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
76.7173 58.2596 0.0255 49.3168 3.8274 17.0093023 7.513 TRIG_01064221
Foreground time interval of the image:
-9.448 121.301 (delta_t = 130.749 [sec])
Background time interval of the image:
-11.099 -9.448 (delta_t = 1.651 [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 -9.448 sec. to 170.968 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.13343 ( -0.0773062 0.0762066 )
Norm@50keV : 4.62820E-03 ( -0.000203613 0.000202747 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.42 using 59 bins.
Reduced chi-squared = 0.937193
# Null hypothesis probability of 6.10e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 180.4 sec: 0.538714 ( -0.025409 0.025509 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.63946e-06 ( -3.70206e-07 3.70365e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -9.448 sec. to 170.968 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.03274 ( -0.316164 0.133686 )
Epeak [keV] : 585.119 ( -586.314 -586.314 )
Norm@50keV : 5.10088E-03 ( -0.000605712 0.00175694 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.10 using 59 bins.
Reduced chi-squared = 0.948214
# Null hypothesis probability of 5.86e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 180.4 sec: 0.535756 ( -0.026789 0.026824 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.61284e-06 ( -3.79866e-07 3.75441e-07 ) ergs/cm2
Band function
Time interval is from -9.448 sec. to 170.968 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] : 22.2838 ( )
R^2/D10^2 : 1.76301E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 152.41 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.23e-10 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.906e-07 2.661e-08
25- 50 1.548e-06 1.000e-07
50-150 5.744e-06 3.301e-07
15-150 7.583e-06 3.464e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 2.35452 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 150.85 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.04e-10 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.058e-06 5.123e-08
25- 50 2.035e-06 9.020e-08
50-150 4.462e-06 2.300e-07
15-150 7.554e-06 3.617e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.3276 (-1.94473 2.10261)
R1^2/D10^2 : 0.130279 (-0.0516424 0.109581)
kT2 [keV] : 42.5129 (-8.9301 21.0546)
R2^2/D10^2 : 1.87776E-03 (-0.00125407 0.00211693)
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.72 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.75e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.913e-07 1.070e-07
25- 50 1.866e-06 2.742e-07
50-150 6.160e-06 1.603e-06
15-150 8.617e-06 1.991e-06
Peak spectrum fit
Power-law model
Time interval is from 70.524 sec. to 71.524 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.763834 ( -0.360923 0.317443 )
Norm@50keV : 1.58297E-02 ( -0.00343821 0.00325134 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.22 using 59 bins.
Reduced chi-squared = 0.933684
# Null hypothesis probability of 6.18e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.82217 ( -0.36144 0.36844 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.87875e-07 ( -3.19197e-08 3.19059e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 70.524 sec. to 71.524 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.755175 ( -1.14402 0.65528 )
Epeak [keV] : 10000.00 ( -10000 -10000 )
Norm@50keV : 1.59436E-02 ( -0.00345108 -0.0159436 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.22 using 59 bins.
Reduced chi-squared = 0.950357
# Null hypothesis probability of 5.81e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 1.80599 ( -0.38496 0.36071 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.87655e-07 ( -3.20907e-08 3.19893e-08 ) ergs/cm2
Band function
Time interval is from 70.524 sec. to 71.524 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] : 30.3868 (-6.29321 10.4985)
R^2/D10^2 : 2.63248E-02 (-0.0151447 0.0277771)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.73 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.23e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.773e-09 1.647e-09
25- 50 2.339e-08 8.876e-09
50-150 1.518e-07 5.151e-08
15-150 1.790e-07 6.304e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-35.4829 -200)
Norm : 8.07175 (-1.52361 1.52361)
------------------------------------------------------------
#Fit statistic : Chi-Squared 71.91 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.82e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.012e-08 1.196e-08
25- 50 3.871e-08 2.264e-08
50-150 8.490e-08 4.929e-08
15-150 1.437e-07 8.255e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.96827 (-2.78947 9.16388)
R1^2/D10^2 : 4.23607 (-4.1213 271.086)
kT2 [keV] : 35.0379 (-8.6336 20.3241)
R2^2/D10^2 : 1.66430E-02 (-0.0119433 0.0200848)
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.66 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.03e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.293e-08 8.121e-09
25- 50 2.536e-08 1.292e-08
50-150 1.521e-07 8.413e-08
15-150 1.904e-07 9.287e-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: 1.09191 ( -0.10486 0.102528 )
Norm@50keV : 4.17556E-03 ( -0.000253945 0.000252041 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.67 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.44e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 130.7 sec: 0.483963 ( -0.0311991 0.0313788 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.72073e-06 ( -3.29978e-07 3.30133e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.949192 ( -0.437754 0.188506 )
Epeak [keV] : 456.104 ( -456.113 -456.113 )
Norm@50keV : 4.78175E-03 ( -0.000774506 0.00235705 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.32 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.24e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 130.7 sec: 0.480326 ( -0.032712 0.032623 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.70355e-06 ( -3.3701e-07 3.35781e-07 ) 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) = 1.74e-06
S(50-100 keV) = 3.18e-06
T90 vs. Hardness ratio plot
T90 = 143.664000034332 sec.
Hardness ratio (energy fluence ratio) = 1.82759
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.82376
Count Ratio (50-100 keV) / (15-25 keV) = 1.89909
Mask shadow pattern
IMX = 1.160703420316407E+00, IMY = -7.765187250656860E-02
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:
-11.099410 -9.448000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
239.6778 68.7333 2.0 29.4 87.5 0.1202 5.7 ------ UNKNOWN
119.8248 30.0539 2.8 47.9 -51.2 0.2726 4.2 ------ UNKNOWN
148.4250 21.7630 2.6 40.9 -88.9 0.2246 4.4 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-9.448000 121.300600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
177.6206 69.8889 2.4 13.5 46.2 5.1837 4.8 ------ UNKNOWN
76.7173 58.2596 1.5 49.3 3.8 17.0140 7.5 ------ UNKNOWN
84.1320 42.3141 3.1 57.8 -14.0 17.3356 3.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
190.700600 697.400620
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6323 22.0170 0.4 36.5 -27.2 20.5930 32.8 0.2 Crab
44.1117 48.7028 2.6 21.3 61.4 2.2407 4.5 ------ UNKNOWN
218.9646 76.6809 3.8 43.0 175.5 2.6408 3.1 ------ UNKNOWN
62.1238 9.8364 3.0 49.6 2.6 3.5704 3.8 ------ UNKNOWN
76.5556 58.2646 2.0 0.1 106.1 2.4386 5.7 ------ UNKNOWN
Plot creation:
Sat Jul 30 06:51:25 EDT 2022