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
103.7818 -1.5083 0.0248 25.4 -72.3 1.4411 7.7 TRIG_01113743
------------------------------------------
Foreground time interval of the image:
-1.552 11.130 (delta_t = 12.682 [sec])
12.000 93.301 (delta_t = 81.301 [sec])
Background time interval of the image:
-239.000 -56.360 (delta_t = 182.640 [sec])
-55.000 -1.552 (delta_t = 53.448 [sec])
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
Multiple GTIs in the spectrum
tstart tstop
-1.552000 11.130000
12.000000 131.396000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.89389 ( -0.165801 0.174615 )
Norm@50keV : 1.12199E-03 ( -0.00015269 0.000156393 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 107.82 using 59 PHA bins.
# Reduced chi-squared = 1.8916 for 57 degrees of freedom
# Null hypothesis probability = 5.550205e-05
Photon flux (15-150 keV) in 132.1 sec: 0.285957 ( -0.0206841 0.0206858 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.6994e-06 ( -1.43618e-07 1.47136e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-1.552000 11.130000
12.000000 131.396000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.11709 ( -2.63667 1.43841 )
Epeak [keV] : 23.3687 ( -2.2754 1.75858 )
Norm@50keV : 3.88453 ( -7.70023 303.327 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.93 using 59 PHA bins.
# Reduced chi-squared = 1.195 for 56 degrees of freedom
# Null hypothesis probability = 1.503839e-01
Photon flux (15-150 keV) in 132.1 sec: 0.261385 ( -0.021005 0.021047 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.36186e-06 ( -1.11642e-07 1.1605e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-1.552000 11.130000
12.000000 131.396000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.49437 ( -1.57033 -2.49255 )
beta : -5.27746 ( 5.37387 1.3011 )
Epeak [keV] : 23.7045 ( -1.47993 1.42203 )
Norm@50keV : 7.11411 ( -7.32959 207.711 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.78 using 59 PHA bins.
# Reduced chi-squared = 1.196 for 55 degrees of freedom
# Null hypothesis probability = 1.514509e-01
Photon flux (15-150 keV) in 132.1 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] : 5.88724 (-0.365402 0.390745)
R^2/D10^2 : 1.15100 (-0.295381 0.40024)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.31 using 59 PHA bins.
# Reduced chi-squared = 1.181 for 57 degrees of freedom
# Null hypothesis probability = 1.649782e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.811e-07 7.166e-08
25- 50 6.515e-07 7.279e-08
50-150 5.516e-08 1.832e-08
15-150 1.388e-06 1.109e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 19.6040 (-2.53982 3.07187)
Norm : 3.56243 (-0.605237 0.746228)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.175e-07 6.697e-08
25- 50 6.186e-07 6.433e-08
50-150 1.791e-07 6.063e-08
15-150 1.515e-06 1.420e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.78450 (-0.365439 0.390706)
R1^2/D10^2 : 1.22803 (-0.295347 0.400273)
kT2 [keV] : 29.5625 (-28.2824 -28.2824)
R2^2/D10^2 : 1.49424E-04 (-0.000152605 1.47874)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 78.476 sec. to 79.476 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.69711 ( -0.761244 0.848767 )
Norm@50keV : 4.15670E-03 ( -0.00188395 0.00161846 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.84 using 59 PHA bins.
# Reduced chi-squared = 0.9446 for 57 degrees of freedom
# Null hypothesis probability = 5.942048e-01
Photon flux (15-150 keV) in 1 sec: 0.551499 ( -0.187981 0.187846 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.84893e-08 ( -1.64262e-08 1.74528e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 78.476 sec. to 79.476 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.70086 ( -0.81766 0.808432 )
Epeak [keV] : 1.00000E+04 ( -9999.99 -10000 )
Norm@50keV : 4.15586E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.85 using 59 PHA bins.
# Reduced chi-squared = 0.9616 for 56 degrees of freedom
# Null hypothesis probability = 5.567711e-01
Photon flux (15-150 keV) in 1 sec: 0.551932 ( -0.187516 0.187369 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.78514e-08 ( -1.58259e-08 1.81133e-08 ) ergs/cm2
Band function
Time interval is from 78.476 sec. to 79.476 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.32603 ( 1.32471 1.32471 )
beta : -1.69621 ( 1.69738 0.761563 )
Epeak [keV] : 24.4395 ( -25.4374 -25.4374 )
Norm@50keV : 9.79645E-03 ( -0.00974462 2443.3 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.84 using 59 PHA bins.
# Reduced chi-squared = 0.9790 for 55 degrees of freedom
# Null hypothesis probability = 5.188249e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.0399 (-9.6403 23.836)
R^2/D10^2 : 6.82104E-02 (-0.0663725 10.7037)
(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 7.217e-09 4.611e-09
25- 50 9.426e-09 6.345e-09
50-150 1.430e-09 1.386e-09
15-150 1.807e-08 1.122e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 198.849 (-165.21 -198.966)
Norm : 2.18815 (-0.754349 1.71869)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.450e-09 3.540e-09
25- 50 1.048e-08 6.685e-09
50-150 2.297e-08 1.436e-08
15-150 3.890e-08 2.461e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.66123 (-2.04702 2.51807)
R1^2/D10^2 : 4.22889 (-3.85139 70.1183)
kT2 [keV] : 42.4713 (-26.6151 -42.6848)
R2^2/D10^2 : 1.91938E-03 (-0.00176904 0.0113501)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.129e-09 5.085e-09
25- 50 7.181e-09 3.916e-09
50-150 3.059e-08 1.917e-08
15-150 4.590e-08 2.332e-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: 2.92226 ( -0.186503 0.198032 )
Norm@50keV : 1.11108E-03 ( -0.000173373 0.000178851 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 101.61 using 59 PHA bins.
# Reduced chi-squared = 1.7827 for 57 degrees of freedom
# Null hypothesis probability = 2.566065e-04
Photon flux (15-150 keV) in 93.98 sec: 0.288927 ( -0.0230937 0.0230942 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.21183e-06 ( -1.15278e-07 1.18872e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.97795 ( -3.3057 1.54301 )
Epeak [keV] : 23.1908 ( -2.2249 2.15839 )
Norm@50keV : 19.3146 ( -19.029 1192.95 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.38 using 59 PHA bins.
# Reduced chi-squared = 1.239 for 56 degrees of freedom
# Null hypothesis probability = 1.079963e-01
Photon flux (15-150 keV) in 93.98 sec: 0.265919 ( -0.023236 0.023249 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.67985e-07 ( -8.73591e-08 9.1311e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.27991 ( -3.04876 -3.87513 )
beta : -5.29256 ( 5.45778 1.48087 )
Epeak [keV] : 23.2384 ( -1.59907 1.36635 )
Norm@50keV : 32.6975 ( -32.707 219.386 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.17 using 59 PHA bins.
# Reduced chi-squared = 1.240 for 55 degrees of freedom
# Null hypothesis probability = 1.093030e-01
Photon flux (15-150 keV) in 93.98 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) = 5.70e-07
S(50-100 keV) = 3.07e-07
T90 vs. Hardness ratio plot
T90 = 113.81199991703 sec.
Hardness ratio (energy fluence ratio) = 0.538596
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.710169
Count Ratio (50-100 keV) / (15-25 keV) = 0.0859845
Mask shadow pattern
IMX = 1.441883822019237E-01, IMY = 4.515049016723787E-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 -56.360000
-55.000000 -1.552000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.4873 -40.5473 8.1 37.9 28.5 -1.1182 -1.4 1.9 Vela X-1
85.5310 -57.2536 2.4 32.8 92.1 5.0598 4.9 ------ UNKNOWN
155.0542 -40.0906 2.7 52.7 26.4 7.5270 4.3 ------ UNKNOWN
130.7863 -16.9498 4.9 35.3 -11.9 1.3668 2.4 ------ UNKNOWN
146.7006 -11.0274 2.5 51.9 -11.7 4.4989 4.5 ------ UNKNOWN
103.7679 -1.4925 2.0 25.4 -72.3 3.3851 5.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-1.552000 11.130000
12.000000 93.300600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5190 -40.4205 6.0 37.9 28.3 0.4516 1.9 8.1 Vela X-1
102.6541 -28.8330 2.6 8.8 21.9 0.5982 4.4 ------ UNKNOWN
121.6017 -21.6033 2.3 25.7 -7.9 0.7550 4.9 ------ UNKNOWN
103.7818 -1.5083 1.5 25.4 -72.3 1.4415 7.7 ------ UNKNOWN
65.0193 3.5312 3.0 39.9 -144.7 0.8958 3.8 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
241.100600 420.480000
421.000000 603.054700
661.000000 823.160000
824.000000 869.500600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1697 -60.7453 5.8 34.8 -157.6 1.9806 2.0 8.5 Cen X-3
186.3707 -62.7662 327.8 31.8 -171.0 0.0310 0.0 7.9 GX 301-2
184.8450 -34.0426 2.8 13.8 -105.2 2.8907 4.2 ------ UNKNOWN
181.0977 -28.7633 3.3 17.7 -87.4 2.8248 3.5 ------ UNKNOWN
160.8314 -54.2023 2.3 35.9 -143.5 5.0438 5.1 ------ UNKNOWN
156.2203 -22.6392 2.8 40.8 -91.8 14.1713 4.1 ------ UNKNOWN
140.0543 -46.1454 2.5 48.1 -129.2 14.9727 4.7 ------ UNKNOWN
Plot creation:
Thu Jun 30 13:28:25 EDT 2022