Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
226.8013 -41.3526 0.0154 12.8433 -53.3051 0.6973701 12.439 TRIG_01191188
Foreground time interval of the image:
-8.632 9.584 (delta_t = 18.216 [sec])
Background time interval of the image:
-239.504 -8.632 (delta_t = 230.872 [sec])
Lightcurves
Notes:
- 1) The mask-weighted light curves are using the flight position.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) 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.
- 4) 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.
- 5) 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)
Quad-rate summed light curves (from T0-300s to T0+1000s)
Spectral Evolution
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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.
Time averaged spectrum fit using the average DRM
Power-law model
Time interval is from -8.632 sec. to 9.584 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.26018 ( -0.281538 0.273434 )
Norm@50keV : 2.09318E-03 ( -0.000309166 0.000309166 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.28 using 59 bins.
Reduced chi-squared = 0.987368
# Null hypothesis probability of 5.02e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 18.22 sec: 0.247984 ( -0.038259 0.038472 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.80714e-07 ( -6.20316e-08 6.26988e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -8.632 sec. to 9.584 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.25627 ( -0.8424 1.93747 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 2.10237E-03 ( -0.000310556 -0.00210243 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.28 using 59 bins.
Reduced chi-squared = 1.005
# Null hypothesis probability of 4.64e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 18.22 sec: 0.248967 ( -0.041502 0.039324 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.82181e-07 ( -6.7907e-08 6.40692e-08 ) ergs/cm2
Band function
Time interval is from -8.632 sec. to 9.584 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 19.9498 (-4.12184 5.4422)
R^2/D10^2 : 1.09292E-02 (-0.00587744 0.012634)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 69.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.19e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.529e-08 4.814e-09
25- 50 7.605e-08 2.073e-08
50-150 2.243e-07 6.619e-08
15-150 3.156e-07 7.680e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-56.545 -200)
Norm : 1.03253 (-0.15493 0.15493)
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.03 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.66e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.685e-08 2.684e-08
25- 50 9.012e-08 5.031e-08
50-150 1.977e-07 1.117e-07
15-150 3.346e-07 1.868e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.62142 (-2.21224 3.05328)
R1^2/D10^2 : 0.300953 (-0.222297 0.632462)
kT2 [keV] : 32.4941 (-9.64497 30.2326)
R2^2/D10^2 : 1.99370E-03 (-0.00165643 0.00424429)
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.85e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.203e-08 2.438e-08
25- 50 8.087e-08 4.356e-08
50-150 2.674e-07 1.509e-07
15-150 3.903e-07 2.063e-07
Peak spectrum fit
Power-law model
Time interval is from 2.072 sec. to 3.072 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.90608 ( -0.512923 0.600111 )
Norm@50keV : 4.52860E-03 ( -0.00160889 0.00147091 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.57 using 59 bins.
Reduced chi-squared = 1.01
# Null hypothesis probability of 4.54e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.651628 ( -0.173023 0.173132 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.16438e-08 ( -1.3471e-08 1.41248e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 2.072 sec. to 3.072 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.91705 ( -0.524487 1.00776 )
Epeak [keV] : 9999.32 ( -9999.35 -9999.36 )
Norm@50keV : 4.49569E-03 ( -0.00452011 0.0205106 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.57 using 59 bins.
Reduced chi-squared = 1.02804
# Null hypothesis probability of 4.17e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.652626 ( -0.174534 0.172458 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.92022e-08 ( -3.6428e-08 1.30615e-08 ) ergs/cm2
Band function
Time interval is from 2.072 sec. to 3.072 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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] : 12.4422 (-4.23724 5.66092)
R^2/D10^2 : 0.131311 (-0.129837 0.472162)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 63.04 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.71e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.309e-09 2.714e-09
25- 50 1.414e-08 8.650e-09
50-150 1.347e-08 9.010e-09
15-150 3.192e-08 1.961e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 90.0075 (-53.6914 -90.0075)
Norm : 2.92513 (-0.949652 1.67929)
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.09 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.35e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.632e-09 4.085e-09
25- 50 1.291e-08 7.875e-09
50-150 1.966e-08 1.561e-08
15-150 4.020e-08 2.743e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.85740 (-1.95258 3.33159)
R1^2/D10^2 : 46.8595 (-45.8547 127647)
kT2 [keV] : 16.7780 (-5.73722 12.2901)
R2^2/D10^2 : 3.91573E-02 (-0.0338162 0.0581011)
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.09 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.34e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.685e-09 4.792e-09
25- 50 1.065e-08 5.950e-09
50-150 1.974e-08 1.340e-08
15-150 3.908e-08 2.156e-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: 1.26018 ( -0.281538 0.273434 )
Norm@50keV : 2.09318E-03 ( -0.000309166 0.000309166 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.28 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.02e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 18.22 sec: 0.247983 ( -0.0382595 0.0384689 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.80669e-07 ( -6.20183e-08 6.27216e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.25627 ( -0.837862 1.94464 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 2.10237E-03 ( -0.000310556 -0.00210243 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.28 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.64e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 18.22 sec: 0.247820 ( -0.019186 0.038033 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.8037e-07 ( -3.32169e-08 6.23397e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : ( )
beta : ( )
Epeak [keV] : ( )
Norm@50keV : ( )
------------------------------------------------------------
Photon flux (15-150 keV) in 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) = 8.29e-08
S(50-100 keV) = 1.38e-07
T90 vs. Hardness ratio plot
T90 = 14.4879999160767 sec.
Hardness ratio (energy fluence ratio) = 1.66466
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.09346
Count Ratio (50-100 keV) / (15-25 keV) = 1.11521
Mask shadow pattern
IMX = 1.362359546233123E-01, IMY = 1.828085824036829E-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:
-239.504000 -8.632000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.4882 -60.4536 36.0 36.3 -145.6 0.2396 0.3 11.4 Cen X-3
186.3299 -62.7974 4.4 28.5 -147.5 1.6806 2.6 9.1 GX 301-2
244.9732 -15.6567 1.4 36.9 -3.1 6.4317 8.3 1.1 Sco X-1
256.0084 -37.8378 1.2 19.3 34.6 5.7120 9.4 1.1 4U 1700-377
256.2991 -36.2684 22.5 20.7 32.5 0.3177 0.5 11.4 GX 349+2
262.8480 -24.6061 30.4 33.6 29.7 -0.3505 -0.4 12.1 GX 1+4
264.7539 -44.5217 7.3 19.6 62.9 0.9577 1.6 4.3 4U 1735-44
270.2891 -25.1713 9.5 36.7 40.2 1.5697 1.2 5.5 GX 5-1
270.1729 -25.8380 23.2 36.1 40.7 0.6176 0.5 9.0 GRS 1758-258
273.9527 -14.0418 15.8 47.9 35.8 -1.4986 -0.7 3.1 GX 17+2
275.8630 -30.2961 15.4 35.6 52.1 -0.9829 -0.8 5.3 H1820-303
263.1456 -33.9746 8.6 25.9 40.5 0.9666 1.4 11.5 GX 354-0
261.9332 -16.2014 0.4 40.8 22.3 29.7829 27.1 ------ UNKNOWN
257.8550 -13.7045 3.0 41.7 15.4 4.0833 3.8 ------ UNKNOWN
255.2926 -34.7216 2.5 21.6 28.2 2.7771 4.7 ------ UNKNOWN
139.8464 -50.8197 2.5 55.9 -146.3 16.2632 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-8.632000 9.584000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.0206 -60.6201 11.4 36.5 -146.0 -0.0803 -1.0 8.7 Cen X-3
186.5322 -62.9750 0.0 28.4 -147.9 0.1001 1.5 12.7 GX 301-2
245.0907 -15.7150 6.3 36.9 -2.9 -0.1583 -1.8 7.8 Sco X-1
256.0474 -37.8252 2.7 19.4 34.6 -0.2706 -4.2 3.1 4U 1700-377
256.3744 -36.2724 57.6 20.8 32.6 0.0130 0.2 9.5 GX 349+2
262.9575 -24.5985 4.7 33.7 29.8 0.2309 2.4 9.3 GX 1+4
264.7779 -44.4080 5.7 19.7 62.7 -0.1451 -2.0 2.9 4U 1735-44
270.2980 -25.2176 3.8 36.6 40.2 0.3506 3.1 8.3 GX 5-1
270.1937 -25.6762 7.0 36.2 40.6 -0.1884 -1.7 7.1 GRS 1758-258
273.9905 -13.9421 7.4 48.1 35.8 -0.4276 -1.6 5.7 GX 17+2
275.9786 -30.4964 5.2 35.5 52.5 -0.2632 -2.2 8.2 H1820-303
263.1469 -33.7229 5.2 26.1 40.1 -0.1695 -2.2 10.3 GX 354-0
90.4482 -79.5250 2.6 47.0 172.3 0.5273 4.5 ------ UNKNOWN
238.7915 -70.5856 2.7 18.6 162.9 0.2393 4.2 ------ UNKNOWN
226.8013 -41.3526 0.9 12.8 -53.3 0.6971 12.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
101.796590 815.996600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3190 -60.6206 17.9 38.8 -165.3 1.3363 0.6 0.2 Cen X-3
186.4192 -62.8818 4.4 31.9 -172.1 4.2079 2.6 9.3 GX 301-2
244.9777 -15.6115 1.1 30.1 10.7 20.3660 10.1 1.7 Sco X-1
255.9512 -37.7196 2.9 22.7 64.4 7.7253 4.0 7.7 4U 1700-377
256.4766 -36.5507 4.6 23.4 62.0 5.1388 2.5 7.9 GX 349+2
263.0077 -24.7450 101.4 34.2 46.4 -0.3997 -0.1 0.1 GX 1+4
264.8279 -44.4361 11.4 27.8 83.3 2.8340 1.0 3.7 4U 1735-44
270.4456 -25.1449 20.2 39.4 53.7 2.7742 0.6 9.6 GX 5-1
270.4051 -25.6573 6.8 39.1 54.3 8.1436 1.7 7.6 GRS 1758-258
275.9467 -30.2466 9.6 40.8 64.4 -9.9701 -1.2 7.3 H1820-303
262.9457 -33.8621 117.0 29.4 61.1 -0.2933 -0.1 2.7 GX 354-0
261.9352 -16.1964 0.5 39.3 34.7 94.0973 22.4 ------ UNKNOWN
256.3492 -1.0458 2.8 48.3 15.3 18.9900 4.1 ------ UNKNOWN
220.2355 -39.7594 2.8 5.2 -100.6 5.8429 4.1 ------ UNKNOWN
179.9244 -45.0765 2.9 33.9 -138.4 8.5975 4.0 ------ UNKNOWN
148.3291 -43.1615 2.9 55.9 -146.3 41.5790 4.1 ------ UNKNOWN
165.0205 -34.6805 3.7 48.1 -129.2 20.1973 3.1 ------ UNKNOWN
Plot creation:
Wed Dec 27 00:33:35 EST 2023