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
16.0974 -12.1653 0.0043 35.4 -171.2 3.6828 44.3 TRIG_01287821
------------------------------------------
Foreground time interval of the image:
-6.600 9.233 (delta_t = 15.833 [sec])
Background time interval of the image:
-239.368 -234.738 (delta_t = 4.630 [sec])
-229.368 -228.188 (delta_t = 1.180 [sec])
-215.368 -209.468 (delta_t = 5.900 [sec])
-208.368 -196.888 (delta_t = 11.480 [sec])
-185.368 -184.008 (delta_t = 1.360 [sec])
-117.368 -117.268 (delta_t = 0.100 [sec])
-60.368 -6.600 (delta_t = 53.768 [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 1.024000
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 1.024000
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 1.024000
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 -6.600 sec. to 100.216 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.26527 ( -0.0775959 0.077062 )
Norm@50keV : 3.43839E-03 ( -0.000142319 0.000142128 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.84 using 59 PHA bins.
# Reduced chi-squared = 0.9270 for 57 degrees of freedom
# Null hypothesis probability = 6.319206e-01
Photon flux (15-150 keV) in 106.8 sec: 0.407699 ( -0.0182663 0.0183777 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.66053e-06 ( -1.59002e-07 1.59511e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -6.600 sec. to 100.216 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.26335 ( -0.0799121 0.0757751 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 3.45174E-03 ( -0.000141696 0.000761334 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.87 using 59 PHA bins.
# Reduced chi-squared = 0.9441 for 56 degrees of freedom
# Null hypothesis probability = 5.940592e-01
Photon flux (15-150 keV) in 106.8 sec: 0.407994 ( -0.018788 0.017926 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.65934e-06 ( -1.57434e-07 1.59442e-07 ) ergs/cm2
Band function
Time interval is from -6.600 sec. to 100.216 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.958978 ( 0.961813 0.961813 )
beta : -1.26545 ( -0.0792594 0.0777333 )
Epeak [keV] : 58.2301 ( -57.9639 -57.9639 )
Norm@50keV : 6.48581E-03 ( -0.00234421 228413 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.83 using 59 PHA bins.
# Reduced chi-squared = 0.9606 for 55 degrees of freedom
# Null hypothesis probability = 5.577983e-01
Photon flux (15-150 keV) in 106.8 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] : 20.5539 ( )
R^2/D10^2 : 1.63996E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 192.11 using 59 PHA bins.
# Reduced chi-squared = 3.3703 for 57 degrees of freedom
# Null hypothesis probability = 1.545390e-16
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.411e-07 1.244e-08
25- 50 7.153e-07 4.640e-08
50-150 2.248e-06 1.474e-07
15-150 3.104e-06 1.410e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-6.47452 -200)
Norm : 1.73040 (-0.0721167 0.0721167)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.604e-07 2.083e-08
25- 50 8.856e-07 3.882e-08
50-150 1.942e-06 8.971e-08
15-150 3.288e-06 1.533e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.16169 (-0.876285 1.05703)
R1^2/D10^2 : 0.599734 (-0.268047 0.510552)
kT2 [keV] : 29.5674 (-2.92316 3.93045)
R2^2/D10^2 : 4.43863E-03 (-0.0014805 0.00184092)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.008e-07 7.898e-08
25- 50 7.553e-07 8.838e-08
50-150 2.527e-06 2.387e-07
15-150 3.683e-06 2.932e-07
Peak spectrum fit
Power-law model
Time interval is from 7.012 sec. to 8.012 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.16367 ( -0.143627 0.141015 )
Norm@50keV : 2.24631E-02 ( -0.00198662 0.00198537 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.64 using 59 PHA bins.
# Reduced chi-squared = 1.029 for 57 degrees of freedom
# Null hypothesis probability = 4.151172e-01
Photon flux (15-150 keV) in 1 sec: 2.62403 ( -0.240328 0.240841 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.30302e-07 ( -2.16997e-08 2.17752e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 7.012 sec. to 8.012 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.193089 ( -0.769739 0.64673 )
Epeak [keV] : 101.553 ( -23.4736 90.6975 )
Norm@50keV : 6.41823E-02 ( -0.03174 0.0785107 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.61 using 59 PHA bins.
# Reduced chi-squared = 0.9215 for 56 degrees of freedom
# Null hypothesis probability = 6.417454e-01
Photon flux (15-150 keV) in 1 sec: 2.54662 ( -0.24716 0.2471 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.20281e-07 ( -2.3501e-08 2.3341e-08 ) ergs/cm2
Band function
Time interval is from 7.012 sec. to 8.012 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.219964 ( -0.922646 4.33108 )
beta : -1.74489 ( 1.73073 0.473384 )
Epeak [keV] : 79.6392 ( -39.2573 72.9401 )
Norm@50keV : 0.109390 ( -0.122172 79.7752 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.42 using 59 PHA bins.
# Reduced chi-squared = 0.9167 for 55 degrees of freedom
# Null hypothesis probability = 6.500617e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.20697e-07 ( -2.2069e-07 -2.2816e-08 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 18.8068 (-1.85044 2.13944)
R^2/D10^2 : 0.155562 (-0.0474684 0.0651257)
(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 1.086e-08 1.813e-09
25- 50 5.183e-08 6.270e-09
50-150 1.344e-07 1.930e-08
15-150 1.971e-07 2.300e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-18.9032 -200)
Norm : 10.9739 (-0.990991 0.990991)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.733e-08 5.320e-09
25- 50 5.258e-08 1.590e-08
50-150 1.153e-07 5.181e-08
15-150 1.952e-07 6.145e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 12.5298 (-5.23883 4.52115)
R1^2/D10^2 : 0.403710 (-0.220661 1.10018)
kT2 [keV] : 42.5125 (-34.4167 -41.381)
R2^2/D10^2 : 6.83117E-03 (-0.00639892 0.0461872)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.515e-08 7.543e-09
25- 50 5.489e-08 2.426e-08
50-150 1.523e-07 7.587e-08
15-150 2.223e-07 1.006e-07
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: 1.16709 ( -0.0593532 0.0589412 )
Norm@50keV : 1.54830E-02 ( -0.000506936 0.000505716 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.95 using 59 PHA bins.
# Reduced chi-squared = 1.034 for 57 degrees of freedom
# Null hypothesis probability = 4.041205e-01
Photon flux (15-150 keV) in 15.83 sec: 1.80942 ( -0.0632513 0.0634802 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.51032e-06 ( -8.45583e-08 8.46449e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.08199 ( -0.242339 0.108166 )
Epeak [keV] : 598.511 ( -661.529 -661.529 )
Norm@50keV : 1.68396E-02 ( -0.00242977 0.00426961 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.72 using 59 PHA bins.
# Reduced chi-squared = 1.049 for 56 degrees of freedom
# Null hypothesis probability = 3.761263e-01
Photon flux (15-150 keV) in 15.83 sec: 1.80967 ( -0.06585 0.0624 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.50328e-06 ( -8.7999e-08 8.39623e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.305299 ( -3.76426 -3.76426 )
beta : -1.17932 ( -0.0607642 0.0608375 )
Epeak [keV] : 52.2125 ( -52.1304 333.186 )
Norm@50keV : 6.40377E-02 ( -0.064791 780190 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.51 using 59 PHA bins.
# Reduced chi-squared = 1.064 for 55 degrees of freedom
# Null hypothesis probability = 3.479105e-01
Photon flux (15-150 keV) in 15.83 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) = 7.99e-07
S(50-100 keV) = 1.33e-06
T90 vs. Hardness ratio plot
T90 = 52.5439999103546 sec.
Hardness ratio (energy fluence ratio) = 1.66458
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.3548
Count Ratio (50-100 keV) / (15-25 keV) = 1.42286
Mask shadow pattern
IMX = -7.026356270580090E-01, IMY = 1.091437146407152E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000
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:
-239.368000 -234.738000
-229.368000 -228.188000
-215.368000 -209.468000
-208.368000 -196.888000
-185.368000 -184.008000
-117.368000 -117.268000
-60.368000 -6.600000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.5698 35.2001 2.4 56.0 -26.6 3.1710 4.7 1.0 Cyg X-1
308.1752 40.9485 8.9 49.5 -19.0 0.4102 1.3 3.0 Cyg X-3
326.0468 38.3480 4.6 35.5 -17.7 0.4621 2.5 6.1 Cyg X-2
348.3814 -12.1815 2.4 34.9 -123.2 1.0661 4.8 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-6.600000 9.232600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
299.6345 35.3007 18.6 55.9 -26.5 -0.1905 -0.6 6.3 Cyg X-1
308.0991 41.0532 4.9 49.6 -18.8 0.3518 2.4 6.1 Cyg X-3
326.2467 38.3448 6.0 35.4 -17.6 -0.1651 -1.9 3.8 Cyg X-2
24.8596 3.1293 2.2 28.4 157.8 0.4151 5.2 ------ UNKNOWN
16.0974 -12.1653 0.3 35.4 -171.2 3.6826 44.3 ------ UNKNOWN
303.0106 52.2573 3.4 55.0 -5.7 0.7919 3.4 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
93.832600 242.752900
248.632000 279.472000
280.632000 281.332000
282.632000 284.582000
285.632000 285.692000
294.632000 588.232000
625.632000 632.672000
634.632000 637.862000
639.632000 639.752000
640.632000 640.872000
641.632000 641.762000
642.632000 642.852000
645.632000 655.342000
656.632000 657.202000
660.632000 690.242000
691.632000 739.102000
740.632000 743.682000
744.632000 749.602000
752.632000 757.112000
760.632000 765.252000
768.632000 772.882000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
347.7878 28.6315 2.5 49.1 -23.1 8.1038 4.7 ------ UNKNOWN
341.2769 -8.4118 2.6 34.4 -76.8 7.0149 4.4 ------ UNKNOWN
334.2553 4.5977 3.1 44.8 -60.2 15.1749 3.7 ------ UNKNOWN
Plot creation:
Sat Feb 8 02:45:00 EST 2025