Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.5137 +35.0712 0.0141 22.7 -66.9 2.7354 13.7 TRIG_01111002
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [sec])
Background time interval of the image:
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) 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.
- 5) 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.
- 6) 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
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of 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.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.72477 ( -0.182739 0.188605 )
Norm@50keV : 1.98927E-03 ( -0.000242337 0.000238356 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.93 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.699012e-01
Photon flux (15-150 keV) in 64 sec: 0.266524 ( -0.027754 0.027757 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17661e-06 ( -1.48286e-07 1.5171e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.862883 ( -1.05763 0.808583 )
Epeak [keV] : 55.3525 ( -12.706 149.142 )
Norm@50keV : 6.22939E-03 ( -0.00622992 0.0194027 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.59 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 56 degrees of freedom
# Null hypothesis probability = 4.529158e-01
Photon flux (15-150 keV) in 64 sec: 0.257348 ( -0.029 0.029005 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.062e-06 ( -1.7081e-07 1.83155e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.401654 ( -0.950837 0.388218 )
beta : -2.27969 ( 2.28369 0.552397 )
Epeak [keV] : 46.1776 ( -25.3205 48.6066 )
Norm@50keV : 1.24525E-02 ( -0.0129514 97.4072 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.51 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 55 degrees of freedom
# Null hypothesis probability = 4.555013e-01
Photon flux (15-150 keV) in 64 sec: 0.258083 ( 6.74192 -0.028704 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.08268e-06 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.0992 (-1.24805 1.44358)
R^2/D10^2 : 8.72115E-02 (-0.0318157 0.0485031)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.78 using 59 PHA bins.
# Reduced chi-squared = 1.172 for 57 degrees of freedom
# Null hypothesis probability = 1.762145e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.439e-07 2.797e-08
25- 50 4.116e-07 5.536e-08
50-150 2.884e-07 7.475e-08
15-150 8.440e-07 1.101e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 109.181 (-37.4495 72.0616)
Norm : 1.15453 (-0.147428 0.192819)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.930e-07 2.915e-08
25- 50 3.394e-07 5.126e-08
50-150 5.772e-07 2.527e-07
15-150 1.110e-06 2.762e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.26404 (-3.67788 2.08726)
R1^2/D10^2 : 0.201292 (-0.100207 0.147412)
kT2 [keV] : 29.7505 (-25.2928 -29.8952)
R2^2/D10^2 : 1.38915E-03 (-0.00129458 0.0283895)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.752e-07 5.645e-08
25- 50 3.773e-07 1.612e-07
50-150 5.650e-07 3.057e-07
15-150 1.118e-06 5.092e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.72477 ( -0.182739 0.188605 )
Norm@50keV : 1.98927E-03 ( -0.000242337 0.000238356 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.93 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.699012e-01
Photon flux (15-150 keV) in 64 sec: 0.266524 ( -0.027754 0.027757 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17661e-06 ( -1.48286e-07 1.5171e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.862883 ( -1.05763 0.808583 )
Epeak [keV] : 55.3525 ( -12.706 149.142 )
Norm@50keV : 6.22939E-03 ( -0.00622992 0.0194027 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.59 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 56 degrees of freedom
# Null hypothesis probability = 4.529158e-01
Photon flux (15-150 keV) in 64 sec: 0.257348 ( -0.029 0.029005 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.062e-06 ( -1.7081e-07 1.83155e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.401654 ( -0.950837 0.388218 )
beta : -2.27969 ( 2.28369 0.552397 )
Epeak [keV] : 46.1776 ( -25.3205 48.6066 )
Norm@50keV : 1.24525E-02 ( -0.0129514 97.4072 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.51 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 55 degrees of freedom
# Null hypothesis probability = 4.555013e-01
Photon flux (15-150 keV) in 64 sec: 0.258083 ( 6.74192 -0.028704 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.08268e-06 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.0992 (-1.24805 1.44358)
R^2/D10^2 : 8.72115E-02 (-0.0318157 0.0485031)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.439e-07 2.925e-08
25- 50 4.116e-07 5.264e-08
50-150 2.884e-07 8.144e-08
15-150 8.440e-07 1.098e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 109.181 (-37.4495 72.0616)
Norm : 1.15453 (-0.147428 0.192819)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.930e-07 2.739e-08
25- 50 3.394e-07 4.442e-08
50-150 5.772e-07 2.823e-07
15-150 1.110e-06 3.011e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.26404 (-3.67788 2.08726)
R1^2/D10^2 : 0.201292 (-0.100207 0.150334)
kT2 [keV] : 29.7505 (-25.2928 -29.8952)
R2^2/D10^2 : 1.38915E-03 (-0.00129458 0.0283895)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.752e-07 6.769e-08
25- 50 3.773e-07 1.653e-07
50-150 5.650e-07 3.020e-07
15-150 1.118e-06 5.026e-07
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: 1.72477 ( -0.182739 0.188605 )
Norm@50keV : 1.98927E-03 ( -0.000242337 0.000238356 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.93 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.699012e-01
Photon flux (15-150 keV) in 64 sec: 0.266524 ( -0.027754 0.027757 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17661e-06 ( -1.48286e-07 1.5171e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.862883 ( -1.05763 0.808583 )
Epeak [keV] : 55.3525 ( -12.706 149.142 )
Norm@50keV : 6.22939E-03 ( -0.00622992 0.0194027 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.59 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 56 degrees of freedom
# Null hypothesis probability = 4.529158e-01
Photon flux (15-150 keV) in 64 sec: 0.257348 ( -0.029 0.029005 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.062e-06 ( -1.7081e-07 1.83155e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.401654 ( -0.950837 0.388218 )
beta : -2.27969 ( 2.28369 0.552397 )
Epeak [keV] : 46.1776 ( -25.3205 48.6066 )
Norm@50keV : 1.24525E-02 ( -0.0129514 97.4072 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.51 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 55 degrees of freedom
# Null hypothesis probability = 4.555013e-01
Photon flux (15-150 keV) in 64 sec: 0.258083 ( 6.74192 -0.028704 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.08268e-06 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.22e-07
S(50-100 keV) = 3.89e-07
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 1.20807
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.22313
Count Ratio (50-100 keV) / (15-25 keV) = 0.658685
Mask shadow pattern
IMX = 1.637443928186602E-01, IMY = 3.844897676353384E-01
TIME vs. PHA plot around the trigger time
TIME vs. DetID plot around the trigger time
100 us light curve (15-350 keV)
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:
-239.000000 -219.280000
-119.000000 70.600600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4643 35.3455 257.1 32.4 -150.0 -0.0238 -0.0 0.4 Her X-1
268.5058 -1.4873 15.9 24.1 121.4 -0.4021 -0.7 8.5 SW J1753.5-0127
274.0069 -14.0360 407.8 32.5 98.4 -0.0234 -0.0 0.1 GX 17+2
288.7736 10.9642 5.5 7.3 42.9 -0.8289 -2.1 1.8 GRS 1915+105
299.5041 35.0787 0.6 22.7 -67.0 8.6431 18.4 8.5 Cyg X-1
308.1112 40.9758 61.1 31.6 -65.2 -0.1098 -0.2 1.4 Cyg X-3
326.1838 38.2513 6.2 42.3 -49.5 1.7332 1.9 4.3 Cyg X-2
265.2653 -4.5833 3.1 28.6 122.5 2.3975 3.7 ------ UNKNOWN
236.1396 3.5209 2.9 49.2 159.2 6.0097 3.9 ------ UNKNOWN
299.2090 56.3096 2.2 41.0 -88.1 8.0577 5.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2803 35.3431 7.8 32.5 -150.1 0.3115 1.5 8.7 Her X-1
268.5078 -1.4684 11.5 24.1 121.5 -0.2219 -1.0 8.4 SW J1753.5-0127
274.0229 -14.0907 10.2 32.6 98.3 -0.3593 -1.1 3.4 GX 17+2
288.7388 10.8919 5.3 7.3 43.5 -0.3553 -2.2 4.8 GRS 1915+105
299.5129 35.0708 0.8 22.7 -66.9 2.7357 13.7 8.7 Cyg X-1
308.1670 40.7983 5.2 31.5 -64.9 0.5273 2.2 9.6 Cyg X-3
326.1759 38.2599 9.7 42.3 -49.5 0.4266 1.2 3.7 Cyg X-2
262.9161 -14.8883 3.6 38.2 114.3 1.5852 3.2 ------ UNKNOWN
320.4614 -11.1435 3.3 45.3 25.1 1.1363 3.5 ------ UNKNOWN
299.3811 56.3501 2.2 41.1 -88.0 3.4855 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
135.000590 428.360000
453.000000 963.038500
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.6225 35.1987 5.9 36.4 162.5 4.8500 2.0 11.8 Her X-1
288.7142 11.0797 7.4 25.9 83.8 -3.7384 -1.6 9.4 GRS 1915+105
299.5772 35.2147 0.5 0.1 -88.6 33.8896 22.6 1.0 Cyg X-1
308.0609 41.0861 4.5 9.0 -75.1 3.6285 2.5 8.3 Cyg X-3
325.9923 38.3852 4.4 21.4 -47.6 4.4631 2.6 9.3 Cyg X-2
355.0288 8.8542 2.1 56.9 -17.5 22.1647 5.4 ------ UNKNOWN
349.4782 62.1847 2.1 41.1 -88.0 34.2702 5.5 ------ UNKNOWN
Plot creation:
Tue Jun 21 07:27:18 EDT 2022