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
299.9302 +35.1264 0.0084 11.4 167.4 2.7962 23.0 TRIG_01217222
------------------------------------------
Foreground time interval of the image:
0.000 9.790 (delta_t = 9.790 [sec])
11.000 13.090 (delta_t = 2.090 [sec])
14.000 18.830 (delta_t = 4.830 [sec])
20.000 64.000 (delta_t = 44.000 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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 64.000000
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 64.000000
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
Multiple GTIs in the spectrum
tstart tstop
0.000000 9.790000
11.000000 13.090000
14.000000 18.830000
20.000000 64.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.82113 ( -0.100649 0.102178 )
Norm@50keV : 2.67965E-03 ( -0.000165676 0.000164236 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.01 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 57 degrees of freedom
# Null hypothesis probability = 2.179561e-01
Photon flux (15-150 keV) in 60.71 sec: 0.372319 ( -0.0207557 0.020776 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.49668e-06 ( -9.35972e-08 9.43907e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 9.790000
11.000000 13.090000
14.000000 18.830000
20.000000 64.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42004 ( -0.436851 0.389379 )
Epeak [keV] : 63.9551 ( -14.9725 297.093 )
Norm@50keV : 4.46439E-03 ( -0.00170637 0.00327482 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.89 using 59 PHA bins.
# Reduced chi-squared = 1.105 for 56 degrees of freedom
# Null hypothesis probability = 2.740625e-01
Photon flux (15-150 keV) in 60.71 sec: 0.364927 ( -0.021918 0.021906 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.43382e-06 ( -1.11372e-07 1.11876e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 9.790000
11.000000 13.090000
14.000000 18.830000
20.000000 64.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.42689 ( -0.319935 0.302582 )
beta : -9.36583 ( 9.3714 19.3714 )
Epeak [keV] : 64.4158 ( -14.748 37.594 )
Norm@50keV : 4.42215E-03 ( -0.00170599 0.000582127 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.89 using 59 PHA bins.
# Reduced chi-squared = 1.125 for 55 degrees of freedom
# Null hypothesis probability = 2.437481e-01
Photon flux (15-150 keV) in 60.71 sec: 0.364988 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.43477e-06 ( -1.43434e-06 -1.00845e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.9433 ( )
R^2/D10^2 : 0.122405 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 126.91 using 59 PHA bins.
# Reduced chi-squared = 2.2265 for 57 degrees of freedom
# Null hypothesis probability = 3.083460e-07
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.857e-07 1.855e-08
25- 50 5.217e-07 3.124e-08
50-150 3.515e-07 4.748e-08
15-150 1.059e-06 6.648e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 94.2925 (-17.784 25.3048)
Norm : 1.66005 (-0.134234 0.151236)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.633e-07 2.677e-08
25- 50 4.497e-07 2.823e-08
50-150 7.044e-07 2.209e-07
15-150 1.417e-06 2.234e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.25999 (-0.936291 0.961831)
R1^2/D10^2 : 0.438164 (-0.14545 0.246921)
kT2 [keV] : 27.9112 (-6.13111 10.7504)
R2^2/D10^2 : 2.54463E-03 (-0.00164399 0.00368509)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.532e-07 5.078e-08
25- 50 4.605e-07 7.221e-08
50-150 7.279e-07 3.487e-07
15-150 1.442e-06 4.225e-07
Peak spectrum fit
Power-law model
Time interval is from 20.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.82113 ( -0.100649 0.102178 )
Norm@50keV : 2.67965E-03 ( -0.000165676 0.000164236 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.01 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 57 degrees of freedom
# Null hypothesis probability = 2.179561e-01
Photon flux (15-150 keV) in 60.71 sec: 0.372319 ( -0.0207557 0.020776 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.49668e-06 ( -9.35972e-08 9.43907e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 20.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42004 ( -0.436851 0.389379 )
Epeak [keV] : 63.9551 ( -14.9725 297.093 )
Norm@50keV : 4.46439E-03 ( -0.00170637 0.00327482 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.89 using 59 PHA bins.
# Reduced chi-squared = 1.105 for 56 degrees of freedom
# Null hypothesis probability = 2.740625e-01
Photon flux (15-150 keV) in 60.71 sec: 0.364927 ( -0.021918 0.021906 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.43382e-06 ( -1.11372e-07 1.11876e-07 ) ergs/cm2
Band function
Time interval is from 20.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.42689 ( -0.319938 0.302582 )
beta : -9.36583 ( 9.3714 19.3714 )
Epeak [keV] : 64.4158 ( -14.748 44.6448 )
Norm@50keV : 4.42215E-03 ( -0.00170599 0.000582127 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.89 using 59 PHA bins.
# Reduced chi-squared = 1.125 for 55 degrees of freedom
# Null hypothesis probability = 2.437481e-01
Photon flux (15-150 keV) in 60.71 sec: 0.364988 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.43477e-06 ( -1.43434e-06 -1.00845e-07 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.9433 ( )
R^2/D10^2 : 0.122405 ( )
(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 1.857e-07 1.824e-08
25- 50 5.217e-07 3.172e-08
50-150 3.515e-07 4.908e-08
15-150 1.059e-06 7.224e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 94.2925 (-17.784 25.3048)
Norm : 1.66005 (-0.134234 0.151236)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.633e-07 2.547e-08
25- 50 4.497e-07 2.750e-08
50-150 7.044e-07 2.102e-07
15-150 1.417e-06 2.289e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.25999 (-0.936291 0.961831)
R1^2/D10^2 : 0.438164 (-0.14545 0.246921)
kT2 [keV] : 27.9112 (-6.13111 10.7504)
R2^2/D10^2 : 2.54463E-03 (-0.00164399 0.00368509)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.532e-07 4.675e-08
25- 50 4.605e-07 7.598e-08
50-150 7.279e-07 3.546e-07
15-150 1.442e-06 4.065e-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: 1.82113 ( -0.100649 0.102178 )
Norm@50keV : 2.67965E-03 ( -0.000165676 0.000164236 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.01 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 57 degrees of freedom
# Null hypothesis probability = 2.179561e-01
Photon flux (15-150 keV) in 60.71 sec: 0.372319 ( -0.0207557 0.020776 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.49668e-06 ( -9.35972e-08 9.43907e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42004 ( -0.436851 0.389379 )
Epeak [keV] : 63.9551 ( -14.9725 297.093 )
Norm@50keV : 4.46439E-03 ( -0.00170637 0.00327482 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.89 using 59 PHA bins.
# Reduced chi-squared = 1.105 for 56 degrees of freedom
# Null hypothesis probability = 2.740625e-01
Photon flux (15-150 keV) in 60.71 sec: 0.364927 ( -0.021918 0.021906 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.43382e-06 ( -1.11372e-07 1.11876e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.42689 ( -0.319935 0.302582 )
beta : -9.36583 ( 9.3714 19.3714 )
Epeak [keV] : 64.4158 ( -14.748 43.2236 )
Norm@50keV : 4.42215E-03 ( -0.00170599 0.000582127 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.89 using 59 PHA bins.
# Reduced chi-squared = 1.125 for 55 degrees of freedom
# Null hypothesis probability = 2.437481e-01
Photon flux (15-150 keV) in 60.71 sec: 0.364988 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.43477e-06 ( -1.43434e-06 -1.00845e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 4.25e-07
S(50-100 keV) = 4.81e-07
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 1.13176
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.18993
Count Ratio (50-100 keV) / (15-25 keV) = 0.611754
Mask shadow pattern
IMX = -1.958820530611333E-01, IMY = -4.389576552169522E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 9.790000
11.000000 13.090000
14.000000 18.830000
20.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3244 35.5120 0.0 35.6 78.9 0.5918 2.0 12.1 Her X-1
268.3726 -1.4753 32.6 36.3 9.2 0.0602 0.4 1.4 SW J1753.5-0127
270.3195 -24.9234 0.0 54.9 -11.4 0.7410 1.9 9.5 GX 5-1
270.3108 -25.7469 8.8 55.7 -11.8 0.5704 1.3 0.5 GRS 1758-258
273.9217 -14.0659 4.9 43.7 -8.9 0.4676 2.4 5.2 GX 17+2
275.8582 -30.3594 7.4 58.0 -19.3 -1.0155 -1.5 3.5 H1820-303
285.0873 -25.0239 2.6 50.7 -27.3 1.4965 4.4 6.8 HT1900.1-2455
288.9736 10.9327 21.1 14.8 -18.0 0.0616 0.5 10.4 GRS 1915+105
299.8318 35.2044 0.6 11.4 166.8 2.2507 18.4 11.8 Cyg X-1
308.1574 40.9588 70.5 19.8 175.0 0.0203 0.2 2.2 Cyg X-3
326.2040 38.1750 5.6 30.2 -161.6 0.2990 2.0 8.9 Cyg X-2
Post-slew image of 15-350 keV band
Time interval of the image:
114.000600 243.027100
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2764 35.3337 19.5 37.0 60.1 -0.2985 -0.6 8.9 Her X-1
268.3775 -1.3471 4.0 46.9 1.9 1.1118 2.9 6.4 SW J1753.5-0127
273.9822 -14.0362 5.1 55.0 -12.6 -1.5111 -2.2 1.4 GX 17+2
288.8004 10.9488 278.8 26.2 -18.4 -0.0096 -0.0 0.2 GRS 1915+105
299.8169 35.1782 0.5 0.1 86.5 4.8693 23.0 11.2 Cyg X-1
308.0897 40.7422 0.0 8.6 -177.5 0.3732 1.9 12.7 Cyg X-3
326.3401 38.2510 77.3 21.3 -150.1 0.0331 0.1 9.0 Cyg X-2
250.7935 16.2847 2.4 47.5 35.9 3.1741 4.9 ------ UNKNOWN
307.5325 21.2778 2.3 15.4 -71.6 1.1536 5.0 ------ UNKNOWN
18.2415 44.7051 2.3 58.5 -169.1 5.6341 4.9 ------ UNKNOWN
289.8780 -19.2600 2.1 55.2 -32.3 6.9024 5.4 ------ UNKNOWN
Plot creation:
Sun Feb 25 18:46:27 EST 2024