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
261.9333 -16.2086 0.0045 26.8 -162.9 17.7837 43.3 TRIG_01186982
------------------------------------------
Foreground time interval of the image:
-12.899 18.000 (delta_t = 30.899 [sec])
19.000 19.360 (delta_t = 0.360 [sec])
24.000 177.284 (delta_t = 153.284 [sec])
Background time interval of the image:
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 192.000000
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 192.000000
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 192.000000
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
-60.372000 -56.510000
-40.000000 18.000000
19.000000 19.360000
24.000000 177.284000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.04066 ( -0.0433835 0.0435949 )
Norm@50keV : 5.57787E-03 ( -0.000128681 0.000128489 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 82.12 using 59 PHA bins.
# Reduced chi-squared = 1.441 for 57 degrees of freedom
# Null hypothesis probability = 1.635474e-02
Photon flux (15-150 keV) in 215.5 sec: 0.852716 ( -0.0223993 0.0225111 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.11128e-05 ( -2.48885e-07 2.48952e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-60.372000 -56.510000
-40.000000 18.000000
19.000000 19.360000
24.000000 177.284000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29636 ( -0.212078 0.202564 )
Epeak [keV] : 46.6361 ( -3.61888 3.41415 )
Norm@50keV : 1.30228E-02 ( -0.00263707 0.00350272 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.09 using 59 PHA bins.
# Reduced chi-squared = 0.6802 for 56 degrees of freedom
# Null hypothesis probability = 9.679125e-01
Photon flux (15-150 keV) in 215.5 sec: 0.798133 ( -0.025728 0.025929 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.04466e-05 ( -2.99049e-07 3.00213e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-60.372000 -56.510000
-40.000000 18.000000
19.000000 19.360000
24.000000 177.284000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.12701 ( -0.286196 0.944539 )
beta : -2.56054 ( 2.56046 0.274456 )
Epeak [keV] : 44.9624 ( -4.15059 3.79246 )
Norm@50keV : 1.62770E-02 ( -0.00476813 0.0498552 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 35.39 using 59 PHA bins.
# Reduced chi-squared = 0.6435 for 55 degrees of freedom
# Null hypothesis probability = 9.816032e-01
Photon flux (15-150 keV) in 215.5 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.04536e-05 ( -1.04521e-05 -2.94157e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 12.2651 ( )
R^2/D10^2 : 0.167341 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 333.24 using 59 PHA bins.
# Reduced chi-squared = 5.8464 for 57 degrees of freedom
# Null hypothesis probability = 1.132399e-40
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.149e-06 4.967e-08
25- 50 3.709e-06 1.013e-07
50-150 3.404e-06 1.465e-07
15-150 8.262e-06 1.918e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 73.3912 (-4.86801 5.43149)
Norm : 3.96165 (-0.164316 0.172319)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.201e-06 8.146e-08
25- 50 3.545e-06 9.159e-08
50-150 4.714e-06 2.144e-07
15-150 1.046e-05 2.370e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.77068 (-0.596432 0.627754)
R1^2/D10^2 : 1.09055 (-0.284503 0.426393)
kT2 [keV] : 19.9249 (-1.6333 2.11891)
R2^2/D10^2 : 1.78378E-02 (-0.00640759 0.00833332)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.964e-06 1.548e-07
25- 50 3.606e-06 1.638e-07
50-150 4.620e-06 3.620e-07
15-150 1.019e-05 4.622e-07
Peak spectrum fit
Power-law model
Time interval is from -58.552 sec. to -57.552 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.17524 ( -0.540021 0.687979 )
Norm@50keV : 7.03095E-03 ( -0.00306933 0.00286775 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.48 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.572649e-01
Photon flux (15-150 keV) in 1 sec: 1.14906 ( -0.341541 0.341541 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.58845e-08 ( -2.36175e-08 2.50897e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -58.552 sec. to -57.552 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.62946 ( -3.00977 0.461759 )
Epeak [keV] : 28.2415 ( )
Norm@50keV : 1.46606E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.26 using 59 PHA bins.
# Reduced chi-squared = 1.022 for 56 degrees of freedom
# Null hypothesis probability = 4.283155e-01
Photon flux (15-150 keV) in 1 sec: 1.13469 ( -0.343294 0.3442 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.33697e-08 ( -2.3825e-08 2.65672e-08 ) ergs/cm2
Band function
Time interval is from -58.552 sec. to -57.552 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.63538 ( -0.522747 1.49339 )
beta : -10.0000 ( 10 0 )
Epeak [keV] : 28.2184 ( -23.6304 -28.2175 )
Norm@50keV : 1.45134E-02 ( -0.00891095 1.20538 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.26 using 59 PHA bins.
# Reduced chi-squared = 1.041 for 55 degrees of freedom
# Null hypothesis probability = 3.914382e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.2092e-15 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.72170 (-3.23313 4.72368)
R^2/D10^2 : 0.892587 (-0.882857 4.67797)
(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 1.299e-08 7.955e-09
25- 50 2.628e-08 1.634e-08
50-150 9.098e-09 6.905e-09
15-150 4.837e-08 3.064e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 52.3315 (-29.2002 105.673)
Norm : 6.40044 (-2.59823 5.33134)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.581e-08 8.387e-09
25- 50 2.307e-08 1.252e-08
50-150 2.337e-08 1.800e-08
15-150 6.224e-08 4.006e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.08242 (-5.13324 4.05346)
R1^2/D10^2 : 5.58188 (-4.84316 -5.46738)
kT2 [keV] : 18.0170 (-18.1504 63.7411)
R2^2/D10^2 : 3.66155E-02 (-0.0357622 0.838852)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.686e-08 1.005e-08
25- 50 2.086e-08 1.093e-08
50-150 2.638e-08 1.875e-08
15-150 6.411e-08 3.493e-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: 2.04619 ( -0.0446092 0.0448464 )
Norm@50keV : 5.55017E-03 ( -0.000132638 0.000132412 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.91 using 59 PHA bins.
# Reduced chi-squared = 1.402 for 57 degrees of freedom
# Null hypothesis probability = 2.429720e-02
Photon flux (15-150 keV) in 184.5 sec: 0.850711 ( -0.0228414 0.0229527 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.4707e-06 ( -2.19007e-07 2.19118e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.26211 ( -0.22198 0.211471 )
Epeak [keV] : 46.0254 ( -3.54198 3.32405 )
Norm@50keV : 1.36471E-02 ( -0.00289201 0.00390317 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 34.73 using 59 PHA bins.
# Reduced chi-squared = 0.6202 for 56 degrees of freedom
# Null hypothesis probability = 9.885874e-01
Photon flux (15-150 keV) in 184.5 sec: 0.794705 ( -0.0262 0.026408 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.87102e-06 ( -2.6365e-07 2.6496e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.03810 ( -0.314693 0.687022 )
beta : -2.55755 ( -0.547217 0.236884 )
Epeak [keV] : 44.0549 ( -5.77921 3.68848 )
Norm@50keV : 1.83772E-02 ( -0.00590487 0.0315099 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 31.09 using 59 PHA bins.
# Reduced chi-squared = 0.5653 for 55 degrees of freedom
# Null hypothesis probability = 9.961543e-01
Photon flux (15-150 keV) in 184.5 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 8.88364e-06 ( -8.88235e-06 -2.58503e-07 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 3.38e-06
S(50-100 keV) = 3.29e-06
T90 vs. Hardness ratio plot
T90 = 182.291999936104 sec.
Hardness ratio (energy fluence ratio) = 0.973373
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.19252
Count Ratio (50-100 keV) / (15-25 keV) = 0.613141
Mask shadow pattern
IMX = -4.824677617793685E-01, IMY = 1.487382435504627E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 192.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 192.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 192.000000
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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-12.899400 18.000000
19.000000 19.360000
24.000000 177.284000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9916 -15.6286 1.8 37.5 -139.4 3.5234 6.4 1.0 Sco X-1
254.4289 35.3254 23.4 33.9 -42.8 0.2383 0.5 1.7 Her X-1
256.0569 -37.8674 7.2 48.4 -171.7 1.3561 1.6 3.6 4U 1700-377
256.2717 -36.5343 0.0 47.2 -171.1 0.7180 1.0 10.3 GX 349+2
262.9688 -24.6040 4.2 33.9 -171.9 -1.1854 -2.7 8.8 GX 1+4
264.5793 -44.5184 8.1 52.6 177.6 1.6504 1.4 8.1 4U 1735-44
268.3386 -1.5982 31.4 11.1 -154.3 -0.1331 -0.4 8.9 SW J1753.5-0127
270.3499 -25.2451 6.2 32.8 176.1 -0.8500 -1.9 10.6 GX 5-1
270.4572 -25.6996 6.1 33.2 175.8 0.9334 2.0 8.8 GRS 1758-258
273.8308 -14.1553 0.0 21.4 171.5 -0.4846 -1.3 12.4 GX 17+2
275.9410 -30.2570 3.8 37.5 167.0 -1.5764 -3.1 6.7 H1820-303
284.9323 -24.7917 25.5 33.4 151.8 -0.2610 -0.5 9.6 HT1900.1-2455
288.8989 10.9695 4.2 14.2 61.9 1.0464 2.8 6.1 GRS 1915+105
299.6012 35.2109 1.3 35.9 23.6 5.7242 9.1 0.8 Cyg X-1
308.0238 41.1219 8.3 44.8 23.8 -1.1247 -1.4 10.9 Cyg X-3
262.8915 -33.9426 8.2 42.7 -176.9 -0.8607 -1.4 8.1 GX 354-0
313.3291 -7.2691 2.9 40.8 98.2 5.3990 4.0 ------ UNKNOWN
299.4794 45.1708 2.2 43.5 13.3 3.7051 5.2 ------ UNKNOWN
294.1038 44.6918 2.3 41.0 8.9 3.1676 5.0 ------ UNKNOWN
261.9334 -16.2086 0.3 26.8 -162.9 17.7830 43.3 ------ UNKNOWN
238.9278 49.1553 2.8 51.7 -41.2 7.9620 4.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
Plot creation:
Fri Aug 25 17:09:36 EDT 2023