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
280.7594 -28.8403 0.0090 49.1442 -18.0131 3.1176393 21.380 TRIG_01154967
Foreground time interval of the image:
-0.256 1.840 (delta_t = 2.096 [sec])
Background time interval of the image:
-239.680 -0.256 (delta_t = 239.424 [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
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)
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 -0.256 sec. to 1.840 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.974149 ( -0.119066 0.116988 )
Norm@50keV : 0.100813 ( -0.0069036 0.00687858 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.27 using 59 bins.
Reduced chi-squared = 0.952105
# Null hypothesis probability of 5.78e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 2.096 sec: 9.51637E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.30648e-06 ( -1.66098e-07 1.66617e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.256 sec. to 1.840 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.872096 ( -0.428322 0.128773 )
Epeak [keV] : 657.793 ( -965.017 -965.017 )
Norm@50keV : 0.111696 ( -0.0118983 0.0556396 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.26 using 59 bins.
Reduced chi-squared = 0.968929
# Null hypothesis probability of 5.41e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 2.096 sec: 11.5779 ( -0.8358 0.8191 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.29917e-06 ( -1.65967e-07 1.73591e-07 ) ergs/cm2
Band function
Time interval is from -0.256 sec. to 1.840 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] : 23.9499 (-2.24484 2.58721)
R^2/D10^2 : 0.321760 (-0.0871469 0.115227)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 99.47 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.26e-04 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.871e-08 9.474e-09
25- 50 3.812e-07 4.255e-08
50-150 1.629e-06 1.636e-07
15-150 2.079e-06 1.781e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 47.1757 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 120.57 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.86e-06 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.462e-07 2.012e-08
25- 50 4.736e-07 5.722e-08
50-150 1.039e-06 2.950e-07
15-150 1.759e-06 3.566e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.97019 (-1.596 2.08601)
R1^2/D10^2 : 5.76612 (-2.99999 6.55898)
kT2 [keV] : 38.3837 (-6.8566 12.4066)
R2^2/D10^2 : 6.75684E-02 (-0.0368415 0.055293)
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.01 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.65e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.662e-07 6.083e-08
25- 50 4.275e-07 1.226e-07
50-150 1.758e-06 4.657e-07
15-150 2.351e-06 6.072e-07
Peak spectrum fit
Power-law model
Time interval is from -0.252 sec. to 0.748 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.845332 ( -0.122842 0.120158 )
Norm@50keV : 0.175407 ( -0.0128031 0.0127317 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 62.83 using 59 bins.
Reduced chi-squared = 1.10228
# Null hypothesis probability of 2.78e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.630385 ( 0.038211 0.615735 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.01196e-06 ( -1.52187e-07 1.52602e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.252 sec. to 0.748 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.628871 ( -0.498266 0.339746 )
Epeak [keV] : 387.179 ( -387.179 -387.179 )
Norm@50keV : 0.216753 ( -0.0509434 0.128689 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 62.17 using 59 bins.
Reduced chi-squared = 1.11018
# Null hypothesis probability of 2.66e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 20.0344 ( -1.4694 1.4707 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.85896e-08 ( -3.85894e-08 -3.77218e-08 ) ergs/cm2
Band function
Time interval is from -0.252 sec. to 0.748 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] : 25.6091 (-2.44168 2.85029)
R^2/D10^2 : 0.479624 (-0.130034 0.170082)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 91.75 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.40e-03 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.394e-08 8.085e-09
25- 50 3.097e-07 3.705e-08
50-150 1.501e-06 1.515e-07
15-150 1.864e-06 1.830e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 78.2966 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 151.37 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.72e-10 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.950e-07 1.735e-08
25- 50 3.750e-07 5.130e-08
50-150 8.225e-07 2.502e-07
15-150 1.393e-06 4.282e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.14499 (-2.16773 3.11342)
R1^2/D10^2 : 7.54501 (-4.619 13.5347)
kT2 [keV] : 37.6243 (-6.79766 13.6869)
R2^2/D10^2 : 0.135954 (-0.0803578 0.114368)
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.12 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.96e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.176e-07 5.409e-08
25- 50 3.392e-07 1.186e-07
50-150 1.582e-06 4.331e-07
15-150 2.038e-06 6.171e-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: 0.974149 ( -0.119066 0.116988 )
Norm@50keV : 0.100813 ( -0.0069036 0.00687858 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.78e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 2.096 sec: 11.5925 ( -0.80579 0.806879 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.30625e-06 ( -1.66237e-07 1.66568e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.920922 ( -0.448852 0.159064 )
Epeak [keV] : 998.182 ( -998.918 -998.918 )
Norm@50keV : 0.107718 ( -0.01208 0.0559881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.25 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.41e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 2.096 sec: 11.5964 ( -0.8062 0.7998 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.30403e-06 ( 0 0 ) 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) = 4.19e-07
S(50-100 keV) = 8.55e-07
T90 vs. Hardness ratio plot
T90 = 1.37600004673004 sec.
Hardness ratio (energy fluence ratio) = 2.04057
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.81062
Count Ratio (50-100 keV) / (15-25 keV) = 2.44664
Mask shadow pattern
IMX = 1.099561992504283E+00, IMY = 3.575473926437373E-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:
-239.680000 -0.256000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2903 35.2370 3.4 33.6 97.8 -3.2392 -3.4 10.4 Her X-1
262.8961 -24.7392 10.4 50.9 3.4 0.8577 1.1 6.2 GX 1+4
268.3610 -1.4714 55.1 28.9 18.1 0.1332 0.2 1.2 SW J1753.5-0127
270.2218 -24.9758 5.8 48.1 -4.5 1.2404 2.0 7.1 GX 5-1
270.3430 -25.7330 3.5 48.7 -5.1 2.2274 3.3 2.3 GRS 1758-258
273.9333 -13.9080 6.3 36.5 -2.9 1.1931 1.8 8.8 GX 17+2
275.8401 -30.3026 5.6 51.5 -13.0 -1.8478 -2.1 5.9 H1820-303
285.0945 -25.0438 6.5 44.9 -22.6 1.2833 1.8 8.1 HT1900.1-2455
288.9006 10.8157 3.8 9.0 -30.7 -1.5433 -3.0 9.8 GRS 1915+105
299.5662 35.1991 1.5 18.4 -176.2 3.9324 7.6 1.2 Cyg X-1
308.1518 40.9575 3.0 27.1 -172.4 1.9376 3.8 1.9 Cyg X-3
326.1533 38.1109 0.0 37.5 -154.2 -1.4600 -1.9 12.7 Cyg X-2
311.9838 65.3486 3.5 48.2 166.3 7.5846 3.3 ------ UNKNOWN
286.1854 14.6247 2.6 5.5 -5.2 2.2386 4.5 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.256000 1.840000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3077 35.4885 0.0 33.7 98.2 0.0467 0.5 11.4 Her X-1
262.8866 -24.7569 6.6 50.9 3.4 -0.2341 -1.7 6.7 GX 1+4
268.5182 -1.3636 3.7 28.7 18.0 -0.1873 -3.1 10.5 SW J1753.5-0127
270.2733 -24.9871 5.1 48.1 -4.6 -0.2569 -2.2 5.6 GX 5-1
270.3624 -25.8475 23.0 48.8 -5.1 0.0542 0.5 7.1 GRS 1758-258
274.1562 -13.9396 14.3 36.5 -3.2 -0.0536 -0.8 10.5 GX 17+2
275.8102 -30.3539 39.0 51.5 -13.0 0.0501 0.3 6.0 H1820-303
285.1577 -24.9613 10.1 44.8 -22.7 0.1225 1.1 7.1 HT1900.1-2455
288.6315 10.9519 281.7 8.8 -29.0 0.0020 0.0 9.8 GRS 1915+105
299.4395 35.2732 19.2 18.4 -176.6 -0.0289 -0.6 8.5 Cyg X-1
308.0008 41.0600 8.5 27.1 -172.8 0.0736 1.4 8.1 Cyg X-3
326.1872 38.3129 58.5 37.6 -154.5 0.0150 0.2 0.9 Cyg X-2
277.6204 68.5266 2.5 49.2 148.2 0.8253 4.6 ------ UNKNOWN
276.8460 -23.2320 3.2 44.4 -11.6 0.3337 3.6 ------ UNKNOWN
346.2560 55.8439 2.3 55.9 -171.7 1.0632 5.1 ------ UNKNOWN
280.7594 -28.8403 0.5 49.1 -18.0 3.1180 21.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
814.520600 962.453200
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
57.4508 -79.9327 3.7 48.2 166.3 3.9944 3.1 ------ UNKNOWN
19.8508 -28.5809 2.6 5.5 -4.9 1.3091 4.5 ------ UNKNOWN
347.4193 -18.6688 2.4 32.7 -75.6 2.3913 4.8 ------ UNKNOWN
Plot creation:
Fri Jun 16 09:13:30 EDT 2023