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
282.8223 -61.7666 0.0113 24.1001 -22.0078 0.1350164 17.015 TRIG_01017711
Foreground time interval of the image:
0.000 0.080 (delta_t = 0.080 [sec])
Background time interval of the image:
-239.152 0.000 (delta_t = 239.152 [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 0.000 sec. to 0.080 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.26431 ( -0.168782 0.169404 )
Norm@50keV : 8.74924E-02 ( -0.00988405 0.00987933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 94.43 using 59 bins.
Reduced chi-squared = 1.65667
# Null hypothesis probability of 1.34e-03 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.08 sec: 0.491529 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 6.97959e-08 ( -8.61728e-09 8.65536e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.080 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -6.23206E-02 ( -1.0106 0.814938 )
Epeak [keV] : 83.4907 ( -16.5429 48.9046 )
Norm@50keV : 0.380250 ( -0.222277 0.725262 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 85.89 using 59 bins.
Reduced chi-squared = 1.53375
# Null hypothesis probability of 6.26e-03 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.08 sec: 10.1512 ( -1.20979 1.2042 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.71166e-08 ( -9.12704e-09 9.12288e-09 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.080 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] : 17.7342 (-2.04379 2.33134)
R^2/D10^2 : 0.766778 (-0.262704 0.388243)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 90.47 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.15e-03 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.881e-09 7.776e-10
25- 50 1.775e-08 2.780e-09
50-150 4.035e-08 8.300e-09
15-150 6.198e-08 9.924e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-33.7883 -200)
Norm : 42.9565 (-4.89179 4.89179)
------------------------------------------------------------
#Fit statistic : Chi-Squared 98.94 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.82e-04 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.556e-09 3.513e-09
25- 50 1.646e-08 6.282e-09
50-150 3.610e-08 1.850e-08
15-150 6.111e-08 3.374e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.31418 (-4.19185 -6.31418)
R1^2/D10^2 : 6.87762 (-6.19782 36.7397)
kT2 [keV] : 20.7753 (-3.59737 -20.7753)
R2^2/D10^2 : 0.401504 (-0.398321 0.149121)
------------------------------------------------------------
#Fit statistic : Chi-Squared 85.97 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.78e-03 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.756e-09 2.965e-09
25- 50 1.691e-08 8.266e-09
50-150 4.356e-08 1.843e-08
15-150 6.623e-08 3.255e-08
Peak spectrum fit
Power-law model
Time interval is from -0.458 sec. to 0.542 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.20342 ( -0.355231 0.343599 )
Norm@50keV : 7.82079E-03 ( -0.00159538 0.00159378 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 53.77 using 59 bins.
Reduced chi-squared = 0.943333
# Null hypothesis probability of 5.97e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.918453 ( -0.194684 0.196117 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.92775e-08 ( -1.72663e-08 1.74456e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.458 sec. to 0.542 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.272751 ( -2.02798 1.17923 )
Epeak [keV] : 101.588 ( -39.7121 -101.588 )
Norm@50keV : 2.10990E-02 ( -0.021099 0.150115 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.56 using 59 bins.
Reduced chi-squared = 0.938571
# Null hypothesis probability of 6.06e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.881439 ( -0.202689 0.204261 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.52454e-08 ( -1.89439e-08 1.87681e-08 ) ergs/cm2
Band function
Time interval is from -0.458 sec. to 0.542 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] : 18.6283 (-4.23459 5.89767)
R^2/D10^2 : 5.43596E-02 (-0.0326118 0.0751735)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 54.75 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.60e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.734e-09 1.701e-09
25- 50 1.771e-08 6.722e-09
50-150 4.497e-08 1.943e-08
15-150 6.642e-08 2.338e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-74.0439 -200)
Norm : 3.85854 (-0.799133 0.799133)
------------------------------------------------------------
#Fit statistic : Chi-Squared 56.06 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.11e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.608e-09 5.675e-09
25- 50 1.848e-08 1.050e-08
50-150 4.054e-08 2.365e-08
15-150 6.863e-08 3.975e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.6465 (-10.7021 9.15259)
R1^2/D10^2 : 0.202400 (-0.195105 -0.195105)
kT2 [keV] : 32.7557 (-33.749 -33.749)
R2^2/D10^2 : 5.89001E-03 (-0.00525937 0.0610985)
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.18 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.83e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.694e-09 3.537e-09
25- 50 1.886e-08 1.231e-08
50-150 5.154e-08 2.784e-08
15-150 7.610e-08 3.819e-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: 1.26431 ( -0.168782 0.169404 )
Norm@50keV : 8.74924E-02 ( -0.00988405 0.00987933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 94.43 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.34e-03 with 57 degrees of freedom
Photon flux (15-150 keV) in 0.08 sec: 10.3726 ( -1.18673 1.18761 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.97882e-08 ( -8.61656e-09 8.65728e-09 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -6.23202E-02 ( -1.0106 0.814938 )
Epeak [keV] : 83.4907 ( -16.5429 48.9046 )
Norm@50keV : 0.380250 ( -0.222277 0.725262 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 85.89 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.26e-03 with 56 degrees of freedom
Photon flux (15-150 keV) in 0.08 sec: 10.1507 ( -1.2096 1.2042 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.71435e-08 ( -9.13064e-09 9.132e-09 ) 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) = 1.52e-08
S(50-100 keV) = 2.54e-08
T90 vs. Hardness ratio plot
T90 = 0.0640000104904175 sec.
Hardness ratio (energy fluence ratio) = 1.67105
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.98938
Count Ratio (50-100 keV) / (15-25 keV) = 2.17037
Mask shadow pattern
IMX = 4.147294229445333E-01, IMY = 1.676269428328477E-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:
-239.152000 0.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.7797 -62.7752 5.1 40.1 54.2 -1.6621 -2.3 3.4 GX 301-2
244.9723 -15.6537 0.6 30.2 179.7 7.6100 18.7 0.9 Sco X-1
256.0039 -37.8623 2.8 7.9 -144.7 1.1670 4.1 1.4 4U 1700-377
256.4138 -36.2726 4.6 9.5 -145.9 0.7342 2.5 9.1 GX 349+2
262.8171 -24.6987 8.6 22.2 -140.3 0.4486 1.3 10.8 GX 1+4
264.5768 -44.5185 6.7 8.7 -76.6 0.5923 1.7 8.2 4U 1735-44
268.1665 -1.3550 0.0 46.0 -143.9 -0.2970 -0.4 13.4 SW J1753.5-0127
270.2191 -25.0379 3.2 24.8 -124.6 1.3762 3.6 4.3 GX 5-1
270.3409 -25.6631 4.6 24.3 -123.6 0.9425 2.5 5.2 GRS 1758-258
273.9742 -13.9404 4.7 36.3 -128.9 1.4175 2.5 6.0 GX 17+2
275.8812 -30.4020 17.4 23.6 -106.9 0.2649 0.7 3.1 H1820-303
285.0536 -24.7631 4.9 33.3 -102.9 -1.3457 -2.4 9.5 HT1900.1-2455
262.7693 -33.7759 7.0 14.0 -127.7 -0.4877 -1.7 11.5 GX 354-0
201.4367 -65.9499 2.1 34.0 48.4 2.9963 5.5 ------ UNKNOWN
279.0162 -3.3377 1.9 48.0 -129.0 8.1121 6.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.080000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.6567 -62.7760 936.7 40.2 54.2 -0.0002 -0.0 0.3 GX 301-2
244.8967 -15.8068 9.8 30.1 179.5 -0.0104 -1.2 11.1 Sco X-1
256.0164 -37.9847 26.6 7.8 -144.3 -0.0031 -0.4 8.6 4U 1700-377
256.2259 -36.3791 9.6 9.3 -146.6 0.0085 1.2 10.5 GX 349+2
262.7973 -24.6548 0.0 22.3 -140.3 0.0077 1.0 12.8 GX 1+4
264.6229 -44.3252 9.4 8.7 -77.8 0.0093 1.2 9.1 4U 1735-44
268.2861 -1.4938 4.2 45.9 -143.7 0.0452 2.7 5.5 SW J1753.5-0127
270.3383 -25.2112 15.7 24.7 -124.2 -0.0067 -0.7 8.5 GX 5-1
270.1186 -25.6663 4.2 24.2 -124.0 0.0255 2.9 11.0 GRS 1758-258
273.9316 -13.9765 4.6 36.2 -128.9 -0.0305 -2.5 5.6 GX 17+2
276.1592 -30.4187 0.0 23.8 -106.5 -0.0187 -2.1 12.5 H1820-303
285.1902 -24.9443 6.0 33.3 -102.5 0.0282 1.9 8.5 HT1900.1-2455
263.0928 -33.6494 8.9 14.2 -127.0 0.0097 1.3 12.3 GX 354-0
43.8006 -78.1638 2.4 55.4 7.1 0.1652 4.8 ------ UNKNOWN
282.8224 -61.7666 0.7 24.1 -22.0 0.1350 17.0 ------ UNKNOWN
259.3638 -22.6049 3.2 23.4 -149.6 0.0268 3.6 ------ UNKNOWN
284.2661 -22.9966 2.0 34.1 -106.0 0.0822 5.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
464.048600 925.448590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5735 35.4634 4.0 15.5 -7.7 1.2685 2.9 9.2 Her X-1
288.7439 10.7662 7.3 38.7 -91.4 -2.7242 -1.6 11.2 GRS 1915+105
299.5719 35.1312 3.9 24.9 -135.6 1.6120 3.0 4.3 Cyg X-1
308.0932 40.9455 1.5 28.0 -154.4 4.0823 7.4 0.9 Cyg X-3
326.2697 38.2922 8.1 41.7 -161.1 1.1730 1.4 4.9 Cyg X-2
290.4387 64.9662 2.5 22.1 142.7 2.3371 4.6 ------ UNKNOWN
252.0286 2.5694 2.5 46.0 -35.7 4.4162 4.7 ------ UNKNOWN
330.6812 20.7009 3.6 55.2 -145.0 8.6550 3.2 ------ UNKNOWN
Plot creation:
Sat Jul 30 07:18:53 EDT 2022