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
331.1428 -14.6666 0.0099 23.6561 74.6441 3.4971150 19.441 TRIG_00830822
Foreground time interval of the image:
-44.296 52.125 (delta_t = 96.421 [sec])
Background time interval of the image:
-220.075 -44.296 (delta_t = 175.779 [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 -44.296 sec. to 133.688 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.48944 ( -0.140513 0.141752 )
Norm@50keV : 1.38660E-03 ( -0.000107983 0.000107372 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.30 using 59 PHA bins.
# Reduced chi-squared = 1.075 for 57 degrees of freedom
# Null hypothesis probability = 3.244203e-01
Photon flux (15-150 keV) in 178 sec: 0.172619 ( -0.013247 0.013271 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.34579e-06 ( -2.02455e-07 2.0462e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -44.296 sec. to 133.688 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.48939 ( -0.14357 0.139892 )
Epeak [keV] : 9999.22 ( -9999.36 -9999.36 )
Norm@50keV : 1.38881E-03 ( -0.00139033 0.000795429 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.31 using 59 PHA bins.
# Reduced chi-squared = 1.095 for 56 degrees of freedom
# Null hypothesis probability = 2.913244e-01
Photon flux (15-150 keV) in 178 sec: 0.173705 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.36793e-06 ( -2.30168e-07 1.79307e-07 ) ergs/cm2
Band function
Time interval is from -44.296 sec. to 133.688 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] : 14.7067 (-1.49301 1.71935)
R^2/D10^2 : 2.03202E-02 (-0.00651545 0.00930622)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 110.34 using 59 PHA bins.
# Reduced chi-squared = 1.9359 for 57 degrees of freedom
# Null hypothesis probability = 2.909476e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.643e-07 2.372e-08
25- 50 6.409e-07 6.755e-08
50-150 9.349e-07 1.447e-07
15-150 1.740e-06 1.574e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-45.9718 -200)
Norm : 0.701504 (-0.0528533 0.0528533)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.67 using 59 PHA bins.
# Reduced chi-squared = 1.117 for 57 degrees of freedom
# Null hypothesis probability = 2.534650e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.119e-07 3.008e-08
25- 50 6.001e-07 8.953e-08
50-150 1.316e-06 4.335e-07
15-150 2.228e-06 5.659e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.74264 (-2.4405 2.31073)
R1^2/D10^2 : 0.135924 (-0.0746608 0.1813)
kT2 [keV] : 34.1110 (-11.8551 43.7843)
R2^2/D10^2 : 9.32166E-04 (-0.000784915 0.00295593)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.23 using 59 PHA bins.
# Reduced chi-squared = 1.204 for 55 degrees of freedom
# Null hypothesis probability = 1.426801e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.835e-07 8.167e-08
25- 50 6.027e-07 1.614e-07
50-150 1.493e-06 7.211e-07
15-150 2.379e-06 8.391e-07
Peak spectrum fit
Power-law model
Time interval is from 16.804 sec. to 17.804 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.50832 ( -0.435065 0.442896 )
Norm@50keV : 6.66721E-03 ( -0.00165302 0.0015933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.79 using 59 PHA bins.
# Reduced chi-squared = 1.014 for 57 degrees of freedom
# Null hypothesis probability = 4.460446e-01
Photon flux (15-150 keV) in 1 sec: 0.834226 ( -0.190348 0.190624 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.31713e-08 ( -1.6947e-08 1.74667e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 16.804 sec. to 17.804 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.52007 ( -1.00746 0.432987 )
Epeak [keV] : 9999.34 ( -9999.36 -9999.36 )
Norm@50keV : 6.66440E-03 ( -0.00164834 0.0159544 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.79 using 59 PHA bins.
# Reduced chi-squared = 1.032 for 56 degrees of freedom
# Null hypothesis probability = 4.088281e-01
Photon flux (15-150 keV) in 1 sec: 0.836233 ( -0.194451 0.190297 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.25904e-08 ( 0 0 ) ergs/cm2
Band function
Time interval is from 16.804 sec. to 17.804 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] : 11.2957 (-3.14236 6.44506)
R^2/D10^2 : 0.243951 (-0.192931 0.562749)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.14 using 59 PHA bins.
# Reduced chi-squared = 1.160 for 57 degrees of freedom
# Null hypothesis probability = 1.905944e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.535e-09 3.266e-09
25- 50 1.911e-08 1.116e-08
50-150 1.405e-08 8.203e-09
15-150 3.970e-08 1.553e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.362 (-125.347 -199.363)
Norm : 3.38608 (-0.770835 0.771504)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.45 using 59 PHA bins.
# Reduced chi-squared = 1.025 for 57 degrees of freedom
# Null hypothesis probability = 4.219554e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.432e-09 4.970e-09
25- 50 1.622e-08 9.550e-09
50-150 3.557e-08 2.077e-08
15-150 6.022e-08 3.554e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.70911 (-2.6188 3.2659)
R1^2/D10^2 : 0.817653 (-0.590364 2.87947)
kT2 [keV] : 68.6998 (-44.2891 -68.7005)
R2^2/D10^2 : 8.42282E-04 (-0.000761911 0.00692951)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.73 using 59 PHA bins.
# Reduced chi-squared = 1.013 for 55 degrees of freedom
# Null hypothesis probability = 4.472944e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.872e-09 5.315e-09
25- 50 1.657e-08 9.650e-09
50-150 4.416e-08 2.267e-08
15-150 6.960e-08 3.467e-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: 1.53065 ( -0.127898 0.129156 )
Norm@50keV : 2.28471E-03 ( -0.000162509 0.000161541 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.40 using 59 PHA bins.
# Reduced chi-squared = 0.8667 for 57 degrees of freedom
# Null hypothesis probability = 7.525822e-01
Photon flux (15-150 keV) in 96.42 sec: 0.287637 ( -0.0200347 0.0200742 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.07975e-06 ( -1.62821e-07 1.64278e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.53431 ( -0.132484 0.126406 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 2.28615E-03 ( -0.00228933 0.00144348 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.41 using 59 PHA bins.
# Reduced chi-squared = 0.8824 for 56 degrees of freedom
# Null hypothesis probability = 7.206947e-01
Photon flux (15-150 keV) in 96.42 sec: 0.287649 ( -0.020552 0.01994 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.07169e-06 ( -1.69468e-07 1.74038e-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) = 5.77e-07
S(50-100 keV) = 8.22e-07
T90 vs. Hardness ratio plot
T90 = 115.263999819756 sec.
Hardness ratio (energy fluence ratio) = 1.42461
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.21459
Count Ratio (50-100 keV) / (15-25 keV) = 0.930136
Mask shadow pattern
IMX = 1.160035673997685E-01, IMY = -4.224173148142144E-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:
-220.075400 -44.296000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
308.1078 40.9258 16.7 55.4 166.8 0.6994 0.7 1.6 Cyg X-3
326.1568 38.1342 0.0 43.7 177.3 0.8332 2.3 11.3 Cyg X-2
342.9932 17.0357 3.1 18.1 -176.8 0.6328 3.6 ------ UNKNOWN
15.0478 19.5156 3.5 31.4 -105.0 1.0431 3.3 ------ UNKNOWN
16.2237 41.8213 2.6 48.0 -129.0 3.9798 4.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-44.296000 52.124600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
308.0439 40.8624 4.3 55.5 166.7 -2.0448 -2.7 6.2 Cyg X-3
326.2428 38.4372 12.2 43.9 177.6 0.2401 1.0 7.7 Cyg X-2
319.7030 2.3227 2.4 30.1 118.7 1.0191 4.7 ------ UNKNOWN
331.1428 -14.6666 0.6 23.7 74.6 3.4971 19.5 ------ UNKNOWN
18.5058 -26.7269 2.4 38.6 -19.1 0.9326 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
97.124600 719.454800
720.824000 962.944000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.8408 10.9666 4.1 49.1 140.3 8.7765 2.8 2.8 GRS 1915+105
326.3249 38.2971 7.4 53.1 -163.5 3.0522 1.6 7.4 Cyg X-2
288.6205 -19.4607 4.4 40.8 98.3 6.6147 2.6 ------ UNKNOWN
288.9193 -16.5719 2.6 40.6 102.7 10.4037 4.4 ------ UNKNOWN
303.5025 -39.4834 3.7 34.7 60.2 3.2807 3.1 ------ UNKNOWN
341.5859 -69.7894 3.3 55.5 16.9 10.6694 3.5 ------ UNKNOWN
351.4508 -62.4560 2.9 49.9 9.1 5.2569 4.0 ------ UNKNOWN
343.6970 33.9262 3.7 50.0 -145.2 7.1421 3.1 ------ UNKNOWN
355.5322 27.1159 3.8 48.0 -129.2 9.4685 3.1 ------ UNKNOWN
Plot creation:
Thu May 31 18:07:29 EDT 2018