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
238.7816 -54.0655 0.0195 21.0 160.5 0.0274 9.9 TRIG_01053220
------------------------------------------
Foreground time interval of the image:
0.000 0.008 (delta_t = 0.008 [sec])
Background time interval of the image:
-239.792 -5.792 (delta_t = 234.000 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
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 0.008000
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 0.008000
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 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.44674 ( -0.296163 0.321524 )
Norm@50keV : 0.120187 ( -0.0304639 0.0299467 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 25.37 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.008 sec: 22.8612 ( -4.26811 4.26813 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.4836e-09 ( -1.96299e-09 1.99337e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.442226 ( -3.20576 1.62478 )
Epeak [keV] : 25.3696 ( -22.6551 6.92358 )
Norm@50keV : 2.79677 ( -2.9504 641.91 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 21.56 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.008 sec: 23.8084 ( -4.3895 4.4141 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.69424e-09 ( -1.7308e-09 1.8868e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.98057 ( -4.58872 -4.98057 )
beta : -3.18110 ( -0.995958 0.545255 )
Epeak [keV] : 23.0310 ( -3.58514 3.27419 )
Norm@50keV : 6.17177E+04 ( -10916.2 134376 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.008 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.66152e-09 ( -9.66144e-09 -1.91181e-09 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.90762 (-1.05752 1.28316)
R^2/D10^2 : 53.0882 (-28.2628 55.2676)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 23.26 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.210e-09 1.047e-09
25- 50 4.284e-09 1.232e-09
50-150 6.765e-10 3.656e-10
15-150 8.171e-09 2.142e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 31.5468 (-8.99197 14.6074)
Norm : 187.722 (-57.9936 78.977)
------------------------------------------------------------
#Fit statistic : Chi-Squared 22.08 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.133e-09 7.024e-10
25- 50 3.679e-09 9.500e-10
50-150 2.150e-09 1.048e-09
15-150 8.962e-09 2.274e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.82062 (-1.42668 1.35104)
R1^2/D10^2 : 95.1280 (-47.5613 88.6903)
kT2 [keV] : 20.4473 (-10.4984 132.656)
R2^2/D10^2 : 0.229813 (-0.222108 1.61504)
------------------------------------------------------------
#Fit statistic : Chi-Squared 18.37 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.422e-09 1.736e-09
25- 50 3.797e-09 1.946e-09
50-150 2.553e-09 1.663e-09
15-150 9.773e-09 4.138e-09
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.44674 ( -0.296163 0.321524 )
Norm@50keV : 0.120187 ( -0.0304639 0.0299467 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 25.37 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.008 sec: 22.8612 ( -4.26811 4.26813 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.4836e-09 ( -1.96299e-09 1.99337e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.442226 ( -3.20576 1.62478 )
Epeak [keV] : 25.3696 ( -22.4916 6.92157 )
Norm@50keV : 2.79677 ( -2.9504 641.91 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 21.56 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.008 sec: 23.8084 ( -4.3895 4.4141 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.69424e-09 ( -1.7308e-09 1.8868e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.008 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.98057 ( -4.58459 -4.98057 )
beta : -3.18110 ( -0.995958 0.545255 )
Epeak [keV] : 23.0310 ( -3.58514 3.27419 )
Norm@50keV : 6.17177E+04 ( -10916.2 134376 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.008 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.66152e-09 ( -9.66144e-09 -1.91181e-09 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.90762 (-1.05752 1.28316)
R^2/D10^2 : 53.0882 (-28.2628 55.2676)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 23.26 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.210e-09 1.003e-09
25- 50 4.284e-09 1.352e-09
50-150 6.765e-10 3.745e-10
15-150 8.171e-09 2.152e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 31.5468 (-8.99197 14.6074)
Norm : 187.722 (-57.9936 78.977)
------------------------------------------------------------
#Fit statistic : Chi-Squared 22.08 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.133e-09 7.144e-10
25- 50 3.679e-09 8.700e-10
50-150 2.150e-09 9.904e-10
15-150 8.962e-09 2.081e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.82062 (-1.42668 1.35104)
R1^2/D10^2 : 95.1280 (-47.5613 88.6886)
kT2 [keV] : 20.4473 (-10.4984 132.656)
R2^2/D10^2 : 0.229813 (-0.222108 1.48391)
------------------------------------------------------------
#Fit statistic : Chi-Squared 18.37 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.422e-09 1.807e-09
25- 50 3.797e-09 1.983e-09
50-150 2.553e-09 1.609e-09
15-150 9.773e-09 4.387e-09
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: 2.44674 ( -0.296163 0.321524 )
Norm@50keV : 0.120187 ( -0.0304639 0.0299467 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 25.37 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.008 sec: 22.8612 ( -4.26811 4.26813 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.4836e-09 ( -1.96299e-09 1.99337e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.442226 ( -3.20576 1.62478 )
Epeak [keV] : 25.3696 ( -23.5443 6.93215 )
Norm@50keV : 2.79677 ( -2.9504 641.91 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 21.56 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.00e+00 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.008 sec: 23.8084 ( -4.3895 4.4141 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.69424e-09 ( -1.7308e-09 1.8868e-09 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.98057 ( -4.58219 -4.98057 )
beta : -3.18110 ( -0.995958 0.545255 )
Epeak [keV] : 23.0310 ( -3.58514 3.27419 )
Norm@50keV : 6.17177E+04 ( -10916.2 134376 )
------------------------------------------------------------
Photon flux (15-150 keV) in 0.008 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 9.66152e-09 ( -9.66144e-09 -1.91181e-09 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.13e-09
S(50-100 keV) = 2.30e-09
T90 vs. Hardness ratio plot
T90 = 0.00799989700317383 sec.
Hardness ratio (energy fluence ratio) = 0.734824
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.748868
Count Ratio (50-100 keV) / (15-25 keV) = 0.184674
Mask shadow pattern
IMX = -3.617116157841450E-01, IMY = -1.282943263317289E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.008000
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:
-239.792000 -5.792000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3030 -60.8110 6.3 42.1 -139.4 1.1686 1.8 11.3 Cen X-3
186.6993 -62.7209 9.3 35.6 -146.7 0.5667 1.2 3.2 GX 301-2
244.9924 -15.6525 0.6 27.2 52.6 8.5414 19.1 1.1 Sco X-1
255.9910 -37.8258 0.8 25.4 109.0 6.4103 14.3 1.1 4U 1700-377
256.4081 -36.4664 6.0 25.8 106.0 0.8650 1.9 2.9 GX 349+2
262.8419 -24.7752 422.5 34.8 87.2 -0.0180 -0.0 9.3 GX 1+4
264.7444 -44.6153 5.4 31.8 123.5 -1.0567 -2.1 9.9 4U 1735-44
263.0064 -33.8446 2501.2 31.6 102.8 0.0020 0.0 1.0 GX 354-0
237.6375 -12.9446 2.8 25.7 35.8 1.4804 4.1 ------ UNKNOWN
262.6636 -80.7174 3.4 47.3 176.8 2.4869 3.4 ------ UNKNOWN
205.3778 -70.1901 2.4 36.0 -164.6 1.8680 4.8 ------ UNKNOWN
206.0962 19.4206 2.8 57.7 -15.8 5.2079 4.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.008000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.1670 -60.6155 7.0 42.2 -139.1 0.0087 1.6 4.4 Cen X-3
186.5987 -62.6755 6.0 35.6 -146.6 -0.0070 -1.9 5.9 GX 301-2
244.8202 -15.6310 4.7 27.1 52.3 0.0082 2.4 9.2 Sco X-1
255.9920 -37.6899 19.1 25.4 108.7 0.0020 0.6 9.3 4U 1700-377
256.6561 -36.4632 6.7 26.0 106.1 0.0059 1.7 10.9 GX 349+2
263.0087 -24.6110 4.6 35.0 87.1 -0.0144 -2.5 8.1 GX 1+4
264.6542 -44.3796 7.5 31.8 123.1 -0.0068 -1.5 5.7 4U 1735-44
263.0576 -33.8488 5.2 31.7 102.8 0.0095 2.2 3.5 GX 354-0
238.7817 -54.0655 1.2 21.0 160.5 0.0274 9.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
78.508590 180.609900
181.208000 181.940500
182.208000 182.235900
183.208000 183.664200
185.208000 185.832700
187.208000 187.761800
189.208000 189.659500
191.208000 191.372900
192.208000 242.338000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2464 -60.6275 7.4 35.8 -60.6 -0.4735 -1.5 2.1 Cen X-3
186.6899 -62.8225 4.4 27.7 -61.2 -0.5520 -2.6 3.3 GX 301-2
245.0780 -15.5227 5.4 38.8 77.9 -1.2043 -2.1 9.1 Sco X-1
256.0774 -37.8889 5.3 20.0 111.4 0.4302 2.2 5.1 4U 1700-377
256.2885 -36.2499 0.0 21.5 109.6 -0.3252 -1.5 12.6 GX 349+2
262.9807 -24.8907 9.8 34.3 109.5 0.4497 1.2 8.8 GX 1+4
264.9102 -44.3120 7.7 19.5 138.9 -0.3432 -1.5 11.0 4U 1735-44
270.4177 -24.9998 38.3 37.3 119.8 -0.1336 -0.3 8.7 GX 5-1
270.2764 -25.5968 8.2 36.8 120.1 0.5980 1.4 8.9 GRS 1758-258
275.7557 -30.3158 9.1 35.6 131.4 -0.4692 -1.3 9.3 H1820-303
284.9960 -24.8759 15.0 44.9 136.4 0.6522 0.8 3.4 HT1900.1-2455
262.9894 -33.6869 6.0 26.6 117.9 -0.4870 -1.9 8.9 GX 354-0
236.2887 -13.0577 3.1 41.0 64.5 2.1235 3.7 ------ UNKNOWN
224.0417 -9.0565 3.0 46.5 47.9 2.7978 3.9 ------ UNKNOWN
223.7525 -21.9914 2.1 34.0 42.7 1.5954 5.6 ------ UNKNOWN
251.0548 -49.6916 2.5 8.7 133.3 0.7030 4.6 ------ UNKNOWN
169.3182 -43.0145 2.2 45.3 -37.6 1.9054 5.2 ------ UNKNOWN
Plot creation:
Thu Jun 3 14:06:22 EDT 2021