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
299.7613 +35.4112 0.0928 23.7 12.1 0.8229 2.1 TRIG_01036990
------------------------------------------
Foreground time interval of the image:
-6.000 71.801 (delta_t = 77.801 [sec])
Background time interval of the image:
-15.899 -6.000 (delta_t = 9.899 [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 64.000000
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 64.000000
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 64.000000
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
Time interval is from -6.000 sec. to 145.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.43958 ( -0.15923 0.167332 )
Norm@50keV : 1.30813E-03 ( -0.000150512 0.00014955 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.31 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.56e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 151 sec: 0.247760 ( -0.0177631 0.0177699 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.9449e-06 ( -1.67634e-07 1.71636e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -6.000 sec. to 145.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.90962 ( -0.774371 0.0849042 )
Epeak [keV] : 6.11277 ( -4.69317 18.9751 )
Norm@50keV : 2.81366E-03 ( -0.000646559 0.0059372 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 47.55 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.82e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 151 sec: 0.241995 ( -0.019032 0.019101 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.82491e-06 ( -2.05707e-07 2.25549e-07 ) ergs/cm2
Band function
Time interval is from -6.000 sec. to 145.000 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.82364 ( -2.8744 1.89646 )
beta : -2.58737 ( 9.37155 19.3715 )
Epeak [keV] : 20.3739 ( -1.51703 15.4254 )
Norm@50keV : 19.6157 ( -19.6136 440.948 )
------------------------------------------------------------
Photon flux (15-150 keV) in 151 sec: 0.242164 ( ) 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] : 7.24414 (-0.596244 0.657148)
R^2/D10^2 : 0.386607 (-0.118686 0.171741)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 75.81 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.86e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.093e-07 5.965e-08
25- 50 7.447e-07 6.984e-08
50-150 1.395e-07 3.922e-08
15-150 1.393e-06 1.314e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 33.7848 (-5.88766 7.6799)
Norm : 1.77174 (-0.276833 0.343216)
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.10 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.62e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.758e-07 5.919e-08
25- 50 7.004e-07 6.183e-08
50-150 4.457e-07 1.140e-07
15-150 1.722e-06 1.623e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.20802 (-0.868755 0.843344)
R1^2/D10^2 : 1.24804 (-0.55143 0.76954)
kT2 [keV] : 17.4293 (-4.59832 7.74991)
R2^2/D10^2 : 6.31434E-03 (-0.00482108 0.017048)
------------------------------------------------------------
#Fit statistic : Chi-Squared 45.10 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.27e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.966e-07 1.405e-07
25- 50 6.523e-07 1.641e-07
50-150 5.968e-07 3.386e-07
15-150 1.846e-06 5.854e-07
Peak spectrum fit
Power-law model
Time interval is from 139.000 sec. to 140.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.29129 ( -0.608797 0.771776 )
Norm@50keV : 3.11856E-03 ( -0.00159627 0.00161465 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.11 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.30e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.542367 ( -0.174123 0.174792 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.97544e-08 ( -1.2036e-08 1.37728e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 139.000 sec. to 140.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -10.0000 ( 10 9.6712 )
Epeak [keV] : 22.8304 ( -3.13507 3.48042 )
Norm@50keV : 1.27669E+07 ( -1.2766e+07 6.12159e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 40.54 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.40e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.529183 0.464480 0.463949 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.42532e-16 ( 0 0 ) ergs/cm2
Band function
Time interval is from 139.000 sec. to 140.000 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.95248 ( -4.95248 -4.95248 )
beta : -3.15074 ( 3.15074 1.14799 )
Epeak [keV] : 22.9871 ( -22.9871 5.46484 )
Norm@50keV : 1243.23 ( -376.101 6.96744e+06 )
------------------------------------------------------------
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.58273e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.95665 (-1.67152 2.97195)
R^2/D10^2 : 2.01137 (-2.01136 6.42019)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.28 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.27e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.384e-09 5.450e-09
25- 50 9.211e-09 5.515e-09
50-150 8.187e-10 8.435e-10
15-150 1.941e-08 1.213e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 34.7585 (-19.7596 75.5289)
Norm : 3.89439 (-1.86434 4.83485)
------------------------------------------------------------
#Fit statistic : Chi-Squared 41.81 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.34e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.484e-09 4.871e-09
25- 50 1.046e-08 6.461e-09
50-150 6.892e-09 6.210e-09
15-150 2.584e-08 1.722e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.02214 (-2.59821 2.47314)
R1^2/D10^2 : 3.53600 (-3.54459 16.8011)
kT2 [keV] : 20.4945 (-20.4636 -20.4636)
R2^2/D10^2 : 8.27708E-03 (-0.00832663 3.62395)
------------------------------------------------------------
#Fit statistic : Chi-Squared 40.03 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.35e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.416e-09 5.750e-09
25- 50 9.137e-09 4.992e-09
50-150 1.073e-08 8.730e-09
15-150 2.928e-08 1.628e-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: 2.55075 ( -0.208395 0.224258 )
Norm@50keV : 1.21594E-03 ( -0.000204402 0.000206263 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.00 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.13e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 77.8 sec: 0.246490 ( -0.0236226 0.0236267 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.59461e-07 ( -1.15566e-07 1.20274e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.596629 ( -1.85163 1.3395 )
Epeak [keV] : 22.7056 ( -19.2912 5.0311 )
Norm@50keV : 2.51777E-02 ( -0.0257864 0.467839 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.42e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 77.8 sec: 0.234543 ( -0.023862 0.024106 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.07891e-07 ( -1.04238e-07 1.29062e-07 ) ergs/cm2
Band function
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.45516E-02 ( -2.18422 -0.447518 )
beta : -3.60165 ( 3.59229 0.86228 )
Epeak [keV] : 23.7303 ( -5.06054 3.54193 )
Norm@50keV : 7.28495E-02 ( -0.0709858 300.361 )
------------------------------------------------------------
Photon flux (15-150 keV) in 77.8 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 8.47997e-07 ( -8.47452e-07 -1.23499e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 6.41e-07
S(50-100 keV) = 4.73e-07
T90 vs. Hardness ratio plot
T90 = 140 sec.
Hardness ratio (energy fluence ratio) = 0.73791
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.788664
Count Ratio (50-100 keV) / (15-25 keV) = 0.303138
Mask shadow pattern
IMX = 4.295798609889926E-01, IMY = -9.206330443351421E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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:
-15.899400 -6.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.8550 10.8209 6.6 49.9 4.4 0.2041 1.7 8.2 GRS 1915+105
299.5665 35.2689 3.3 23.9 12.2 0.1709 3.5 4.2 Cyg X-1
308.2656 41.0566 7.0 15.2 6.6 0.0725 1.6 9.4 Cyg X-3
326.1677 38.5278 0.0 13.7 -51.4 0.0630 1.4 12.4 Cyg X-2
294.4275 71.9005 2.3 23.5 115.4 0.3029 5.0 ------ UNKNOWN
281.1980 11.3964 2.0 53.0 13.2 1.0228 5.9 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-6.000000 71.800600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.7601 11.1266 0.0 49.6 4.7 0.8107 0.8 11.1 GRS 1915+105
299.8173 35.2757 0.0 23.8 11.8 0.6157 1.5 12.0 Cyg X-1
308.3317 41.0260 9.0 15.2 6.4 -0.4541 -1.3 11.0 Cyg X-3
326.1723 38.2541 29.7 14.0 -51.3 -0.1468 -0.4 4.1 Cyg X-2
339.8580 53.5430 2.2 10.0 -146.9 1.8633 5.2 ------ UNKNOWN
10.3557 47.9640 2.2 29.9 -143.3 2.4073 5.2 ------ UNKNOWN
43.5447 42.0657 2.1 52.6 -155.4 5.7487 5.6 ------ UNKNOWN
29.4371 31.9280 2.2 51.0 -136.2 8.6140 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
118.400600 963.060000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2896 35.2173 0.0 36.7 80.1 -2.2699 -1.1 11.1 Her X-1
268.4706 -1.5487 12.4 47.1 21.9 2.4393 0.9 8.4 SW J1753.5-0127
273.9732 -14.0234 16.3 55.1 7.7 5.1468 0.7 2.1 GX 17+2
288.9768 11.0439 0.0 26.2 1.3 -1.0747 -1.1 12.1 GRS 1915+105
299.6881 35.3305 0.6 0.1 6.5 15.2298 18.4 9.1 Cyg X-1
308.1184 41.1199 3.7 8.7 -156.8 2.6458 3.1 10.0 Cyg X-3
326.2006 38.1104 0.0 21.3 -128.4 -0.5829 -0.5 12.7 Cyg X-2
267.8273 -9.6001 4.0 54.1 16.8 15.9650 2.9 ------ UNKNOWN
24.8637 81.4728 3.0 54.3 167.3 12.8786 3.9 ------ UNKNOWN
270.9999 -13.0072 4.0 55.5 11.4 19.0465 2.9 ------ UNKNOWN
279.0586 0.6172 3.0 39.7 10.3 5.9206 3.8 ------ UNKNOWN
297.9006 21.7166 3.5 13.8 -16.0 3.0118 3.3 ------ UNKNOWN
294.7156 -20.8454 3.7 56.4 -17.6 11.5426 3.1 ------ UNKNOWN
25.6239 54.6413 3.7 59.6 -161.2 33.8762 3.2 ------ UNKNOWN
17.1706 51.0095 3.6 55.8 -155.3 13.4333 3.2 ------ UNKNOWN
Plot creation:
Tue Mar 16 14:40:02 EDT 2021