Special notes of this burst
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
320.7590 -0.2603 0.0131 23.1186 36.8197 0.1394980 14.764 TRIG_01102329
Foreground time interval of the image:
-0.032 0.156 (delta_t = 0.188 [sec])
Background time interval of the image:
-239.984 -0.032 (delta_t = 239.952 [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 0.032000
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 0.032000
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 0.032000
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 -0.032 sec. to 0.156 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.18675 ( -0.203151 0.203339 )
Norm@50keV : 4.65864E-02 ( -0.00541008 0.00539567 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 59.17 using 59 bins.
Reduced chi-squared = 1.03807
# Null hypothesis probability of 3.96e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.188 sec: 5.45833 ( -0.62937 0.62956 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.92026e-08 ( -1.21144e-08 1.22557e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.032 sec. to 0.156 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.18263 ( -0.608655 0.249481 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 4.68133E-02 ( -0.00544659 0.00537414 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 59.17 using 59 bins.
Reduced chi-squared = 1.05661
# Null hypothesis probability of 3.61e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.188 sec: 2.05723 ( -0.88134 0.62171 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.99204e-08 ( -1.7367e-08 1.2065e-08 ) ergs/cm2
Band function
Time interval is from -0.032 sec. to 0.156 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] : 16.9064 (-2.76778 3.56001)
R^2/D10^2 : 0.430544 (-0.197557 0.34322)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 80.34 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.25e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.719e-09 9.983e-10
25- 50 2.079e-08 3.466e-09
50-150 4.235e-08 1.048e-08
15-150 6.785e-08 1.292e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-36.4794 -200)
Norm : 21.7568 (-2.5656 2.5656)
------------------------------------------------------------
#Fit statistic : Chi-Squared 67.81 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.55e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.024e-08 5.732e-09
25- 50 1.970e-08 1.088e-08
50-150 4.320e-08 2.382e-08
15-150 7.314e-08 4.035e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.59710 (-2.9585 4.16799)
R1^2/D10^2 : 2.04920 (-1.1135 3.3356)
kT2 [keV] : 58.8525 (-28.9525 -58.9333)
R2^2/D10^2 : 8.42015E-03 (-0.00734219 0.0466463)
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.76 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.74e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.760e-09 4.331e-09
25- 50 1.963e-08 1.050e-08
50-150 5.894e-08 3.359e-08
15-150 8.633e-08 4.721e-08
Peak spectrum fit
Power-law model
Time interval is from -0.436 sec. to 0.564 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.976207 ( -0.439419 0.398064 )
Norm@50keV : 8.76991E-03 ( -0.00171407 0.00166332 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.92 using 59 bins.
Reduced chi-squared = 1.03368
# Null hypothesis probability of 4.05e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.00848 ( -0.19745 0.19759 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.56643e-08 ( -2.01377e-08 2.02615e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.436 sec. to 0.564 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.29725 ( -0.641121 0.526295 )
Epeak [keV] : 99.7229 ( )
Norm@50keV : 1.56079E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.17 using 59 bins.
Reduced chi-squared = 1.00304
# Null hypothesis probability of 4.69e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.02016 ( -0.229012 0.20229 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.54729e-08 ( -2.00297e-08 2.03462e-08 ) ergs/cm2
Band function
Time interval is from -0.436 sec. to 0.564 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] : 31.8504 (-12.5419 32.3717)
R^2/D10^2 : 1.13931E-02 (-0.0090296 0.0373096)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 73.13 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.37e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.742e-09 9.610e-10
25- 50 1.100e-08 5.331e-09
50-150 7.683e-08 4.140e-08
15-150 8.957e-08 3.878e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-61.261 -200)
Norm : 4.11882 (-0.803138 0.803138)
------------------------------------------------------------
#Fit statistic : Chi-Squared 66.40 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.85e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.026e-08 6.045e-09
25- 50 1.974e-08 1.154e-08
50-150 4.329e-08 2.443e-08
15-150 7.329e-08 4.185e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.06106 (-2.85015 4.23094)
R1^2/D10^2 : 0.688387 (-0.518784 2.09245)
kT2 [keV] : 199.068 (-151.009 -199.076)
R2^2/D10^2 : 2.83823E-04 (-7.45807e-05 0.00329957)
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.46 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.34e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.804e-09 5.160e-09
25- 50 1.683e-08 9.535e-09
50-150 8.053e-08 7.275e-08
15-150 1.062e-07 9.300e-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: 1.18675 ( -0.203151 0.203339 )
Norm@50keV : 4.65864E-02 ( -0.00541008 0.00539567 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 59.17 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.96e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.188 sec: 5.45831 ( -0.629358 0.629547 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.91919e-08 ( -1.21114e-08 1.22581e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.18263 ( -0.609631 0.247851 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 4.68133E-02 ( -0.00544659 0.00537414 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 59.17 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.61e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.188 sec: 5.45879 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 8.90569e-08 ( -1.21416e-08 1.22967e-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) = 1.86e-08
S(50-100 keV) = 3.27e-08
T90 vs. Hardness ratio plot
T90 = 0.139999985694885 sec.
Hardness ratio (energy fluence ratio) = 1.75806
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.69248
Count Ratio (50-100 keV) / (15-25 keV) = 1.35178
Mask shadow pattern
IMX = 3.417609168478940E-01, IMY = -2.558530639837800E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.032000
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:
-239.984000 -0.032000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.5744 35.1758 0.7 33.2 129.6 9.7400 16.1 1.7 Cyg X-1
308.0342 40.9487 3.8 30.0 145.3 1.3673 3.1 3.5 Cyg X-3
326.0180 38.2331 6.0 19.6 168.4 0.6226 1.9 9.0 Cyg X-2
19.0880 57.4948 2.8 50.7 -145.3 3.5333 4.1 ------ UNKNOWN
10.1375 1.6883 3.3 40.6 -63.9 3.0966 3.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-0.032000 0.156000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.4524 35.2097 5.0 33.3 129.6 -0.0327 -2.3 6.8 Cyg X-1
308.0700 40.7865 4.9 29.9 145.1 -0.0279 -2.3 10.1 Cyg X-3
326.1001 38.4495 6.1 19.7 168.8 0.0149 1.9 8.4 Cyg X-2
293.3220 28.7472 2.5 37.0 116.7 0.0862 4.6 ------ UNKNOWN
320.7590 -0.2603 0.8 23.1 36.8 0.1394 14.8 ------ UNKNOWN
319.8144 67.2746 2.7 48.4 177.9 0.0716 4.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
67.516660 302.276000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.6711 10.8163 8.6 33.8 120.6 0.3599 1.3 10.8 GRS 1915+105
299.6085 35.2210 2.6 40.6 163.5 1.2262 4.4 1.5 Cyg X-1
308.1995 40.8787 5.9 42.7 176.4 0.4919 2.0 6.0 Cyg X-3
326.1764 38.2599 4.8 38.8 -162.8 -0.4411 -2.4 3.7 Cyg X-2
284.9220 -22.9139 2.8 41.6 64.9 2.1621 4.1 ------ UNKNOWN
282.7342 -4.6448 3.4 38.3 93.3 1.6566 3.4 ------ UNKNOWN
289.3734 -0.7333 3.1 31.4 99.4 0.8677 3.8 ------ UNKNOWN
311.9058 -49.9852 2.3 50.3 17.9 1.8207 5.1 ------ UNKNOWN
303.7415 -6.2773 2.3 18.1 80.6 0.8112 5.1 ------ UNKNOWN
325.6039 -57.0358 2.7 56.9 7.4 3.5895 4.3 ------ UNKNOWN
303.5186 44.3099 2.3 47.1 173.6 1.6037 5.0 ------ UNKNOWN
343.5360 54.7341 2.5 58.0 -154.3 3.3290 4.6 ------ UNKNOWN
0.5196 12.4091 2.8 41.4 -98.8 2.1881 4.0 ------ UNKNOWN
Plot creation:
Fri Nov 18 22:21:17 EST 2022