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
245.3426 -17.3512 0.0295 0.1 39.3 -1.5873 -6.5 TRIG_01186296
------------------------------------------
Foreground time interval of the image:
-39.000 -34.640 (delta_t = 4.360 [sec])
-29.000 -15.740 (delta_t = 13.260 [sec])
-15.000 121.000 (delta_t = 136.000 [sec])
Background time interval of the image:
-119.000 -39.000 (delta_t = 80.000 [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 64.000000
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 64.000000
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 64.000000
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
Multiple GTIs in the spectrum
tstart tstop
-39.000000 -34.640000
-29.000000 -15.740000
-15.000000 121.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.48110 ( -0.262707 0.261284 )
Norm@50keV : 1.25966E-04 ( -2.55248e-05 3.07712e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 80.44 using 59 PHA bins.
# Reduced chi-squared = 1.411 for 57 degrees of freedom
# Null hypothesis probability = 2.213014e-02
Photon flux (15-150 keV) in 153.6 sec: 0.843952 ( -0.065664 0.0665147 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.8102e-06 ( -2.71341e-07 2.74204e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-39.000000 -34.640000
-29.000000 -15.740000
-15.000000 121.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.29829E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 712.27 using 59 PHA bins.
# Reduced chi-squared = 12.719 for 56 degrees of freedom
# Null hypothesis probability = 1.675248e-114
Photon flux (15-150 keV) in 153.6 sec: 0.791882 ( -0.07855 0.076798 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.5802e-06 ( -3.24142e-07 3.16646e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-39.000000 -34.640000
-29.000000 -15.740000
-15.000000 121.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.60859 ( )
beta : -9.02363 ( )
Epeak [keV] : 3.88690 ( )
Norm@50keV : 4.35784E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 244.60 using 59 PHA bins.
# Reduced chi-squared = 4.4473 for 55 degrees of freedom
# Null hypothesis probability = 9.725115e-26
Photon flux (15-150 keV) in 153.6 sec: 0.802350 ( 6.19765 -0.08017 ) 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] : 2.58699 (-0.119567 0.130732)
R^2/D10^2 : 295.425 (-102.636 153.41)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.78 using 59 PHA bins.
# Reduced chi-squared = 1.189 for 57 degrees of freedom
# Null hypothesis probability = 1.554410e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.180e-06 3.971e-07
25- 50 2.679e-07 3.226e-08
50-150 1.177e-10 5.850e-11
15-150 3.448e-06 3.817e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.34409 (-0.282344 0.32024)
Norm : 317.122 (-94.5753 132.387)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.314e-06 3.924e-07
25- 50 2.993e-07 3.556e-08
50-150 7.256e-10 3.318e-10
15-150 3.614e-06 3.878e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.57716 (-0.123655 0.127895)
R1^2/D10^2 : 304.136 (-105.839 188.466)
kT2 [keV] : 48.5012 (-45.0725 -45.0726)
R2^2/D10^2 : 4.16153E-05 (-5.41074e-05 -5.41797e-05)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.188e-06 3.786e-07
25- 50 2.765e-07 3.464e-08
50-150 1.431e-07 9.136e-08
15-150 3.608e-06 4.815e-07
Peak spectrum fit
Power-law model
Time interval is from 96.500 sec. to 97.500 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.52971 ( -0.840558 1.00152 )
Norm@50keV : 3.37965E-04 ( -0.000337965 0.000453862 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 36.46 using 59 PHA bins.
# Reduced chi-squared = 0.6396 for 57 degrees of freedom
# Null hypothesis probability = 9.844622e-01
Photon flux (15-150 keV) in 1 sec: 0.871444 ( -0.160766 0.161024 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.6866e-08 ( -5.48011e-09 5.69194e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 96.500 sec. to 97.500 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 7.74154E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 106.33 using 59 PHA bins.
# Reduced chi-squared = 1.8988 for 56 degrees of freedom
# Null hypothesis probability = 5.733635e-05
Photon flux (15-150 keV) in 1 sec: 0.874942 ( -0.157837 0.157458 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.61463e-08 ( -5.048e-09 5.6211e-09 ) ergs/cm2
Band function
Time interval is from 96.500 sec. to 97.500 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.28029 ( 1.25982 1.25982 )
beta : -6.39066 ( 8.82927 18.6929 )
Epeak [keV] : 11.5344 ( -3.38592 6.03919 )
Norm@50keV : 1.56159E+05 ( -156206 1.21924e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 35.66 using 59 PHA bins.
# Reduced chi-squared = 0.6483 for 55 degrees of freedom
# Null hypothesis probability = 9.800197e-01
Photon flux (15-150 keV) in 1 sec: 0.802350 ( 6.19765 -0.08017 ) 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] : 2.53613 (-0.412724 0.499875)
R^2/D10^2 : 393.426 (-393.426 1097.53)
(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 2.394e-08 1.314e-08
25- 50 1.864e-09 1.132e-09
50-150 6.772e-13 7.650e-13
15-150 2.580e-08 1.453e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.74193 (-1.13668 1.6221)
Norm : 246.315 (-154.966 506.122)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.350e-08 1.169e-08
25- 50 2.627e-09 1.635e-09
50-150 1.035e-11 1.129e-11
15-150 2.613e-08 1.310e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.37584E-04 (0.000221041 -0.000137584)
R1^2/D10^2 : 3.41360E+05 (-341360 -341360)
kT2 [keV] : 2.53612 (-0.412719 0.499882)
R2^2/D10^2 : 393.433 (-393.433 1097.53)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.212e-08 1.777e-03
25- 50 4.713e-09 1.278e-02
50-150 1.811e-11 3.247e-01
15-150 2.685e-08 3.469e-01
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: 6.48110 ( -0.262707 0.261284 )
Norm@50keV : 1.25966E-04 ( -2.55248e-05 3.07712e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 80.44 using 59 PHA bins.
# Reduced chi-squared = 1.411 for 57 degrees of freedom
# Null hypothesis probability = 2.213014e-02
Photon flux (15-150 keV) in 153.6 sec: 0.843952 ( -0.065664 0.0665147 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.8102e-06 ( -2.71341e-07 2.74204e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.29829E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 712.27 using 59 PHA bins.
# Reduced chi-squared = 12.719 for 56 degrees of freedom
# Null hypothesis probability = 1.675248e-114
Photon flux (15-150 keV) in 153.6 sec: 0.791882 ( -0.07855 0.076798 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.5802e-06 ( -3.24142e-07 3.16646e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.60859 ( )
beta : -9.02363 ( )
Epeak [keV] : 3.88690 ( )
Norm@50keV : 4.35784E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 244.60 using 59 PHA bins.
# Reduced chi-squared = 4.4473 for 55 degrees of freedom
# Null hypothesis probability = 9.725115e-26
Photon flux (15-150 keV) in 153.6 sec: 0.802350 ( 6.19765 -0.08017 ) 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) = 3.69e-07
S(50-100 keV) = 1.65e-08
T90 vs. Hardness ratio plot
T90 = 80 sec.
Hardness ratio (energy fluence ratio) = 0.0447154
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0828496
Count Ratio (50-100 keV) / (15-25 keV) = 0.00298098
Mask shadow pattern
IMX = 1.108772430368263E-03, IMY = -9.073002042644287E-04
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
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:
-119.000000 -39.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.8529 -15.7613 6.6 1.7 -24.0 -0.3188 -1.7 10.3 Sco X-1
254.3845 35.4822 9.4 53.6 -0.8 -0.6401 -1.2 9.1 Her X-1
255.8051 -37.9837 8.1 22.6 147.9 -0.2710 -1.4 12.0 4U 1700-377
256.2981 -36.5641 15.7 21.5 145.2 0.1430 0.7 10.7 GX 349+2
263.0746 -24.8917 4.9 18.2 107.3 -0.4957 -2.3 9.5 GX 1+4
264.5922 -44.6016 4.3 31.7 143.3 0.6938 2.7 11.1 4U 1735-44
268.2248 -1.4670 4.7 27.6 47.2 -0.5806 -2.4 8.6 SW J1753.5-0127
270.2680 -25.2164 5.7 24.5 102.8 -0.5091 -2.1 8.3 GX 5-1
270.3648 -25.6053 8.3 24.7 103.7 0.3474 1.4 8.9 GRS 1758-258
273.8538 -14.1460 34.7 27.7 77.3 -0.0908 -0.3 11.0 GX 17+2
275.7949 -30.4810 15.4 30.7 110.9 0.2210 0.7 9.6 H1820-303
284.9408 -24.8107 17.0 37.6 98.2 -0.3155 -0.7 8.4 HT1900.1-2455
262.8860 -33.7679 9.8 22.7 129.4 0.2508 1.2 6.5 GX 354-0
251.9614 -51.4369 2.4 34.4 162.6 1.2603 4.9 ------ UNKNOWN
245.3065 -17.4161 0.3 0.0 102.1 6.9647 40.4 ------ UNKNOWN
212.9302 -59.3285 2.5 48.0 -168.5 1.5887 4.6 ------ UNKNOWN
216.3558 -52.6594 2.1 41.9 -164.0 1.4180 5.4 ------ UNKNOWN
225.4659 -31.1291 3.1 22.6 -141.1 0.7078 3.8 ------ UNKNOWN
218.1691 16.2842 2.7 43.0 -49.9 1.7576 4.2 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-39.000000 -34.640000
-29.000000 -15.740000
-15.000000 121.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0026 -15.7965 24.4 1.6 -19.4 0.1195 0.5 9.5 Sco X-1
254.4736 35.3997 4.4 53.5 -0.7 -2.3366 -2.7 3.5 Her X-1
255.8222 -37.7380 5.8 22.3 147.6 -0.5445 -2.0 10.1 4U 1700-377
256.6084 -36.3164 4.7 21.4 144.3 0.6711 2.5 10.5 GX 349+2
262.8562 -24.6035 5.6 17.9 106.7 -0.6075 -2.1 11.9 GX 1+4
264.9246 -44.5459 7.5 31.8 142.9 -0.5890 -1.5 9.7 4U 1735-44
268.5160 -1.3350 0.0 27.9 47.3 -0.8263 -2.3 11.3 SW J1753.5-0127
270.1768 -25.0145 7.8 24.4 102.4 -0.5094 -1.5 7.0 GX 5-1
270.3193 -25.6757 5.7 24.7 103.9 -0.7151 -2.0 4.1 GRS 1758-258
274.1601 -13.9873 23.6 28.0 77.1 0.1901 0.5 9.5 GX 17+2
275.7539 -30.4948 5.2 30.6 110.9 -0.9307 -2.2 11.7 H1820-303
285.1925 -24.7828 0.0 37.8 98.2 0.9921 1.3 11.9 HT1900.1-2455
262.9448 -33.6916 5.6 22.7 129.1 -0.6150 -2.1 8.9 GX 354-0
Post-slew image of 15-350 keV band
Time interval of the image:
-60.000000 -34.640000
-29.000000 -15.740000
-10.000000 63.091400
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
245.0413 -15.6466 17.5 1.8 -17.4 -0.1488 -0.7 3.6 Sco X-1
254.5120 35.3341 4.6 53.5 -0.7 -1.5179 -2.5 2.7 Her X-1
255.7903 -37.9390 10.2 22.5 147.9 -0.2643 -1.1 10.9 4U 1700-377
256.2371 -36.5586 124.9 21.5 145.3 -0.0220 -0.1 12.6 GX 349+2
263.0378 -24.7470 5.4 18.1 106.9 -0.5661 -2.1 1.6 GX 1+4
264.6316 -44.5993 3.3 31.7 143.3 1.1150 3.5 10.1 4U 1735-44
268.3397 -1.5907 13.8 27.6 47.6 0.2578 0.8 8.5 SW J1753.5-0127
270.1146 -25.1988 6.0 24.4 102.9 -0.5468 -1.9 11.7 GX 5-1
270.2350 -25.8809 11.2 24.6 104.4 -0.2913 -1.0 9.0 GRS 1758-258
274.1595 -14.0461 10.7 28.0 77.2 0.3614 1.1 9.0 GX 17+2
276.0765 -30.2262 68.1 30.8 110.3 0.0647 0.2 11.5 H1820-303
285.1925 -24.7828 0.0 37.8 98.2 1.1130 2.1 11.9 HT1900.1-2455
262.7997 -33.9780 0.0 22.8 129.9 0.2695 1.0 12.8 GX 354-0
245.3064 -17.4237 0.3 0.0 114.6 9.0791 41.4 ------ UNKNOWN
205.5132 -69.0174 2.3 57.2 -174.2 4.4720 5.0 ------ UNKNOWN
209.3013 -23.3582 2.3 34.2 -116.2 1.7978 5.1 ------ UNKNOWN
217.8114 24.9179 3.2 50.1 -43.1 3.4939 3.6 ------ UNKNOWN
203.1184 -12.2323 3.9 41.0 -98.8 2.8340 3.0 ------ UNKNOWN
Plot creation:
Mon Aug 21 20:26:44 EDT 2023