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
287.0099 +29.8122 0.0582 46.6 -8.3 0.0182 3.3 TRIG_01078701
------------------------------------------
Foreground time interval of the image:
0.000 0.064 (delta_t = 0.064 [sec])
Background time interval of the image:
-60.904 -7.904 (delta_t = 53.000 [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 0.064000
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 0.064000
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 0.064000
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 0.064 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.03198 ( -0.903677 1.37517 )
Norm@50keV : 4.04707E-03 ( -0.00400158 0.00416588 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.75 using 59 PHA bins.
# Reduced chi-squared = 0.9780 for 57 degrees of freedom
# Null hypothesis probability = 5.221094e-01
Photon flux (15-150 keV) in 0.064 sec: 2.58240 ( -1.28313 1.28089 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.74659e-09 ( -3.07277e-09 3.08012e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 5.04931E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.26 using 59 PHA bins.
# Reduced chi-squared = 1.183 for 56 degrees of freedom
# Null hypothesis probability = 1.639724e-01
Photon flux (15-150 keV) in 0.064 sec: 3.53415 3.55136 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.32786e-14 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.064 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.32162 ( 1.24546 1.24546 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 17.3270 ( -3.4072 4.11025 )
Norm@50keV : 2.10669E+04 ( -20902.7 97003 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.98 using 59 PHA bins.
# Reduced chi-squared = 0.9087 for 55 degrees of freedom
# Null hypothesis probability = 6.664903e-01
Photon flux (15-150 keV) in 0.064 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] : 3.88196 (-0.995464 1.27619)
R^2/D10^2 : 101.495 (-100.662 389.692)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.16 using 59 PHA bins.
# Reduced chi-squared = 0.8975 for 57 degrees of freedom
# Null hypothesis probability = 6.928180e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.100e-09 3.222e-09
25- 50 1.689e-09 1.235e-09
50-150 1.709e-11 2.325e-11
15-150 6.806e-09 4.272e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.29400 (-3.77125 7.49352)
Norm : 120.651 (-122.171 344.891)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.543e-09 2.942e-09
25- 50 1.768e-09 1.234e-09
50-150 9.875e-11 1.132e-10
15-150 6.410e-09 4.230e-09
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.89746 (-0.98819 1.28281)
R1^2/D10^2 : 99.5149 (-99.8692 390.752)
kT2 [keV] : 4.15335E-02 (-0.0415335 -0.0415335)
R2^2/D10^2 : 7.00358E-02 (-0.0700403 -0.0700403)
------------------------------------------------------------
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 0.000 sec. to 0.064 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.03198 ( -0.903677 1.37517 )
Norm@50keV : 4.04707E-03 ( -0.00400158 0.00416588 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.75 using 59 PHA bins.
# Reduced chi-squared = 0.9780 for 57 degrees of freedom
# Null hypothesis probability = 5.221094e-01
Photon flux (15-150 keV) in 0.064 sec: 2.58240 ( -1.28313 1.28089 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.74659e-09 ( -3.07277e-09 3.08012e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.064 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 5.04931E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.26 using 59 PHA bins.
# Reduced chi-squared = 1.183 for 56 degrees of freedom
# Null hypothesis probability = 1.639724e-01
Photon flux (15-150 keV) in 0.064 sec: 3.53415 3.55136 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.32786e-14 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.064 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.32162 ( 1.24546 1.24546 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 17.3270 ( -3.4072 4.11025 )
Norm@50keV : 2.10669E+04 ( -20902.7 97003 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.98 using 59 PHA bins.
# Reduced chi-squared = 0.9087 for 55 degrees of freedom
# Null hypothesis probability = 6.664903e-01
Photon flux (15-150 keV) in 0.064 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] : 3.88196 (-0.995464 1.27619)
R^2/D10^2 : 101.495 (-100.662 389.692)
(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 5.100e-09 3.148e-09
25- 50 1.689e-09 1.193e-09
50-150 1.709e-11 2.158e-11
15-150 6.806e-09 4.288e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.29400 (-3.77125 7.49352)
Norm : 120.651 (-122.171 344.891)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.543e-09 2.756e-09
25- 50 1.768e-09 1.247e-09
50-150 9.875e-11 1.168e-10
15-150 6.410e-09 4.064e-09
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.89746 (-0.98819 1.28281)
R1^2/D10^2 : 99.5149 (-99.8692 390.752)
kT2 [keV] : 4.15335E-02 (-0.0415335 -0.0415335)
R2^2/D10^2 : 7.00358E-02 (-0.0700403 -0.0700403)
------------------------------------------------------------
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
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: 4.03198 ( -0.903677 1.37517 )
Norm@50keV : 4.04707E-03 ( -0.00400158 0.00416588 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.75 using 59 PHA bins.
# Reduced chi-squared = 0.9780 for 57 degrees of freedom
# Null hypothesis probability = 5.221094e-01
Photon flux (15-150 keV) in 0.064 sec: 2.58240 ( -1.28313 1.28089 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.74659e-09 ( -3.07277e-09 3.08012e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 5.04931E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.26 using 59 PHA bins.
# Reduced chi-squared = 1.183 for 56 degrees of freedom
# Null hypothesis probability = 1.639724e-01
Photon flux (15-150 keV) in 0.064 sec: 3.53415 3.55136 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.32786e-14 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.32162 ( 1.24546 1.24546 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 17.3270 ( -3.4072 4.11025 )
Norm@50keV : 2.10669E+04 ( -20902.7 97003 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.98 using 59 PHA bins.
# Reduced chi-squared = 0.9087 for 55 degrees of freedom
# Null hypothesis probability = 6.664903e-01
Photon flux (15-150 keV) in 0.064 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) = 1.54e-09
S(50-100 keV) = 3.36e-10
T90 vs. Hardness ratio plot
T90 = 0.0640000104904175 sec.
Hardness ratio (energy fluence ratio) = 0.218182
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.13941
Count Ratio (50-100 keV) / (15-25 keV) = -0.361958
Mask shadow pattern
IMX = 1.047853608555413E+00, IMY = 1.519794155521229E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000
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:
-60.904000 -7.904000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
268.5006 -1.3886 7.8 43.2 -59.7 0.4540 1.5 8.8 SW J1753.5-0127
274.1292 -14.1306 5.7 36.1 -78.6 0.3883 2.0 9.1 GX 17+2
275.9485 -30.4522 7.5 38.0 -105.8 0.3630 1.5 5.3 H1820-303
284.9822 -25.0411 48.5 28.5 -102.9 -0.0313 -0.2 7.8 HT1900.1-2455
288.8885 10.9879 4.4 30.9 -25.3 0.2860 2.6 5.9 GRS 1915+105
299.5769 35.2380 1.8 47.2 8.0 1.1508 6.3 2.3 Cyg X-1
308.1193 40.9004 12.6 51.7 18.0 0.2862 0.9 3.2 Cyg X-3
341.1965 16.2508 3.1 40.2 69.1 1.3736 3.8 ------ UNKNOWN
303.2249 44.1330 2.7 55.3 14.0 2.4312 4.3 ------ UNKNOWN
297.3978 -15.1467 2.9 14.0 -89.2 0.3726 4.1 ------ UNKNOWN
277.5253 -51.9946 2.8 49.4 -132.7 1.6764 4.1 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.064000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
268.3290 -1.5913 3.2 43.3 -60.1 0.0394 3.6 8.6 SW J1753.5-0127
274.0797 -14.0991 114.5 36.2 -78.5 -0.0007 -0.1 5.7 GX 17+2
275.8920 -30.4559 4.6 38.1 -105.8 -0.0195 -2.5 5.6 H1820-303
285.1854 -24.8477 5.1 28.3 -102.7 0.0100 2.3 9.2 HT1900.1-2455
288.7639 11.0907 14.0 31.0 -25.3 0.0028 0.8 8.9 GRS 1915+105
299.5602 35.3519 4.4 47.3 8.1 0.0164 2.6 9.1 Cyg X-1
308.1343 40.9698 13.6 51.7 18.0 0.0085 0.8 1.5 Cyg X-3
327.9215 -18.1254 2.3 18.0 137.1 0.0155 5.1 ------ UNKNOWN
321.5877 -57.4333 2.2 47.4 -167.0 0.0320 5.3 ------ UNKNOWN
286.6084 13.1018 2.4 33.9 -25.3 0.0184 4.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
76.396590 235.796600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3812 35.3247 5.1 28.0 -64.5 0.6267 2.2 3.9 Her X-1
268.4013 -1.5042 6.9 36.1 -141.5 0.4655 1.7 3.7 SW J1753.5-0127
270.3122 -24.9456 6.1 57.1 -156.3 2.1266 2.0 8.2 GX 5-1
270.3842 -25.6976 5.9 57.8 -156.6 2.4325 1.9 5.2 GRS 1758-258
273.9621 -14.0782 6.0 45.7 -156.5 0.6807 1.9 3.6 GX 17+2
284.9454 -24.8875 5.7 54.8 -172.0 -1.4099 -2.0 5.3 HT1900.1-2455
288.7989 10.9706 3.3 18.9 -179.6 0.6683 3.5 1.5 GRS 1915+105
299.6009 35.2055 0.5 11.8 65.3 4.9697 25.5 0.6 Cyg X-1
307.9835 41.0341 5.2 20.3 56.4 -0.5027 -2.2 7.5 Cyg X-3
326.0620 38.2482 3.2 33.1 70.3 1.3997 3.6 6.8 Cyg X-2
308.0646 37.6336 1.4 19.1 65.8 1.8977 8.1 ------ UNKNOWN
304.3886 8.2489 2.3 27.0 145.2 1.1246 5.1 ------ UNKNOWN
299.6199 -7.6574 2.6 39.4 165.8 1.3755 4.5 ------ UNKNOWN
212.4734 81.7167 3.1 58.3 -3.8 4.5128 3.7 ------ UNKNOWN
267.7761 50.2063 2.8 25.0 -24.5 0.8644 4.1 ------ UNKNOWN
215.5079 72.6937 2.6 56.2 -14.3 3.2055 4.4 ------ UNKNOWN
Plot creation:
Sun Oct 10 22:36:07 EDT 2021