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
202.0571 46.6856 0.0213 11.3250 174.1393 0.2508746 9.090 TRIG_01152764
Foreground time interval of the image:
0.316 2.872 (delta_t = 2.556 [sec])
Background time interval of the image:
-239.888 0.316 (delta_t = 240.204 [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
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 3.072000
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 3.072000
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 3.072000
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 0.316 sec. to 2.872 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.43876 ( -0.289614 0.298135 )
Norm@50keV : 6.51527E-03 ( -0.00116319 0.00114577 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 37.79 using 59 bins.
Reduced chi-squared = 0.662982
# Null hypothesis probability of 9.77e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 2.556 sec: 0.800720 ( -0.135542 0.135599 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.59713e-07 ( -3.16274e-08 3.22514e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.316 sec. to 2.872 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00091 ( -1.51206 0.71085 )
Epeak [keV] : 112.848 ( -112.844 -112.844 )
Norm@50keV : 1.09426E-02 ( -0.00548681 0.051557 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 37.38 using 59 bins.
Reduced chi-squared = 0.6675
# Null hypothesis probability of 9.74e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 2.556 sec: 0.788264 ( -0.140834 0.139664 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.54504e-07 ( -3.43163e-08 3.49178e-08 ) ergs/cm2
Band function
Time interval is from 0.316 sec. to 2.872 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] : 15.1552 (-2.77986 3.58038)
R^2/D10^2 : 9.07011E-02 (-0.0471228 0.0911241)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.99 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.15e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.113e-08 3.397e-09
25- 50 4.464e-08 1.163e-08
50-150 7.009e-08 2.507e-08
15-150 1.259e-07 3.270e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-91.7665 -199.363)
Norm : 3.28102 (-0.553061 0.553053)
------------------------------------------------------------
#Fit statistic : Chi-Squared 37.85 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.76e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.088e-08 1.198e-08
25- 50 4.017e-08 2.248e-08
50-150 8.810e-08 5.007e-08
15-150 1.492e-07 8.390e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.47818 (-1.8749 7.54418)
R1^2/D10^2 : 10.5965 (-10.3974 1605.92)
kT2 [keV] : 18.2612 (-4.08235 24.8307)
R2^2/D10^2 : 4.38203E-02 (-0.042193 0.0643016)
------------------------------------------------------------
#Fit statistic : Chi-Squared 36.89 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.71e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.944e-08 9.586e-09
25- 50 3.764e-08 1.768e-08
50-150 8.454e-08 4.781e-08
15-150 1.416e-07 6.202e-08
Peak spectrum fit
Power-law model
Time interval is from 1.744 sec. to 2.744 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.77574 ( -0.418079 0.487266 )
Norm@50keV : 6.92121E-03 ( -0.00210856 0.00195745 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.17 using 59 bins.
Reduced chi-squared = 0.774912
# Null hypothesis probability of 8.93e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.944954 ( -0.224618 0.224616 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.37911e-08 ( -1.89372e-08 1.95386e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.744 sec. to 2.744 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.74610 ( -1.70918 1.88421 )
Epeak [keV] : 402.204 ( -404.416 -404.426 )
Norm@50keV : 7.18276E-03 ( -0.00718372 0.0493428 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.17 using 59 bins.
Reduced chi-squared = 0.78875
# Null hypothesis probability of 8.74e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.944409 ( -0.226002 0.224611 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.083e-08 ( -2.36637e-08 2.02112e-08 ) ergs/cm2
Band function
Time interval is from 1.744 sec. to 2.744 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] : 13.2814 (-4.36176 5.25891)
R^2/D10^2 : 0.160381 (-0.109378 0.476533)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.07 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.96e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.997e-09 3.182e-09
25- 50 2.113e-08 1.037e-08
50-150 2.386e-08 1.415e-08
15-150 5.099e-08 2.732e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 120.177 (-70.7074 -118.957)
Norm : 4.03303 (-1.06134 1.62607)
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.45 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.87e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.050e-08 6.220e-09
25- 50 1.880e-08 1.088e-08
50-150 3.357e-08 2.295e-08
15-150 6.287e-08 4.028e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.76911 (-1.82821 3.119)
R1^2/D10^2 : 13.9873 (-12.9334 666.79)
kT2 [keV] : 19.3403 (-6.21612 13.3716)
R2^2/D10^2 : 3.57968E-02 (-0.0304294 0.0533515)
------------------------------------------------------------
#Fit statistic : Chi-Squared 42.75 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.85e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.208e-08 6.575e-09
25- 50 1.561e-08 8.850e-09
50-150 3.514e-08 2.204e-08
15-150 6.283e-08 3.505e-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: 1.43876 ( -0.289614 0.298135 )
Norm@50keV : 6.51527E-03 ( -0.00116319 0.00114577 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 37.79 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.77e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 2.556 sec: 0.800703 ( -0.135538 0.135594 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.59692e-07 ( -3.16154e-08 3.22751e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00088 ( -1.51206 0.710854 )
Epeak [keV] : 112.845 ( -112.844 -112.844 )
Norm@50keV : 1.09428E-02 ( -0.00548681 0.0515571 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 37.38 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.74e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 2.556 sec: 0.788184 ( -0.138306 0.139626 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.54566e-07 ( -3.46381e-08 3.49957e-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) = 3.83e-08
S(50-100 keV) = 5.65e-08
T90 vs. Hardness ratio plot
T90 = 2.29999995231628 sec.
Hardness ratio (energy fluence ratio) = 1.4752
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 1.29264
Count Ratio (50-100 keV) / (15-25 keV) = 0.990004
Mask shadow pattern
IMX = -1.992266900346516E-01, IMY = -2.045001260735579E-02
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 3.072000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 3.072000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 3.072000
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:
-239.888000 0.316000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3488 35.2554 12.7 39.3 -97.8 1.5491 0.9 7.5 Her X-1
184.3494 88.5749 2.8 53.0 -174.3 7.8484 4.2 ------ UNKNOWN
215.3942 38.9156 2.5 8.5 -109.1 2.0900 4.7 ------ UNKNOWN
249.7256 19.7552 2.7 41.8 -73.3 6.2860 4.3 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.316000 2.872000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4918 35.2705 5.7 39.4 -97.9 -0.2484 -2.0 4.6 Her X-1
205.2538 -17.8457 2.5 53.5 6.7 0.4124 4.6 ------ UNKNOWN
202.0570 46.6856 1.3 11.3 174.1 0.2508 9.1 ------ UNKNOWN
234.8250 50.2787 2.2 25.7 -127.4 0.1797 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
80.412640 962.198600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4970 35.3706 9.3 40.3 -84.6 6.2911 1.2 2.6 Her X-1
147.9890 36.2684 2.5 41.0 104.0 19.8063 4.7 ------ UNKNOWN
173.7769 60.2035 2.4 21.3 148.2 8.3633 4.8 ------ UNKNOWN
Plot creation:
Fri Jun 16 09:14:41 EDT 2023