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
217.8603 -38.7042 0.0301 24.2814 27.1109 0.8194602 6.370 TRIG_00994165
Foreground time interval of the image:
32.140 113.701 (delta_t = 81.561 [sec])
Background time interval of the image:
-239.000 32.140 (delta_t = 271.140 [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 32.140 sec. to 901.324 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.92792 ( -0.122909 0.126029 )
Norm@50keV : 5.64250E-04 ( -4.40333e-05 4.35507e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 71.30 using 59 bins.
Reduced chi-squared = 1.25088
# Null hypothesis probability of 9.63e-02 with 57 degrees of freedom
Photon flux (15-150 keV) in 869.2 sec: 8.19579E-02 ( -0.0055905 0.0055984 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.51159e-06 ( -3.4194e-07 3.45986e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 32.140 sec. to 901.324 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.928094 ( -0.665728 0.577505 )
Epeak [keV] : 47.2005 ( -6.90131 10.6453 )
Norm@50keV : 1.99500E-03 ( -0.00101872 0.00258658 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.74 using 59 bins.
Reduced chi-squared = 1.1025
# Null hypothesis probability of 2.79e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 869.2 sec: 7.78071E-02 ( -0.0060325 0.0060414 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.11367e-06 ( -3.80313e-07 3.974e-07 ) ergs/cm2
Band function
Time interval is from 32.140 sec. to 901.324 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] : 11.3256 (-0.819081 0.886046)
R^2/D10^2 : 2.37008E-02 (-0.00593782 0.00788146)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 87.60 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.69e-03 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.550e-07 6.780e-08
25- 50 1.628e-06 1.321e-07
50-150 1.206e-06 1.956e-07
15-150 3.390e-06 2.942e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 76.0895 (-14.5909 20.7493)
Norm : 0.389639 (-0.0403301 0.0459557)
------------------------------------------------------------
#Fit statistic : Chi-Squared 62.90 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.75e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.756e-07 8.292e-08
25- 50 1.424e-06 9.648e-08
50-150 1.942e-06 3.220e-07
15-150 4.241e-06 4.159e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.89751 (-1.16693 1.87101)
R1^2/D10^2 : 0.753540 (-0.599763 2.314)
kT2 [keV] : 13.9442 (-1.60586 2.66959)
R2^2/D10^2 : 9.45325E-03 (-0.00517824 0.00642128)
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.00 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.69e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.622e-07 3.413e-07
25- 50 1.426e-06 2.794e-07
50-150 1.600e-06 3.546e-07
15-150 3.888e-06 7.875e-07
Peak spectrum fit
Power-law model
Time interval is from 68.624 sec. to 69.624 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.99881 ( -2.83472 2.42802 )
Norm@50keV : 2.63664E-03 ( -0.00259802 0.00165248 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.47 using 59 bins.
Reduced chi-squared = 0.920526
# Null hypothesis probability of 6.45e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.395295 ( -0.162387 0.162296 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.31244e-08 ( -1.50743e-08 2.04218e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 68.624 sec. to 69.624 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.03486 ( -2.16373 1.18886 )
Epeak [keV] : 590.743 ( -60.835 81.9559 )
Norm@50keV : 9.99235E-05 ( -0.000159116 0.00111829 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 46.83 using 59 bins.
Reduced chi-squared = 0.83625
# Null hypothesis probability of 8.04e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.198798 ( -0.135855 0.16968 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.68372e-08 ( -1.68368e-08 1.09971e-08 ) ergs/cm2
Band function
Time interval is from 68.624 sec. to 69.624 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] : 4.26315 (-1.62268 2.24746)
R^2/D10^2 : 6.27783 (-6.27783 74.4859)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.64 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.02e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.710e-09 4.542e-09
25- 50 3.326e-09 2.375e-09
50-150 5.868e-11 7.700e-11
15-150 1.109e-08 7.265e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.6929 (-6.78997 -11.6929)
Norm : 8.42540 (-8.4254 49.358)
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.89 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.93e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.303e-09 4.598e-09
25- 50 3.830e-09 2.545e-09
50-150 3.924e-10 4.289e-10
15-150 1.153e-08 7.000e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.90816 (-1.6218 0.976852)
R1^2/D10^2 : 9.15532 (-7.9202 91.1949)
kT2 [keV] : 198.117 (-160.596 -198.066)
R2^2/D10^2 : 1.09105E-04 (-5.1596e-05 0.00074277)
------------------------------------------------------------
#Fit statistic : Chi-Squared 41.56 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.10e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.471e-09 4.653e-09
25- 50 4.135e-09 2.523e-09
50-150 2.877e-08 2.705e-08
15-150 4.038e-08 3.031e-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: 1.52564 ( -0.227369 0.228804 )
Norm@50keV : 1.01363E-03 ( -0.000147541 0.000146443 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 48.92 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.68e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 81.56 sec: 0.127433 ( -0.0179726 0.0179975 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.81073e-07 ( -1.22269e-07 1.24316e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45371E-02 ( -2.43173 1.26204 )
Epeak [keV] : 56.8483 ( -13.7599 70.7922 )
Norm@50keV : 7.16550E-03 ( -0.00725181 0.189679 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.41 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.68e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 81.56 sec: 0.120928 ( -0.019329 0.018966 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.66695e-07 ( -1.53247e-07 1.57974e-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) = 1.33e-06
S(50-100 keV) = 1.40e-06
T90 vs. Hardness ratio plot
T90 = 705.939999938011 sec.
Hardness ratio (energy fluence ratio) = 1.05263
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.15264
Count Ratio (50-100 keV) / (15-25 keV) = 0.582591
Mask shadow pattern
IMX = 4.015590938595142E-01, IMY = -2.055848774308623E-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:
-239.000000 32.140000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.5101 -40.5642 2.0 36.8 -146.5 2.1506 5.8 1.0 Vela X-1
170.2748 -60.6293 2.9 15.1 163.1 1.0586 4.0 1.3 Cen X-3
186.6673 -62.7867 1.6 13.9 130.9 2.0001 7.2 1.0 GX 301-2
263.3151 -68.0876 2.5 40.8 96.6 4.5047 4.7 ------ UNKNOWN
251.8401 -48.4778 3.9 41.5 65.3 2.7114 3.0 ------ UNKNOWN
246.5523 -26.5735 2.7 50.6 36.8 4.8677 4.3 ------ UNKNOWN
224.7086 -67.5722 2.2 26.5 98.7 1.9817 5.3 ------ UNKNOWN
217.8175 -38.7045 2.1 24.3 27.1 1.5692 5.4 ------ UNKNOWN
101.3755 -53.1271 2.3 50.7 -179.1 3.7770 5.0 ------ UNKNOWN
213.2085 -3.8270 2.3 50.3 -14.8 2.6662 4.9 ------ UNKNOWN
213.2429 2.7220 2.4 56.4 -17.7 4.8888 4.9 ------ UNKNOWN
122.2011 -37.1685 3.0 47.3 -150.8 2.4359 3.9 ------ UNKNOWN
203.9202 -1.6642 3.0 49.4 -27.2 2.1480 3.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
32.140000 113.700610
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
135.4494 -40.6006 3.2 36.8 -146.6 0.6063 3.6 4.5 Vela X-1
170.7257 -60.6863 0.0 15.0 162.3 -0.1762 -1.6 12.6 Cen X-3
186.6064 -62.8130 25.3 13.9 131.0 -0.0533 -0.5 2.9 GX 301-2
232.3020 -32.6677 2.0 37.3 31.6 1.1483 5.7 ------ UNKNOWN
217.8620 -38.7053 1.8 24.3 27.1 0.8019 6.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
158.900590 961.700620
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.0687 -60.7219 5.6 36.7 -170.8 -2.8695 -2.1 9.4 Cen X-3
186.6423 -62.7741 3.6 30.5 179.7 3.8795 3.2 0.5 GX 301-2
244.9782 -15.6371 0.2 33.1 25.3 65.1660 50.9 0.2 Sco X-1
255.9878 -37.8681 1.7 29.7 72.4 11.0145 6.9 1.4 4U 1700-377
256.2480 -36.5372 11.9 30.3 69.9 -1.5777 -1.0 11.3 GX 349+2
262.9592 -24.7514 33.6 40.4 55.3 -0.8351 -0.3 2.7 GX 1+4
264.8166 -44.4106 7.5 35.1 86.7 3.6432 1.5 3.9 4U 1735-44
263.1073 -33.8848 9.1 36.4 68.6 2.9243 1.3 6.6 GX 354-0
257.7147 -54.2850 2.5 31.0 105.2 7.7086 4.6 ------ UNKNOWN
251.8794 -50.1385 3.5 26.5 98.5 5.0186 3.3 ------ UNKNOWN
249.6187 -12.2981 2.9 38.6 27.4 6.3633 3.9 ------ UNKNOWN
217.8145 -38.6973 1.7 0.0 -98.2 5.9996 6.6 ------ UNKNOWN
240.4748 14.0346 2.6 56.8 -1.7 17.4729 4.4 ------ UNKNOWN
231.8975 4.6631 2.7 45.3 -8.2 6.9931 4.4 ------ UNKNOWN
229.6716 7.9047 4.3 47.9 -12.3 4.9980 2.7 ------ UNKNOWN
197.0726 -16.3727 3.7 28.8 -73.1 5.0768 3.1 ------ UNKNOWN
222.5980 16.4241 3.9 55.3 -22.6 10.1631 3.0 ------ UNKNOWN
167.6099 -25.7366 3.2 43.9 -116.4 19.3018 3.7 ------ UNKNOWN
Plot creation:
Thu Oct 20 00:52:21 EDT 2022