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
244.7712 -15.6361 0.0484 28.5 -108.1 2.8266 4.0 TRIG_01219542
------------------------------------------
Foreground time interval of the image:
-189.476 -97.410 (delta_t = 92.066 [sec])
-96.000 -13.050 (delta_t = 82.950 [sec])
-11.999 38.500 (delta_t = 50.500 [sec])
40.000 72.101 (delta_t = 32.101 [sec])
Background time interval of the image:
-239.000 -189.476 (delta_t = 49.524 [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
-189.476000 -97.410000
-96.000000 -13.050000
-11.999500 38.500000
40.000000 152.744000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.02293 ( -0.339118 0.342529 )
Norm@50keV : 1.13494E-04 ( -3.04638e-05 3.90722e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.58 using 59 PHA bins.
# Reduced chi-squared = 0.9752 for 57 degrees of freedom
# Null hypothesis probability = 5.283330e-01
Photon flux (15-150 keV) in 338.3 sec: 0.477950 ( -0.0410766 0.0414305 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.85075e-06 ( -3.79417e-07 3.81995e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-189.476000 -97.410000
-96.000000 -13.050000
-11.999500 38.500000
40.000000 152.744000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.23341 ( )
Epeak [keV] : 3.43423 ( )
Norm@50keV : 0.861413 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.98 using 59 PHA bins.
# Reduced chi-squared = 0.8746 for 56 degrees of freedom
# Null hypothesis probability = 7.355621e-01
Photon flux (15-150 keV) in 338.3 sec: 0.459682 ( -0.046863 0.045779 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.62179e-06 ( -4.33295e-07 4.23382e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-189.476000 -97.410000
-96.000000 -13.050000
-11.999500 38.500000
40.000000 152.744000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -7.21981 ( 4.47547 7.21981 )
beta : -6.05977 ( -0.315785 0.36906 )
Epeak [keV] : 316.694 ( -316.694 -316.694 )
Norm@50keV : 1.49075E-02 ( -0.00384442 0.00563012 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.62 using 59 PHA bins.
# Reduced chi-squared = 1.011 for 55 degrees of freedom
# Null hypothesis probability = 4.513450e-01
Photon flux (15-150 keV) in 338.3 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] : 2.65783 (-0.162236 0.180174)
R^2/D10^2 : 143.728 (-58.7107 97.7343)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.17 using 59 PHA bins.
# Reduced chi-squared = 0.8801 for 57 degrees of freedom
# Null hypothesis probability = 7.272503e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.114e-06 6.812e-07
25- 50 3.849e-07 7.065e-08
50-150 2.175e-10 1.256e-10
15-150 4.499e-06 6.749e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 4.65058 (-0.41273 0.48218)
Norm : 140.013 (-49.1347 75.7659)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.202e-06 5.910e-07
25- 50 4.487e-07 8.156e-08
50-150 1.593e-09 8.999e-10
15-150 4.653e-06 7.290e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.64951 (-2.66523 0.16442)
R1^2/D10^2 : 147.058 (-49.5785 1126.92)
kT2 [keV] : 199.976 (-199.976 -199.976)
R2^2/D10^2 : 3.76477E-06 (-3.76477e-06 -3.76477e-06)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.088e-06 6.174e-07
25- 50 4.017e-07 7.791e-08
50-150 3.502e-07 3.493e-08
15-150 4.840e-06 6.999e-07
Peak spectrum fit
Power-law model
Time interval is from 65.200 sec. to 66.200 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.31077 ( -0.808614 1.07372 )
Norm@50keV : 1.23416E-03 ( -0.00123468 0.00145647 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.22 using 59 PHA bins.
# Reduced chi-squared = 0.8108 for 57 degrees of freedom
# Null hypothesis probability = 8.457211e-01
Photon flux (15-150 keV) in 1 sec: 1.00309 ( -0.249797 0.252032 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.43851e-08 ( -9.9992e-09 1.11266e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 65.200 sec. to 66.200 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.24789E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.88 using 59 PHA bins.
# Reduced chi-squared = 1.426 for 56 degrees of freedom
# Null hypothesis probability = 1.976124e-02
Photon flux (15-150 keV) in 1 sec: 1.01184 ( -0.239168 0.24072 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.2189e-08 ( -8.3103e-09 9.3378e-09 ) ergs/cm2
Band function
Time interval is from 65.200 sec. to 66.200 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -8.13039 ( 2.73174 8.13039 )
beta : -4.31058 ( -1.07413 0.809537 )
Epeak [keV] : 8.81641 ( -8.81641 -8.81641 )
Norm@50keV : 0.167772 ( -0.167799 0.197966 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.22 using 59 PHA bins.
# Reduced chi-squared = 0.8403 for 55 degrees of freedom
# Null hypothesis probability = 7.945319e-01
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] : 3.37223 (-0.718454 0.882238)
R^2/D10^2 : 70.6312 (-70.6312 231.324)
(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 2.635e-08 1.513e-08
25- 50 5.679e-09 3.751e-09
50-150 2.238e-11 2.535e-11
15-150 3.205e-08 1.832e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.51707 (-2.48584 4.10284)
Norm : 67.7062 (-41.3512 140.221)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.543e-08 1.431e-08
25- 50 7.135e-09 4.687e-09
50-150 2.038e-10 2.289e-10
15-150 3.277e-08 1.895e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.36787 (-0.718434 0.882257)
R1^2/D10^2 : 71.0946 (-51.206 231.313)
kT2 [keV] : 198.705 (-198.929 -198.929)
R2^2/D10^2 : 5.66253E-06 (-5.7459e-06 0.016543)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: 5.89767 ( -0.381439 0.387355 )
Norm@50keV : 1.19383E-04 ( -3.6236e-05 4.8315e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.48 using 59 PHA bins.
# Reduced chi-squared = 1.026 for 57 degrees of freedom
# Null hypothesis probability = 4.207920e-01
Photon flux (15-150 keV) in 257.6 sec: 0.443417 ( -0.040095 0.0403415 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.44859e-06 ( -2.86371e-07 2.875e-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 : 2.46898E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 354.84 using 59 PHA bins.
# Reduced chi-squared = 6.3365 for 56 degrees of freedom
# Null hypothesis probability = 5.062788e-45
Photon flux (15-150 keV) in 257.6 sec: 0.430958 ( -0.044696 0.043688 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.30192e-06 ( -3.18033e-07 3.11567e-07 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -5.82779 ( 3.73667 5.82779 )
beta : -5.94394 ( -0.353282 0.420128 )
Epeak [keV] : 329.904 ( -329.904 -329.904 )
Norm@50keV : 1.55314E-02 ( -0.0045119 0.00701652 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.52 using 59 PHA bins.
# Reduced chi-squared = 1.064 for 55 degrees of freedom
# Null hypothesis probability = 3.474464e-01
Photon flux (15-150 keV) in 257.6 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) = 5.83e-07
S(50-100 keV) = 3.59e-08
T90 vs. Hardness ratio plot
T90 = 261.455999970436 sec.
Hardness ratio (energy fluence ratio) = 0.061578
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.0952114
Count Ratio (50-100 keV) / (15-25 keV) = 0.0146641
Mask shadow pattern
IMX = -1.693732262333176E-01, IMY = 5.167002180456879E-01
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:
-239.000000 -189.476000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.6001 -62.6775 11.5 54.2 -12.0 -0.3306 -1.0 5.8 GX 301-2
244.9539 -15.7747 0.9 28.7 -107.9 2.2332 13.2 8.2 Sco X-1
191.6768 22.3694 2.7 42.0 118.1 2.2002 4.4 ------ UNKNOWN
187.5432 8.5380 2.2 34.9 97.9 1.1331 5.2 ------ UNKNOWN
188.7023 -65.0160 2.3 55.6 -14.6 1.9483 5.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-189.476000 -97.410000
-96.000000 -13.050000
-11.999500 38.500000
40.000000 72.100600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
186.9172 -62.7570 5.0 54.2 -12.3 -3.7671 -2.3 7.2 GX 301-2
245.0779 -15.8250 0.0 28.8 -107.8 -3.1926 -4.4 12.5 Sco X-1
166.8735 -30.4668 2.0 48.2 32.2 10.4120 5.9 ------ UNKNOWN
235.5216 -13.0199 2.5 19.5 -114.2 2.3484 4.6 ------ UNKNOWN
256.2058 -23.4941 2.1 40.1 -96.2 10.8485 5.6 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
142.000580 167.250000
168.000000 363.050400
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9313 -15.7695 0.4 0.1 -143.0 15.4043 32.5 8.2 Sco X-1
254.4853 35.4152 3.8 52.0 -178.1 4.1158 3.0 4.6 Her X-1
255.8277 -37.6956 5.0 23.9 -29.8 1.1451 2.3 11.7 4U 1700-377
256.6092 -36.4494 4.5 23.1 -32.6 -1.2296 -2.6 8.5 GX 349+2
262.9724 -24.7007 54.0 19.1 -67.4 0.1225 0.2 3.3 GX 1+4
264.8429 -44.4449 7.5 33.2 -34.4 0.9414 1.5 4.3 4U 1735-44
268.3563 -1.4672 19.1 27.2 -127.5 0.3560 0.6 1.1 SW J1753.5-0127
270.2495 -25.0937 6.2 25.5 -72.5 1.1068 1.9 2.1 GX 5-1
270.3825 -25.6023 6.8 25.7 -71.5 -1.0139 -1.7 9.5 GRS 1758-258
274.0512 -13.9920 21.8 28.2 -97.8 0.3682 0.5 3.8 GX 17+2
276.0973 -30.4781 0.0 32.1 -65.3 -0.9665 -1.3 11.1 H1820-303
285.2075 -25.0140 0.0 38.7 -77.6 -1.9505 -1.4 10.9 HT1900.1-2455
263.0519 -33.6894 3.5 24.2 -47.2 1.9340 3.3 9.3 GX 354-0
252.8377 28.6256 2.8 45.1 -178.2 4.0917 4.1 ------ UNKNOWN
254.1377 -64.9011 2.3 49.5 -13.2 4.4453 4.9 ------ UNKNOWN
280.9042 20.0057 2.0 50.4 -142.2 8.4795 5.7 ------ UNKNOWN
Plot creation:
Tue Mar 12 06:40:44 EDT 2024