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
125.9596 3.3567 0.0123 35.5876 -99.7446 1.5358368 15.616 TRIG_01001514
Foreground time interval of the image:
0.008 6.008 (delta_t = 6.000 [sec])
Background time interval of the image:
-239.992 0.008 (delta_t = 240.000 [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 0.008 sec. to 6.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.10342 ( -0.176988 0.186299 )
Norm@50keV : 1.45787E-02 ( -0.00169491 0.00165153 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.01 using 59 bins.
Reduced chi-squared = 1.01772
# Null hypothesis probability of 4.38e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 6 sec: 2.29769 ( -0.21355 0.21397 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.13132e-07 ( -8.4495e-08 8.56644e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.008 sec. to 6.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.16183 ( -0.615652 0.0057792 )
Epeak [keV] : 117.533 ( )
Norm@50keV : 1.35174E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.98 using 59 bins.
Reduced chi-squared = 1.03536
# Null hypothesis probability of 4.02e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 6 sec: 2.27301 ( -0.20683 0.20677 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.08056e-07 ( -9.22896e-08 9.78672e-08 ) ergs/cm2
Band function
Time interval is from 0.008 sec. to 6.008 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] : 9.79356 (-1.03524 1.15489)
R^2/D10^2 : 1.11149 (-0.395121 0.614939)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 89.05 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.23e-03 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.293e-07 2.361e-08
25- 50 3.120e-07 3.624e-08
50-150 1.533e-07 3.951e-08
15-150 5.946e-07 6.975e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 60.5403 (-14.799 22.3999)
Norm : 11.7878 (-1.85462 2.15762)
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.27 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.26e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.780e-07 2.307e-08
25- 50 2.717e-07 2.688e-08
50-150 3.114e-07 6.834e-08
15-150 7.611e-07 9.270e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.23525 (-2.25465 3.70568)
R1^2/D10^2 : 9.19884 (-7.46068 17.7329)
kT2 [keV] : 18.0364 (-6.29474 85.6694)
R2^2/D10^2 : 7.37266E-02 (-0.0716702 0.162349)
------------------------------------------------------------
#Fit statistic : Chi-Squared 64.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.83e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.927e-07 9.838e-08
25- 50 2.484e-07 8.916e-08
50-150 3.073e-07 1.727e-07
15-150 7.485e-07 2.946e-07
Peak spectrum fit
Power-law model
Time interval is from 1.008 sec. to 2.008 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.11966 ( -0.277021 0.307992 )
Norm@50keV : 2.31208E-02 ( -0.00458717 0.0043891 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.22 using 59 bins.
Reduced chi-squared = 0.881053
# Null hypothesis probability of 7.26e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 3.67353 ( -0.54986 0.55039 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.15283e-07 ( -3.73895e-08 3.81248e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.008 sec. to 2.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.83226 ( -1.31798 0.295829 )
Epeak [keV] : 25.8867 ( -20.6072 -25.8844 )
Norm@50keV : 3.34594E-02 ( -0.0180697 0.14785 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.02 using 59 bins.
Reduced chi-squared = 0.893214
# Null hypothesis probability of 7.00e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 3.63735 ( -0.56883 0.5586 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.11106e-07 ( -3.98405e-08 4.10156e-08 ) ergs/cm2
Band function
Time interval is from 1.008 sec. to 2.008 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] : 10.3146 (-1.72667 2.00743)
R^2/D10^2 : 1.49224 (-0.743745 1.52411)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.39 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.22e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.265e-08 9.790e-09
25- 50 8.477e-08 1.824e-08
50-150 4.836e-08 1.982e-08
15-150 1.658e-07 3.370e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 60.4173 (-20.826 39.2267)
Norm : 19.0525 (-4.37266 5.72833)
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.55 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.14e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.794e-08 9.995e-09
25- 50 7.311e-08 1.262e-08
50-150 8.367e-08 3.700e-08
15-150 2.047e-07 4.225e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.52553 (-1.18882 2.63413)
R1^2/D10^2 : 534.280 (-521.521 102804)
kT2 [keV] : 12.9628 (-2.65576 5.27348)
R2^2/D10^2 : 0.547347 (-0.422806 0.477482)
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.03e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.105e-08 2.392e-08
25- 50 6.939e-08 3.214e-08
50-150 7.104e-08 3.426e-08
15-150 1.915e-07 7.150e-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: 2.10342 ( -0.176988 0.186299 )
Norm@50keV : 1.45787E-02 ( -0.00169491 0.00165153 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.01 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.38e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 6 sec: 2.29749 ( -0.213524 0.213939 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.12982e-07 ( -8.46306e-08 8.56584e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.16332 ( -1.99433 -1.99433 )
Epeak [keV] : 116.461 ( )
Norm@50keV : 1.34917E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.98 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.02e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 6 sec: 2.29808 ( -0.21601 0.21033 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.12052e-07 ( -9.3342e-08 8.6556e-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) = 2.52e-07
S(50-100 keV) = 2.35e-07
T90 vs. Hardness ratio plot
T90 = 5 sec.
Hardness ratio (energy fluence ratio) = 0.93254
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.972605
Count Ratio (50-100 keV) / (15-25 keV) = 0.424022
Mask shadow pattern
IMX = -1.211199638972073E-01, IMY = 7.052772742202933E-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:
-239.992000 0.008000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6185 22.0024 0.4 18.2 148.8 9.2848 26.2 1.1 Crab
86.2568 2.1479 2.6 5.0 43.8 1.3509 4.4 ------ UNKNOWN
79.1421 -44.8284 2.4 50.8 -0.8 3.4111 4.8 ------ UNKNOWN
103.7910 -50.9142 2.5 57.1 -21.1 7.0913 4.6 ------ UNKNOWN
117.4817 -38.7650 3.4 50.5 -38.5 3.8061 3.4 ------ UNKNOWN
127.0611 -11.2836 2.8 40.0 -76.8 4.8509 4.1 ------ UNKNOWN
137.6589 29.4801 3.9 50.9 -135.4 5.2775 3.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.008000 6.008000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.7306 21.8520 6.8 18.0 148.9 0.0661 1.7 11.2 Crab
57.7935 -18.8809 3.5 40.0 41.4 0.2547 3.3 ------ UNKNOWN
122.4724 47.8513 3.1 50.9 -163.6 0.3646 3.8 ------ UNKNOWN
110.4483 -2.2839 2.2 21.4 -81.5 0.2480 5.4 ------ UNKNOWN
125.9596 3.3567 0.7 35.6 -99.7 1.5362 15.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
64.508600 962.059700
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.4929 -40.6223 7.4 44.9 -22.5 2.7712 1.5 4.4 Vela X-1
116.1521 7.1699 3.3 10.4 99.6 3.4540 3.5 ------ UNKNOWN
113.1824 -32.6810 2.9 38.0 5.4 5.0856 4.0 ------ UNKNOWN
135.1028 34.6286 3.6 32.4 -177.9 3.9754 3.3 ------ UNKNOWN
142.4803 -38.6344 4.6 44.7 -30.6 4.6260 2.6 ------ UNKNOWN
162.6226 -13.3095 2.9 40.1 -76.8 13.2007 4.0 ------ UNKNOWN
Plot creation:
Sat Jul 30 07:28:49 EDT 2022