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
242.4917 55.4245 0.0215 38.4841 1.7476 0.5240009 8.973 TRIG_01114034
Foreground time interval of the image:
-1.396 13.440 (delta_t = 14.836 [sec])
Background time interval of the image:
-239.488 -1.396 (delta_t = 238.092 [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 -1.396 sec. to 13.440 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.52013 ( -0.303699 0.3074 )
Norm@50keV : 2.07128E-03 ( -0.000416308 0.000414253 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 64.02 using 59 bins.
Reduced chi-squared = 1.12316
# Null hypothesis probability of 2.44e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 14.84 sec: 0.260015 ( -0.052246 0.052444 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.90686e-07 ( -6.18027e-08 6.26468e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -1.396 sec. to 13.440 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.690416 ( -2.51423 1.63425 )
Epeak [keV] : 58.4797 ( -11.8336 35.1042 )
Norm@50keV : 2.85500E-02 ( -0.0287389 0.503946 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.06 using 59 bins.
Reduced chi-squared = 1.03679
# Null hypothesis probability of 3.99e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 14.84 sec: 0.242581 ( -0.053301 0.053921 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.55478e-07 ( -6.0604e-08 6.62241e-08 ) ergs/cm2
Band function
Time interval is from -1.396 sec. to 13.440 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] : 14.3052 (-2.47911 3.1147)
R^2/D10^2 : 3.78543E-02 (-0.0195169 0.0372292)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.50 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.20e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.423e-08 9.133e-09
25- 50 9.204e-08 2.833e-08
50-150 1.254e-07 4.817e-08
15-150 2.416e-07 7.096e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 189.833 (-104.115 -187.837)
Norm : 1.08258 (-0.213099 0.266359)
------------------------------------------------------------
#Fit statistic : Chi-Squared 62.22 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.96e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.025e-08 2.302e-08
25- 50 7.699e-08 4.314e-08
50-150 1.661e-07 9.512e-08
15-150 2.833e-07 1.596e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.1562 (-10.1562 -10.1562)
R1^2/D10^2 : 6.19082E-02 (-0.0619082 -0.0619082)
kT2 [keV] : 19.1175 (-19.1175 -19.1175)
R2^2/D10^2 : 8.12285E-03 (-0.00812286 0.0623291)
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.01 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.65e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.804e-08 3.444e-08
25- 50 9.103e-08 1.743e-07
50-150 1.391e-07 5.316e-07
15-150 2.582e-07 8.199e-07
Peak spectrum fit
Power-law model
Time interval is from 3.648 sec. to 4.648 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.32697 ( -0.509862 0.654947 )
Norm@50keV : 4.16071E-03 ( -0.00183452 0.00177711 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.88 using 59 bins.
Reduced chi-squared = 0.910175
# Null hypothesis probability of 6.67e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.738301 ( -0.209706 0.209764 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.99742e-08 ( -1.38496e-08 1.48964e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 3.648 sec. to 4.648 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.586452 ( -6.10634 1.57018 )
Epeak [keV] : 29.9766 ( -24.4245 -30.2398 )
Norm@50keV : 4.97447E-02 ( -0.0591161 578.419 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.60 using 59 bins.
Reduced chi-squared = 0.903571
# Null hypothesis probability of 6.79e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.717741 ( -0.209156 0.210458 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.55672e-08 ( -1.21109e-08 1.56741e-08 ) ergs/cm2
Band function
Time interval is from 3.648 sec. to 4.648 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] : 8.18795 (-2.10387 2.78611)
R^2/D10^2 : 0.779890 (-0.77989 1.76552)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.20 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.91e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.614e-09 5.800e-09
25- 50 1.751e-08 1.057e-08
50-150 4.960e-09 3.701e-09
15-150 3.209e-08 1.976e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 39.2091 (-18.8929 48.857)
Norm : 4.95100 (-2.00494 3.82182)
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.06e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.129e-08 5.628e-09
25- 50 1.473e-08 8.181e-09
50-150 1.114e-08 8.739e-09
15-150 3.716e-08 2.048e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 0.961779 (-1.6299 10.9553)
R1^2/D10^2 : 8.06681E+05 (-839901 1.13933e+11)
kT2 [keV] : 8.80413 (-2.36169 3.26445)
R2^2/D10^2 : 0.557298 (-0.558132 1.1148)
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.66 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.78e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.005e-08 5.065e-09
25- 50 1.675e-08 1.025e-08
50-150 6.556e-09 4.900e-09
15-150 3.336e-08 2.058e-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: 1.52013 ( -0.303699 0.3074 )
Norm@50keV : 2.07128E-03 ( -0.000416308 0.000414253 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 64.02 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.44e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 14.84 sec: 0.260009 ( -0.0522443 0.0524408 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.90646e-07 ( -6.1769e-08 6.27259e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.694462 ( -2.51346 1.63496 )
Epeak [keV] : 58.4528 ( -11.8325 35.1303 )
Norm@50keV : 2.87024E-02 ( -0.0287397 0.501344 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 58.06 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.99e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 14.84 sec: 0.242569 ( -0.0533 0.053905 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.55557e-07 ( -6.06259e-08 6.62547e-08 ) 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) = 7.26e-08
S(50-100 keV) = 1.01e-07
T90 vs. Hardness ratio plot
T90 = 13.5239999294281 sec.
Hardness ratio (energy fluence ratio) = 1.39118
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.60484
Count Ratio (50-100 keV) / (15-25 keV) = 1.39476
Mask shadow pattern
IMX = 7.946120681721145E-01, IMY = -2.424431433485136E-02
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:
-239.488000 -1.396000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4201 35.4863 7.6 41.0 35.5 0.7528 1.5 8.8 Her X-1
184.9840 -26.0978 2.2 56.9 173.9 6.1617 5.2 ------ UNKNOWN
183.8276 -4.7645 2.7 38.7 -170.8 1.7377 4.2 ------ UNKNOWN
196.5479 25.4191 3.2 9.6 -124.7 1.0423 3.6 ------ UNKNOWN
158.7357 7.6523 2.0 49.7 -133.3 8.2138 5.8 ------ UNKNOWN
159.6582 25.9710 2.3 42.4 -109.8 5.6982 5.0 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-1.396000 13.440000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4825 35.2091 4.8 41.1 35.9 -0.2196 -2.4 8.1 Her X-1
268.5041 39.4776 2.8 52.0 29.2 0.9189 4.1 ------ UNKNOWN
242.4918 55.4245 1.3 38.5 1.7 0.5243 9.0 ------ UNKNOWN
196.1569 23.6315 2.1 10.4 -134.1 0.1996 5.4 ------ UNKNOWN
177.1081 -18.7075 2.7 53.9 -174.0 0.5346 4.3 ------ UNKNOWN
265.8274 70.6619 2.1 54.8 -9.8 0.7425 5.5 ------ UNKNOWN
158.6717 7.8605 2.6 49.6 -133.0 0.8677 4.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
154.012600 962.565600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4411 35.3305 6.3 21.7 97.3 2.3763 1.8 1.1 Her X-1
299.5707 35.1736 0.8 43.4 37.8 27.1730 15.3 1.9 Cyg X-1
308.2018 41.0008 4.5 44.3 24.9 4.4194 2.6 5.1 Cyg X-3
268.4406 62.3725 3.0 15.0 -3.6 3.4436 3.9 ------ UNKNOWN
169.5852 39.4267 2.3 49.3 -132.2 24.1486 5.1 ------ UNKNOWN
Plot creation:
Mon Oct 24 12:43:09 EDT 2022