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
246.8977 78.3949 0.0084 29.0599 126.2996 1.5330379 22.990 TRIG_00997453
Foreground time interval of the image:
0.200 10.381 (delta_t = 10.181 [sec])
Background time interval of the image:
-239.720 0.200 (delta_t = 239.920 [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 1.024000
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 1.024000
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 1.024000
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 0.200 sec. to 20.932 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.98991 ( -0.135816 0.140577 )
Norm@50keV : 5.47260E-03 ( -0.000492798 0.000485181 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.40 using 59 bins.
Reduced chi-squared = 0.919298
# Null hypothesis probability of 6.48e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 20.73 sec: 0.817165 ( -0.059504 0.059539 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.04585e-06 ( -8.87669e-08 9.00486e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.200 sec. to 20.932 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.46546 ( -0.617606 0.534396 )
Epeak [keV] : 43.0963 ( -31.0091 129.658 )
Norm@50keV : 1.08968E-02 ( -0.00540433 0.01351 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.63 using 59 bins.
Reduced chi-squared = 0.88625
# Null hypothesis probability of 7.13e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 20.73 sec: 0.798298 ( -0.062426 0.062455 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.200 sec. to 20.932 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] : 10.1335 (-0.912181 1.00319)
R^2/D10^2 : 0.353646 (-0.107634 0.155161)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 88.78 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.47e-03 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.540e-07 1.971e-08
25- 50 3.901e-07 3.255e-08
50-150 2.115e-07 4.342e-08
15-150 7.556e-07 6.126e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 67.9917 (-14.2152 20.1125)
Norm : 4.04133 (-0.471723 0.551001)
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.40e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.142e-07 2.173e-08
25- 50 3.382e-07 2.446e-08
50-150 4.250e-07 8.126e-08
15-150 9.774e-07 8.541e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.45692 (-1.02125 1.16599)
R1^2/D10^2 : 2.60917 (-1.31373 3.22885)
kT2 [keV] : 18.1099 (-3.30634 5.30651)
R2^2/D10^2 : 2.78732E-02 (-0.0180017 0.0367028)
------------------------------------------------------------
#Fit statistic : Chi-Squared 47.35 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.58e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.222e-07 6.870e-08
25- 50 3.244e-07 8.168e-08
50-150 4.285e-07 2.214e-07
15-150 9.751e-07 3.200e-07
Peak spectrum fit
Power-law model
Time interval is from 4.384 sec. to 5.384 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.01319 ( -0.186908 0.199849 )
Norm@50keV : 1.95835E-02 ( -0.00267255 0.00260717 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 66.05 using 59 bins.
Reduced chi-squared = 1.15877
# Null hypothesis probability of 1.93e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.95571 ( -0.31057 0.31059 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.80759e-07 ( -2.29034e-08 2.33114e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 4.384 sec. to 5.384 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.38133 ( -0.785325 0.675496 )
Epeak [keV] : 42.7285 ( -40.1301 -42.7358 )
Norm@50keV : 4.45894E-02 ( -0.0256606 0.0777178 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 63.50 using 59 bins.
Reduced chi-squared = 1.13393
# Null hypothesis probability of 2.29e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.90743 ( -0.31392 0.31425 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.73057e-07 ( -2.36366e-08 2.44716e-08 ) ergs/cm2
Band function
Time interval is from 4.384 sec. to 5.384 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] : 10.5936 (-1.46114 1.63755)
R^2/D10^2 : 1.11211 (-0.459778 0.826245)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 87.73 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.54e-03 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.586e-08 4.905e-09
25- 50 6.959e-08 1.006e-08
50-150 4.282e-08 1.115e-08
15-150 1.383e-07 1.750e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 67.6244 (-18.2386 28.8338)
Norm : 14.8321 (-2.2964 2.6602)
------------------------------------------------------------
#Fit statistic : Chi-Squared 63.58 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.56e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.791e-08 5.265e-09
25- 50 5.974e-08 7.305e-09
50-150 7.477e-08 1.976e-08
15-150 1.724e-07 2.365e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.53443 (-1.01561 1.25097)
R1^2/D10^2 : 19.7754 (-12.4898 42.1167)
kT2 [keV] : 16.9202 (-2.98846 4.11658)
R2^2/D10^2 : 0.148102 (-0.0868722 0.147558)
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.85 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.36e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.063e-08 2.002e-08
25- 50 5.440e-08 2.361e-08
50-150 7.819e-08 3.798e-08
15-150 1.732e-07 6.365e-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: 1.93609 ( -0.124188 0.127974 )
Norm@50keV : 8.89224E-03 ( -0.00072906 0.00071955 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.32 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.55e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 10.18 sec: 1.29613 ( -0.0892567 0.0893084 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.32736e-07 ( -6.60407e-08 6.6798e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.24947 ( -0.573038 0.507315 )
Epeak [keV] : 47.4408 ( -9.7463 19.5611 )
Norm@50keV : 2.15627E-02 ( -0.0101776 0.0232859 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.75 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.83e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 10.18 sec: 1.25864 ( -0.09301 0.09309 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.81481e-07 ( -7.30985e-08 7.53615e-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) = 3.13e-07
S(50-100 keV) = 3.15e-07
T90 vs. Hardness ratio plot
T90 = 18.8039999008179 sec.
Hardness ratio (energy fluence ratio) = 1.00639
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.06364
Count Ratio (50-100 keV) / (15-25 keV) = 0.562379
Mask shadow pattern
IMX = -3.289651009202840E-01, IMY = -4.478379599217988E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
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:
-239.720000 0.200000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4570 35.3871 24.3 53.3 -176.0 -0.4333 -0.5 2.7 Her X-1
110.7972 31.0174 2.6 52.4 13.0 4.1340 4.3 ------ UNKNOWN
146.9274 45.9607 3.1 22.7 -6.0 0.9905 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.200000 10.380600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3121 35.3322 9.2 53.3 -175.8 0.1836 1.3 7.2 Her X-1
246.8977 78.3949 0.5 29.1 126.3 1.5330 23.0 ------ UNKNOWN
204.9508 31.9103 2.6 32.1 -121.8 0.2894 4.5 ------ UNKNOWN
147.2288 13.1872 2.8 51.0 -35.8 0.5672 4.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
62.380630 415.073500
416.280000 962.414900
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.2977 35.4051 9.4 43.1 -162.8 -1.8321 -1.2 8.7 Her X-1
299.6745 35.2196 3.9 48.4 145.6 11.3850 2.9 4.3 Cyg X-1
308.1418 40.9318 3.9 44.4 134.8 9.5283 3.0 1.9 Cyg X-3
230.6846 27.9779 3.2 50.9 -135.4 14.0341 3.6 ------ UNKNOWN
Plot creation:
Thu Oct 20 00:47:58 EDT 2022