.
# Reduced chi-squared = 1.174 for 57 degrees of freedom
# Null hypothesis probability = 1.730677e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.014e-09 3.682e-09
25- 50 1.157e-08 7.175e-09
50-150 2.537e-08 1.539e-08
15-150 4.296e-08 2.548e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.40259 (-2.79397 6.09696)
R1^2/D10^2 : 0.691637 (-0.684431 5.24817)
kT2 [keV] : 36.3309 (-13.4489 55.8152)
R2^2/D10^2 : 4.13838E-03 (-0.00385798 0.00813379)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.64 using 59 PHA bins.
# Reduced chi-squared = 1.121 for 55 degrees of freedom
# Null hypothesis probability = 2.507608e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.866e-09 3.405e-09
25- 50 9.700e-09 5.280e-09
50-150 4.270e-08 2.466e-08
15-150 5.727e-08 3.201e-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: 1.18360 ( -0.178058 0.175331 )
Norm@50keV : 2.02628E-03 ( -0.000191228 0.000191187 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.29 using 59 PHA bins.
# Reduced chi-squared = 0.9349 for 57 degrees of freedom
# Null hypothesis probability = 6.151411e-01
Photon flux (15-150 keV) in 49 sec: 0.237308 ( -0.0231735 0.0232777 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.01205e-06 ( -1.0667e-07 1.07448e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.17907 ( -0.490086 0.2226 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 2.03611E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.30 using 59 PHA bins.
# Reduced chi-squared = 0.9517 for 56 degrees of freedom
# Null hypothesis probability = 5.778099e-01
Photon flux (15-150 keV) in 49 sec: 0.237211 ( -0.022969 0.023252 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.00999e-06 ( -1.051e-07 1.08672e-07 ) 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) = 3.06e-07
S(50-100 keV) = 4.89e-07
T90 vs. Hardness ratio plot
T90 = 194.807999968529 sec.
Hardness ratio (energy fluence ratio) = 1.59804
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.23512
Count Ratio (50-100 keV) / (15-25 keV) = 1.18378
Mask shadow pattern
IMX = -1.682567517699103E-01, IMY = 3.230260812799193E-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:
-239.504000 0.596000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
307.9621 40.9557 6.4 46.6 134.5 2.0582 1.8 6.7 Cyg X-3
326.1276 38.5227 7.8 35.5 121.1 0.7779 1.5 12.2 Cyg X-2
43.5284 -1.3199 3.4 54.3 -11.6 2.2636 3.4 ------ UNKNOWN
40.9030 61.4447 1.5 21.8 -118.0 2.0672 7.7 ------ UNKNOWN
108.4153 71.7943 4.4 48.0 -129.2 3.1107 2.6 ------ UNKNOWN
124.8305 74.6978 2.7 50.9 -135.4 6.5034 4.3 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.596000 49.596610
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
308.0649 40.8255 10.4 46.6 134.3 -0.4669 -1.1 7.9 Cyg X-3
326.1156 38.1769 5.5 35.7 120.5 0.4072 2.1 9.1 Cyg X-2
38.0855 60.3333 0.7 20.0 -117.5 1.4859 16.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
93.596600 962.592600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
5.2484 22.5557 3.2 44.2 40.9 5.8738 3.6 ------ UNKNOWN
13.1586 11.0476 3.1 52.6 26.3 11.4157 3.8 ------ UNKNOWN
24.2261 49.3771 3.2 13.5 36.8 2.2738 3.7 ------ UNKNOWN
40.8688 61.4354 0.8 1.7 -134.4 9.2940 13.6 ------ UNKNOWN
Plot creation:
Mon Aug 6 22:32:22 EDT 2018