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
84.1178 +22.1360 0.0103 30.4 -143.3 3.1244 18.7 TRIG_01209644
------------------------------------------
Foreground time interval of the image:
-14.699 32.000 (delta_t = 46.699 [sec])
42.000 60.950 (delta_t = 18.950 [sec])
61.000 72.230 (delta_t = 11.230 [sec])
73.000 73.838 (delta_t = 0.838 [sec])
82.000 88.201 (delta_t = 6.201 [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 80.000000
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 80.000000
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 80.000000
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
-135.576000 -135.420000
-126.000000 -116.827700
-116.000000 -113.940000
-113.000000 -107.870000
-107.000000 -105.670000
-59.000000 -53.113500
-52.000000 32.000000
42.000000 60.950000
61.000300 72.230000
73.000000 73.838300
82.000000 120.390000
126.000000 127.278100
128.000000 162.860000
171.000000 173.150000
174.000000 195.140000
207.000000 241.710000
243.000000 243.126200
301.000000 316.360000
326.000000 344.840000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.17204 ( -0.0628551 0.0635793 )
Norm@50keV : 2.12536E-03 ( -6.95243e-05 6.91246e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.74 using 59 PHA bins.
# Reduced chi-squared = 0.9604 for 57 degrees of freedom
# Null hypothesis probability = 5.601898e-01
Photon flux (15-150 keV) in 649.1 sec: 0.346770 ( -0.0116892 0.0117688 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.29222e-05 ( -3.84e-07 3.84837e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-135.576000 -135.420000
-126.000000 -116.827700
-116.000000 -113.940000
-113.000000 -107.870000
-107.000000 -105.670000
-59.000000 -53.113500
-52.000000 32.000000
42.000000 60.950000
61.000300 72.230000
73.000000 73.838300
82.000000 120.390000
126.000000 127.278100
128.000000 162.860000
171.000000 173.150000
174.000000 195.140000
207.000000 241.710000
243.000000 243.126200
301.000000 316.360000
326.000000 344.840000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.99470 ( -0.117608 -1.9947 )
Epeak [keV] : 1.52680 ( -0.438054 0.952199 )
Norm@50keV : 2.58667E-03 ( -8.17015e-05 0.000165795 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.91 using 59 PHA bins.
# Reduced chi-squared = 1.016 for 56 degrees of freedom
# Null hypothesis probability = 4.410672e-01
Photon flux (15-150 keV) in 649.1 sec: 0.346893 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.29203e-05 ( -4.12373e-07 3.76153e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-135.576000 -135.420000
-126.000000 -116.827700
-116.000000 -113.940000
-113.000000 -107.870000
-107.000000 -105.670000
-59.000000 -53.113500
-52.000000 32.000000
42.000000 60.950000
61.000300 72.230000
73.000000 73.838300
82.000000 120.390000
126.000000 127.278100
128.000000 162.860000
171.000000 173.150000
174.000000 195.140000
207.000000 241.710000
243.000000 243.126200
301.000000 316.360000
326.000000 344.840000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.75728 ( 1.58961 1.58961 )
beta : -2.20619 ( -0.200931 0.0856434 )
Epeak [keV] : 19.2968 ( -21.2736 8.79693 )
Norm@50keV : 3.88963E-03 ( -0.0010456 1316.71 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.11 using 59 PHA bins.
# Reduced chi-squared = 0.9838 for 55 degrees of freedom
# Null hypothesis probability = 5.085663e-01
Photon flux (15-150 keV) in 649.1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.24382e-05 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.6437 ( )
R^2/D10^2 : 0.110771 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 332.38 using 59 PHA bins.
# Reduced chi-squared = 5.8312 for 57 degrees of freedom
# Null hypothesis probability = 1.623122e-40
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.690e-06 9.996e-08
25- 50 4.576e-06 1.516e-07
50-150 2.853e-06 1.928e-07
15-150 9.119e-06 2.726e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 60.7886 (-5.36071 6.17158)
Norm : 1.69823 (-0.102852 0.111179)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.776e-06 1.405e-07
25- 50 4.242e-06 1.314e-07
50-150 4.879e-06 3.184e-07
15-150 1.190e-05 3.473e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.74372 (-0.609211 0.607737)
R1^2/D10^2 : 0.548718 (-0.149934 0.23988)
kT2 [keV] : 25.5150 (-3.78821 5.25463)
R2^2/D10^2 : 2.53909E-03 (-0.00122226 0.00216199)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.684e-06 2.210e-07
25- 50 4.237e-06 2.295e-07
50-150 5.545e-06 7.585e-07
15-150 1.247e-05 8.828e-07
Peak spectrum fit
Power-law model
Time interval is from -124.752 sec. to -123.752 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.93896 ( -0.618215 0.721227 )
Norm@50keV : 3.71353E-03 ( -0.00188072 0.0018265 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.32 using 59 PHA bins.
# Reduced chi-squared = 1.041 for 57 degrees of freedom
# Null hypothesis probability = 3.911286e-01
Photon flux (15-150 keV) in 1 sec: 0.542143 ( -0.25177 0.252868 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41433e-08 ( -1.6466e-08 1.68726e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -124.752 sec. to -123.752 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.395021 ( -8.52549 2.65712 )
Epeak [keV] : 42.1764 ( -17.2366 -41.7193 )
Norm@50keV : 8.97820E-02 ( -0.112486 -0.112486 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.026 for 56 degrees of freedom
# Null hypothesis probability = 4.219570e-01
Photon flux (15-150 keV) in 1 sec: 0.552770 ( -0.246488 0.252314 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.14444e-08 ( -1.6765e-08 1.84754e-08 ) ergs/cm2
Band function
Time interval is from -124.752 sec. to -123.752 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -6.90448 -5 )
beta : -2.59244 ( 2.593 0.920072 )
Epeak [keV] : 28.0563 ( -13.973 13.3071 )
Norm@50keV : 350.131 ( -145.514 9284.49 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.40 using 59 PHA bins.
# Reduced chi-squared = 1.026 for 55 degrees of freedom
# Null hypothesis probability = 4.221823e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41833e-08 ( -3.41763e-08 -1.66738e-08 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.2108 (-3.89137 6.26409)
R^2/D10^2 : 0.274729 (-0.274729 1.40896)
(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 5.873e-09 3.869e-09
25- 50 1.503e-08 9.625e-09
50-150 8.333e-09 6.460e-09
15-150 2.924e-08 1.859e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 69.7030 (-44.0719 -69.703)
Norm : 2.86994 (-1.46366 2.58444)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.360e-09 4.902e-09
25- 50 1.170e-08 7.655e-09
50-150 1.498e-08 1.347e-08
15-150 3.403e-08 2.427e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.49558 (-7.49443 -7.49443)
R1^2/D10^2 : 0.615270 (-0.615745 -0.615745)
kT2 [keV] : 18.0589 (-18.0558 -18.0558)
R2^2/D10^2 : 1.50555E-02 (-0.0150731 1.40962)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.912e-09 5.110e-09
25- 50 1.379e-08 1.290e-08
50-150 1.273e-08 9.810e-09
15-150 3.344e-08 2.635e-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: 2.05846 ( -0.127618 0.131527 )
Norm@50keV : 2.15643E-03 ( -0.000176059 0.000173295 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.80 using 59 PHA bins.
# Reduced chi-squared = 1.277 for 57 degrees of freedom
# Null hypothesis probability = 7.743072e-02
Photon flux (15-150 keV) in 83.92 sec: 0.332474 ( -0.0221894 0.0222154 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.67527e-06 ( -1.25637e-07 1.26967e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.96584 ( -0.536988 0.262461 )
Epeak [keV] : 16.0000 ( -12.7491 -13.7046 )
Norm@50keV : 2.43161E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.76 using 59 PHA bins.
# Reduced chi-squared = 1.299 for 56 degrees of freedom
# Null hypothesis probability = 6.546567e-02
Photon flux (15-150 keV) in 83.92 sec: 0.331448 ( -0.023619 0.023099 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.66477e-06 ( -1.57535e-07 1.35514e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.38877 ( 1.3886 1.3886 )
beta : -2.23983 ( 2.24288 0.269553 )
Epeak [keV] : 32.4757 ( -32.5337 17.0533 )
Norm@50keV : 5.62837E-03 ( -0.00277728 693.523 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.22 using 59 PHA bins.
# Reduced chi-squared = 1.295 for 55 degrees of freedom
# Null hypothesis probability = 6.968263e-02
Photon flux (15-150 keV) in 83.92 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) = 4.07e-06
S(50-100 keV) = 3.61e-06
T90 vs. Hardness ratio plot
T90 = 688.463999986649 sec.
Hardness ratio (energy fluence ratio) = 0.886978
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.931772
Count Ratio (50-100 keV) / (15-25 keV) = 0.435891
Mask shadow pattern
IMX = -4.706624475460036E-01, IMY = 3.502518848078882E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 80.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 80.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 80.000000
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:
-14.699400 0.724000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6387 21.9457 5.1 30.9 -143.2 -0.1310 -2.3 4.1 Crab
138.6773 29.0903 2.2 20.0 60.9 0.2953 5.2 ------ UNKNOWN
195.0772 67.7788 2.7 54.5 -10.9 0.7013 4.3 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-14.699400 32.000000
42.000000 60.950000
61.000300 72.230000
73.000000 73.838300
82.000000 88.200600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.4514 21.9390 0.0 31.0 -143.1 0.1707 1.0 11.1 Crab
138.7295 29.0892 2.5 20.1 60.9 0.7872 4.6 ------ UNKNOWN
84.1177 22.1359 0.6 30.4 -143.3 3.1352 18.8 ------ UNKNOWN
75.3213 -4.4658 2.6 54.5 -165.2 2.0261 4.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
171.000000 173.150000
174.000000 195.140000
207.000000 241.710000
243.000000 243.126200
301.000000 316.360000
326.000000 344.840000
348.000000 350.150000
351.000000 447.200600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.7906 22.0726 2.6 0.3 -93.2 1.3982 4.5 9.4 Crab
95.5742 -23.7826 3.5 47.2 170.0 2.9295 3.3 ------ UNKNOWN
40.2396 19.6307 2.4 40.9 -80.8 5.2392 4.8 ------ UNKNOWN
50.5076 -12.8028 2.6 48.0 -129.1 6.3088 4.5 ------ UNKNOWN
Plot creation:
Sat Jan 20 00:45:30 EST 2024