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
236.7629 -47.6522 0.0288 15.2 167.4 6.1029 6.6 TRIG_01055000
------------------------------------------
Foreground time interval of the image:
0.000 71.180 (delta_t = 71.180 [sec])
72.000 89.010 (delta_t = 17.010 [sec])
90.000 137.930 (delta_t = 47.930 [sec])
139.000 161.400 (delta_t = 22.400 [sec])
162.000 166.840 (delta_t = 4.840 [sec])
168.000 173.130 (delta_t = 5.130 [sec])
174.000 452.060 (delta_t = 278.060 [sec])
453.000 522.720 (delta_t = 69.720 [sec])
524.000 527.920 (delta_t = 3.920 [sec])
529.000 538.460 (delta_t = 9.460 [sec])
540.000 963.047 (delta_t = 423.047 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 71.180000
72.000000 89.010000
90.000000 137.930000
139.000000 161.400000
162.000000 166.840000
168.000000 173.130000
174.000000 452.060000
453.000000 522.720000
524.000000 527.920000
529.000000 538.460000
540.000000 963.047000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.66963 ( -0.208315 0.224017 )
Norm@50keV : 2.91874E-04 ( -4.71722e-05 4.73699e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.00 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.68e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 952.7 sec: 6.38507E-02 ( -0.00569739 0.00569844 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.92744e-06 ( -3.14444e-07 3.24213e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 71.180000
72.000000 89.010000
90.000000 137.930000
139.000000 161.400000
162.000000 166.840000
168.000000 173.130000
174.000000 452.060000
453.000000 522.720000
524.000000 527.920000
529.000000 538.460000
540.000000 963.047000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.96184 ( -1.19744 0.0293543 )
Epeak [keV] : 1.78098 ( -1.0164 19.781 )
Norm@50keV : 8.51924E-04 ( -0.00019135 0.00020457 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.90 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.70e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 952.7 sec: 6.24205E-02 ( -0.0060508 0.0060957 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72982e-06 ( -3.75926e-07 4.4111e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 71.180000
72.000000 89.010000
90.000000 137.930000
139.000000 161.400000
162.000000 166.840000
168.000000 173.130000
174.000000 452.060000
453.000000 522.720000
524.000000 527.920000
529.000000 538.460000
540.000000 963.047000
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.572586 ( 0.548609 0.548609 )
beta : -2.95549 ( 2.95716 0.38017 )
Epeak [keV] : 18.1510 ( -18.3617 5.34654 )
Norm@50keV : 9.78464E-03 ( -0.0113834 145.129 )
------------------------------------------------------------
Photon flux (15-150 keV) in 952.7 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] : 6.39285 (-0.623992 0.694632)
R^2/D10^2 : 0.170126 (-0.0619266 0.0988652)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 73.04 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.47e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.588e-07 1.476e-07
25- 50 1.094e-06 1.571e-07
50-150 1.291e-07 4.700e-08
15-150 2.182e-06 2.510e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.6004 (-4.98359 6.63808)
Norm : 0.582115 (-0.12102 0.162135)
------------------------------------------------------------
#Fit statistic : Chi-Squared 59.78 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.75e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.031e-06 1.219e-07
25- 50 1.073e-06 1.239e-07
50-150 4.723e-07 1.650e-07
15-150 2.576e-06 3.115e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.89949 (-1.12758 0.994131)
R1^2/D10^2 : 0.451838 (-0.233993 0.808892)
kT2 [keV] : 15.7043 (-5.79607 15.541)
R2^2/D10^2 : 1.95914E-03 (-0.00181738 0.00725491)
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.75e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.060e-06 3.590e-07
25- 50 9.946e-07 3.628e-07
50-150 6.992e-07 3.933e-07
15-150 2.754e-06 1.001e-06
Peak spectrum fit
Power-law model
Time interval is from 540.000 sec. to 963.047 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.66963 ( -0.208315 0.224017 )
Norm@50keV : 2.91874E-04 ( -4.71722e-05 4.73699e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.00 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.68e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 952.7 sec: 6.38507E-02 ( -0.00569739 0.00569844 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.92744e-06 ( -3.14444e-07 3.24213e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 540.000 sec. to 963.047 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.96184 ( -1.19744 0.0293543 )
Epeak [keV] : 1.78098 ( -1.0164 19.781 )
Norm@50keV : 8.51924E-04 ( -0.00019135 0.00020457 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.90 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.70e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 952.7 sec: 6.24205E-02 ( -0.0060508 0.0060957 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72982e-06 ( -3.75926e-07 4.4111e-07 ) ergs/cm2
Band function
Time interval is from 540.000 sec. to 963.047 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.572586 ( 0.548609 0.548609 )
beta : -2.95549 ( 2.95716 0.38017 )
Epeak [keV] : 18.1510 ( -18.3617 5.34654 )
Norm@50keV : 9.78464E-03 ( -0.0113834 145.123 )
------------------------------------------------------------
Photon flux (15-150 keV) in 952.7 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] : 6.39285 (-0.623992 0.694632)
R^2/D10^2 : 0.170126 (-0.0619266 0.0988652)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 73.04 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.47e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.588e-07 1.422e-07
25- 50 1.094e-06 1.428e-07
50-150 1.291e-07 4.665e-08
15-150 2.182e-06 2.663e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.6004 (-4.98359 6.63808)
Norm : 0.582115 (-0.12102 0.162135)
------------------------------------------------------------
#Fit statistic : Chi-Squared 59.78 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.75e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.031e-06 1.225e-07
25- 50 1.073e-06 1.378e-07
50-150 4.723e-07 1.666e-07
15-150 2.576e-06 3.211e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.89949 (-1.12758 0.994131)
R1^2/D10^2 : 0.451838 (-0.233993 0.808892)
kT2 [keV] : 15.7043 (-5.79607 15.541)
R2^2/D10^2 : 1.95914E-03 (-0.00181738 0.00725491)
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.75e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.060e-06 3.590e-07
25- 50 9.946e-07 3.750e-07
50-150 6.992e-07 4.007e-07
15-150 2.754e-06 8.965e-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: 2.66963 ( -0.208315 0.224017 )
Norm@50keV : 2.91874E-04 ( -4.71722e-05 4.73699e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.00 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.68e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 952.7 sec: 6.38507E-02 ( -0.00569739 0.00569844 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.92744e-06 ( -3.14444e-07 3.24213e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.96184 ( -1.19744 0.0293543 )
Epeak [keV] : 1.78098 ( -1.0164 19.781 )
Norm@50keV : 8.51924E-04 ( -0.00019135 0.00020457 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.90 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.70e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 952.7 sec: 6.24205E-02 ( -0.0060508 0.0060957 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72982e-06 ( -3.75926e-07 4.4111e-07 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.572586 ( 0.548609 0.548609 )
beta : -2.95549 ( 2.95716 0.38017 )
Epeak [keV] : 18.1510 ( -18.3617 5.34654 )
Norm@50keV : 9.78464E-03 ( -0.0113834 145.121 )
------------------------------------------------------------
Photon flux (15-150 keV) in 952.7 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) = 9.82e-07
S(50-100 keV) = 6.18e-07
T90 vs. Hardness ratio plot
T90 = 1144 sec.
Hardness ratio (energy fluence ratio) = 0.629328
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.686536
Count Ratio (50-100 keV) / (15-25 keV) = 0.181752
Mask shadow pattern
IMX = -2.648459848225411E-01, IMY = -5.928443980538758E-02
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 71.180000
72.000000 89.010000
90.000000 137.930000
139.000000 161.400000
162.000000 166.840000
168.000000 173.130000
174.000000 452.060000
453.000000 522.720000
524.000000 527.920000
529.000000 538.460000
540.000000 963.047000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2844 -60.6212 63.7 42.1 -122.6 0.4373 0.2 0.9 Cen X-3
186.6785 -62.7700 0.8 35.7 -130.3 21.9509 13.7 0.6 GX 301-2
244.9925 -15.6392 0.5 27.2 69.2 27.0709 22.6 0.8 Sco X-1
256.2305 -37.8558 0.0 25.6 125.7 1.9082 1.5 11.6 4U 1700-377
256.5258 -36.5003 5.7 26.0 122.7 2.6533 2.0 6.4 GX 349+2
262.8992 -24.8463 8.6 34.8 103.9 2.1265 1.3 8.5 GX 1+4
264.8773 -44.5568 6.2 32.0 140.0 2.3257 1.9 8.6 4U 1735-44
270.2043 -24.9809 4.2 40.7 109.0 7.4082 2.7 7.3 GX 5-1
270.4938 -25.7181 0.0 40.6 110.2 7.5426 2.8 10.4 GRS 1758-258
263.0034 -33.6231 0.0 31.7 119.0 -0.1650 -0.1 12.7 GX 354-0
236.7629 -47.6521 1.7 15.2 167.4 6.1024 6.6 ------ UNKNOWN
156.4914 -72.6532 3.5 49.7 -137.6 10.7879 3.2 ------ UNKNOWN
176.4590 -21.9905 3.7 43.6 -64.1 13.0121 3.2 ------ UNKNOWN
176.8119 -19.0529 3.8 44.8 -60.2 12.5254 3.1 ------ UNKNOWN
158.8664 -66.0080 2.6 48.0 -129.0 17.2558 4.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Sun Jun 13 18:28:35 EDT 2021