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
184.3603 45.5705 0.0210 41.5424 -158.8771 1.5742161 9.148 TRIG_00984929
Foreground time interval of the image:
0.536 50.237 (delta_t = 49.701 [sec])
Background time interval of the image:
-239.464 0.536 (delta_t = 240.000 [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 8.192000
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 8.192000
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 8.192000
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 0.536 sec. to 136.536 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.922876 ( -0.278402 0.259623 )
Norm@50keV : 1.05344E-03 ( -0.00017188 0.00016851 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 41.61 using 59 bins.
Reduced chi-squared = 0.73
# Null hypothesis probability of 9.37e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 136 sec: 0.120948 ( -0.019614 0.01984 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.59396e-06 ( -2.44535e-07 2.45155e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.536 sec. to 136.536 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 6.21513E-04 ( -1.6384 1.02511 )
Epeak [keV] : 135.977 ( -48.9967 -135.976 )
Norm@50keV : 2.45608E-03 ( -0.00151618 0.0070187 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.86 using 59 bins.
Reduced chi-squared = 0.711786
# Null hypothesis probability of 9.49e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 136 sec: 0.115562 ( -0.0208783 0.021037 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.5485e-06 ( -2.59152e-07 2.55805e-07 ) ergs/cm2
Band function
Time interval is from 0.536 sec. to 136.536 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] : 24.6173 (-4.16 5.71339)
R^2/D10^2 : 3.16048E-03 (-0.00150789 0.00255822)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 41.78 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.35e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.562e-08 1.605e-08
25- 50 2.568e-07 6.854e-08
50-150 1.156e-06 3.180e-07
15-150 1.459e-06 3.410e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-33.2589 -200)
Norm : 0.516748 (-0.0824098 0.0824098)
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.53 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.56e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.749e-07 1.006e-07
25- 50 3.365e-07 1.918e-07
50-150 7.379e-07 4.172e-07
15-150 1.249e-06 6.929e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.18427 (-6.18783 -6.18783)
R1^2/D10^2 : 7.62512E-02 (-0.0760397 -0.0760397)
kT2 [keV] : 27.8047 (-6.1695 -27.8088)
R2^2/D10^2 : 2.04827E-03 (-0.00204715 0.00215102)
------------------------------------------------------------
#Fit statistic : Chi-Squared 39.52 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.43e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.023e-08 5.391e-08
25- 50 2.690e-07 1.380e-07
50-150 1.186e-06 6.239e-07
15-150 1.545e-06 8.198e-07
Peak spectrum fit
Power-law model
Time interval is from 5.536 sec. to 6.536 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.721122 ( -0.773142 0.609661 )
Norm@50keV : 6.41471E-03 ( -0.00285567 0.00258868 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.15 using 59 bins.
Reduced chi-squared = 0.879825
# Null hypothesis probability of 7.28e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.740310 ( -0.283578 0.29512 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.75711e-08 ( -2.61561e-08 2.61626e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 5.536 sec. to 6.536 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.454702 ( -2.66288 -0.454702 )
Epeak [keV] : 406.066 ( -406.066 -406.066 )
Norm@50keV : 7.97030E-03 ( -0.00426102 0.135579 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.12 using 59 bins.
Reduced chi-squared = 0.895
# Null hypothesis probability of 6.96e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 0.731593 ( -0.290053 0.290277 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.75658e-08 ( -2.63115e-08 2.62205e-08 ) ergs/cm2
Band function
Time interval is from 5.536 sec. to 6.536 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] : 31.9778 (-11.959 36.4646)
R^2/D10^2 : 9.41875E-03 (-0.00941814 0.0298104)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 50.90 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.02e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.448e-09 9.535e-10
25- 50 9.158e-09 5.675e-09
50-150 6.435e-08 3.864e-08
15-150 7.495e-08 4.670e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-92.8494 -200)
Norm : 3.23317 (-1.22842 1.22842)
------------------------------------------------------------
#Fit statistic : Chi-Squared 55.44 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 5.34e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.061e-09 5.315e-09
25- 50 1.551e-08 9.925e-09
50-150 3.401e-08 2.097e-08
15-150 5.757e-08 3.723e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.32957 (-7.29861 -7.29861)
R1^2/D10^2 : 0.367164 (-0.370607 2.3836)
kT2 [keV] : 40.0427 (-40.0081 -40.0081)
R2^2/D10^2 : 4.64358E-03 (-0.00465528 0.0250475)
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.92 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.69e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.275e-09 3.099e-09
25- 50 1.151e-08 7.495e-09
50-150 6.366e-08 3.783e-08
15-150 7.944e-08 4.559e-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: 0.692412 ( -0.316879 0.283678 )
Norm@50keV : 1.93909E-03 ( -0.000376709 0.00036148 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 52.56 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.42e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 49.7 sec: 0.224275 ( -0.0391295 0.0399037 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.1804e-06 ( -1.81628e-07 1.81769e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.239812 ( -1.74501 0.656208 )
Epeak [keV] : 259.583 ( -214.423 -214.423 )
Norm@50keV : 2.85717E-03 ( -0.00167816 0.00898415 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 51.90 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.31e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 49.7 sec: 0.218535 ( -0.039905 0.041308 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.16697e-06 ( -1.85709e-07 1.86067e-07 ) 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) = 2.80e-07
S(50-100 keV) = 5.92e-07
T90 vs. Hardness ratio plot
T90 = 122 sec.
Hardness ratio (energy fluence ratio) = 2.11429
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 2.02713
Count Ratio (50-100 keV) / (15-25 keV) = 3.13091
Mask shadow pattern
IMX = -8.265102105242641E-01, IMY = 3.193040653880231E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000
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:
-239.464000 0.536000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.6321 22.0326 0.9 47.9 -22.6 8.6647 12.7 1.1 Crab
39.9577 34.6707 3.1 52.4 30.1 5.3551 3.7 ------ UNKNOWN
230.0987 48.7078 2.8 55.6 163.9 7.3923 4.1 ------ UNKNOWN
65.0791 20.7616 2.8 54.9 -2.3 3.3060 4.2 ------ UNKNOWN
212.5579 38.6620 3.0 58.5 -177.2 7.1978 3.8 ------ UNKNOWN
84.6986 26.3352 2.6 43.5 -22.2 2.1920 4.4 ------ UNKNOWN
175.9560 41.0103 3.0 41.8 -147.4 2.1749 3.8 ------ UNKNOWN
165.5198 32.7117 2.2 44.8 -130.8 4.4020 5.4 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.536000 50.236600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
83.5604 21.8872 5.1 48.0 -22.6 -0.5160 -2.3 8.6 Crab
184.3603 45.5705 1.3 41.5 -158.9 1.5747 9.1 ------ UNKNOWN
96.2691 31.9509 2.2 35.4 -35.3 0.7478 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
123.636600 962.562500
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
230.2480 24.6030 2.2 42.2 116.3 20.6703 5.3 ------ UNKNOWN
230.3736 46.1016 4.1 31.6 84.6 5.1286 2.9 ------ UNKNOWN
165.2533 66.6332 3.1 23.3 -6.8 3.2313 3.7 ------ UNKNOWN
182.8619 -9.1610 2.6 54.8 -165.7 15.1613 4.5 ------ UNKNOWN
172.0530 -0.0563 3.1 47.0 -150.6 8.8938 3.8 ------ UNKNOWN
Plot creation:
Mon Nov 16 12:39:51 EST 2020