Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
238.8278 -54.0535 0.0179 32.8 125.9 0.1033 10.7 TRIG_01070298
------------------------------------------
Foreground time interval of the image:
0.000 0.024 (delta_t = 0.024 [sec])
Background time interval of the image:
-239.180 0.000 (delta_t = 239.180 [sec])
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) 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.
- 5) 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.
- 6) 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 0.016000
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 0.016000
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 0.016000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of 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.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 0.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.10749 ( -0.263409 0.301708 )
Norm@50keV : 0.122909 ( -0.0301097 0.0297133 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.12 using 59 PHA bins.
# Reduced chi-squared = 0.5810 for 57 degrees of freedom
# Null hypothesis probability = 9.952465e-01
Photon flux (15-150 keV) in 0.024 sec: 36.5897 ( -5.86673 5.86889 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.73094e-08 ( -6.16867e-09 6.18874e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.110761 ( -2.28678 1.64196 )
Epeak [keV] : 22.4981 ( -15.9302 5.80983 )
Norm@50keV : 10.4133 ( -10.5597 341.93 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 22.31 using 59 PHA bins.
# Reduced chi-squared = 0.3984 for 56 degrees of freedom
# Null hypothesis probability = 9.999839e-01
Photon flux (15-150 keV) in 0.024 sec: 38.2683 ( -5.9878 5.9861 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.8922e-08 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.109565 ( -1.30424 4.85986 )
beta : -10.0000 ( 10 1.06581e-14 )
Epeak [keV] : 22.4934 ( -6.99469 5.81775 )
Norm@50keV : 10.5043 ( -10.5043 314.382 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 22.31 using 59 PHA bins.
# Reduced chi-squared = 0.4056 for 55 degrees of freedom
# Null hypothesis probability = 9.999742e-01
Photon flux (15-150 keV) in 0.024 sec: 38.2902 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.86338e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.76823 (-0.814952 0.849171)
R^2/D10^2 : 90.3690 (-38.459 69.48)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 24.23 using 59 PHA bins.
# Reduced chi-squared = 0.4252 for 57 degrees of freedom
# Null hypothesis probability = 9.999579e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.539e-08 3.725e-09
25- 50 1.973e-08 4.480e-09
50-150 2.890e-09 1.350e-09
15-150 3.801e-08 7.248e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 21.2301 (-4.085 4.86619)
Norm : 446.443 (-117.818 158.937)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.745e-08 3.217e-09
25- 50 1.598e-08 2.986e-09
50-150 5.283e-09 2.245e-09
15-150 3.872e-08 6.768e-09
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.94363 (-4.94363 -4.94363)
R1^2/D10^2 : 210.905 (-210.905 -210.905)
kT2 [keV] : 9.10961 (-2.76543 -9.10961)
R2^2/D10^2 : 12.3569 (-12.3569 110.818)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.658e-08 1.009e-08
25- 50 1.791e-08 1.073e-08
50-150 4.421e-09 2.692e-09
15-150 3.891e-08 2.267e-08
Peak spectrum fit
Power-law model
Time interval is from -0.486 sec. to 0.514 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.83510 ( -0.516235 0.698834 )
Norm@50keV : 5.60166E-03 ( -0.00266747 0.00271638 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.18 using 59 PHA bins.
# Reduced chi-squared = 1.214 for 57 degrees of freedom
# Null hypothesis probability = 1.293648e-01
Photon flux (15-150 keV) in 1 sec: 1.37014 ( -0.322758 0.322995 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.26903e-08 ( -1.8425e-08 1.97504e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.486 sec. to 0.514 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.91007 ( )
Epeak [keV] : 3.56801 ( )
Norm@50keV : 2.14116E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.93 using 59 PHA bins.
# Reduced chi-squared = 1.231 for 56 degrees of freedom
# Null hypothesis probability = 1.149973e-01
Photon flux (15-150 keV) in 1 sec: 1.36344 ( -0.32032 0.32097 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.10352e-08 ( -1.77106e-08 2.02345e-08 ) ergs/cm2
Band function
Time interval is from -0.486 sec. to 0.514 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.94530 ( -5.29532 1.92643 )
beta : -10.0000 ( 10 1.77636e-15 )
Epeak [keV] : 2.26856 ( -0.902682 27.3111 )
Norm@50keV : 2.02756E-02 ( -0.00906532 0.0754287 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.91 using 59 PHA bins.
# Reduced chi-squared = 1.253 for 55 degrees of freedom
# Null hypothesis probability = 9.832086e-02
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.50638 (-2.20979 2.51672)
R^2/D10^2 : 3.44853 (-2.54102 18.1462)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.160e-08 1.222e-08
25- 50 2.556e-08 1.226e-08
50-150 3.227e-09 2.518e-09
15-150 5.039e-08 2.982e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.1368 (-11.0165 19.6505)
Norm : 13.0187 (-5.49738 12.9721)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.393e-08 8.465e-09
25- 50 2.461e-08 1.062e-08
50-150 1.055e-08 8.195e-09
15-150 5.909e-08 2.331e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.93362 (-1.77003 1.9616)
R1^2/D10^2 : 109.985 (-101.15 198140)
kT2 [keV] : 10.9769 (-3.87068 6.75864)
R2^2/D10^2 : 0.283668 (-0.246622 1.68612)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.501e-08 1.389e-08
25- 50 2.254e-08 1.272e-08
50-150 1.368e-08 9.685e-09
15-150 6.123e-08 3.198e-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: 3.10749 ( -0.263409 0.301708 )
Norm@50keV : 0.122909 ( -0.0301097 0.0297133 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.12 using 59 PHA bins.
# Reduced chi-squared = 0.5810 for 57 degrees of freedom
# Null hypothesis probability = 9.952465e-01
Photon flux (15-150 keV) in 0.024 sec: 36.5897 ( -5.86673 5.86889 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.73094e-08 ( -6.16867e-09 6.18874e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.110761 ( -2.28678 1.64196 )
Epeak [keV] : 22.4981 ( -15.9302 5.80983 )
Norm@50keV : 10.4133 ( -10.5597 341.93 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 22.31 using 59 PHA bins.
# Reduced chi-squared = 0.3984 for 56 degrees of freedom
# Null hypothesis probability = 9.999839e-01
Photon flux (15-150 keV) in 0.024 sec: 38.2683 ( -5.9878 5.9861 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.8922e-08 ( 0 0 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.109565 ( -1.30424 4.85986 )
beta : -10.0000 ( 10 1.06581e-14 )
Epeak [keV] : 22.4934 ( -6.99472 5.81775 )
Norm@50keV : 10.5043 ( -10.5043 314.69 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 22.31 using 59 PHA bins.
# Reduced chi-squared = 0.4056 for 55 degrees of freedom
# Null hypothesis probability = 9.999742e-01
Photon flux (15-150 keV) in 0.024 sec: 38.2902 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 3.86338e-08 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 1.23e-08
S(50-100 keV) = 5.72e-09
T90 vs. Hardness ratio plot
T90 = 0.0199999809265137 sec.
Hardness ratio (energy fluence ratio) = 0.465041
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.847248
Count Ratio (50-100 keV) / (15-25 keV) = 0.179264
Mask shadow pattern
IMX = -3.780307197302604E-01, IMY = -5.227160418476435E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.016000
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:
-239.180000 0.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.0952 -60.5651 3.8 39.0 -171.5 1.1859 3.0 7.4 Cen X-3
186.9814 -62.6906 14.3 35.0 176.5 0.2932 0.8 10.1 GX 301-2
244.9851 -15.6238 1.1 37.4 55.9 6.5531 10.1 1.0 Sco X-1
256.1516 -37.7075 66.8 40.7 94.4 -0.1793 -0.2 11.3 4U 1700-377
221.1411 -32.2005 2.4 12.0 83.1 1.2623 4.8 ------ UNKNOWN
209.7744 -54.6829 1.9 24.5 156.9 1.7257 6.2 ------ UNKNOWN
210.9121 13.3790 2.7 43.8 -14.5 1.6935 4.3 ------ UNKNOWN
209.1278 29.1420 4.1 59.5 -17.8 4.6392 2.8 ------ UNKNOWN
129.1436 -52.9112 3.0 59.4 -156.3 8.0830 3.9 ------ UNKNOWN
163.4142 -22.1876 2.6 39.9 -108.7 4.0076 4.4 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.024000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.2693 -60.7163 4.1 39.0 -171.7 -0.0154 -2.8 5.8 Cen X-3
186.7884 -62.8963 7.3 35.2 176.5 -0.0086 -1.6 8.4 GX 301-2
245.0124 -15.6840 13.5 37.4 56.0 -0.0105 -0.9 3.2 Sco X-1
255.7895 -37.8112 4.3 40.4 94.5 -0.0659 -2.7 9.5 4U 1700-377
238.8278 -54.0535 1.1 32.8 125.9 0.1033 10.7 ------ UNKNOWN
213.2809 -18.3888 2.1 13.1 6.3 0.0213 5.4 ------ UNKNOWN
201.6586 -29.0016 2.8 5.1 -96.4 0.0155 4.1 ------ UNKNOWN
208.5095 27.3933 1.9 57.7 -18.4 0.0721 6.0 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
64.020590 342.290000
343.820000 428.340000
434.820000 461.890000
468.820000 491.200000
491.820000 551.030000
551.820000 591.340000
592.820000 623.410000
624.820000 962.824600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.4756 -60.4518 10.1 35.8 -138.9 -1.4789 -1.1 11.3 Cen X-3
186.7873 -62.7176 6.5 27.7 -139.5 1.7151 1.8 4.8 GX 301-2
244.9916 -15.6318 0.5 38.7 -0.9 23.1937 22.3 0.9 Sco X-1
255.9474 -37.8799 3.0 20.0 32.5 3.0528 3.8 2.8 4U 1700-377
256.3770 -36.4427 4.5 21.4 31.3 2.0369 2.6 3.1 GX 349+2
263.1621 -24.7751 5.1 34.4 31.0 2.4369 2.3 8.5 GX 1+4
264.6919 -44.4410 4.4 19.3 60.3 2.4332 2.6 2.3 4U 1735-44
270.4460 -25.1016 3.2 37.2 41.2 4.4144 3.7 8.9 GX 5-1
270.3128 -25.7687 2.4 36.6 41.6 5.8481 4.8 1.6 GRS 1758-258
274.1369 -14.1031 8.4 48.6 38.0 -3.5971 -1.4 8.6 GX 17+2
276.1144 -30.4009 18.4 35.7 53.2 -0.9182 -0.6 10.0 H1820-303
263.1489 -33.7766 8.9 26.5 39.6 1.2285 1.3 8.7 GX 354-0
230.3539 -8.1016 2.7 46.4 -22.1 6.2371 4.3 ------ UNKNOWN
166.1265 -45.8489 2.5 45.4 -121.3 16.3582 4.6 ------ UNKNOWN
Plot creation:
Thu Aug 26 12:57:02 EDT 2021