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
255.0944 -60.0983 0.0347 11.3 -81.0 0.5690 5.6 TRIG_00750044
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [sec])
Background time interval of the image:
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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.37113 ( -0.63961 0.834696 )
Norm@50keV : 3.10108E-04 ( -0.000310108 0.000157844 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.53 using 59 PHA bins.
# Reduced chi-squared = 0.9040 for 57 degrees of freedom
# Null hypothesis probability = 6.796644e-01
Photon flux (15-150 keV) in 64 sec: 5.64230E-02 ( -0.0170755 0.0170902 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.9237e-07 ( -7.432e-08 8.33696e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.78462 ( )
Epeak [keV] : 25.3581 ( )
Norm@50keV : 5.62100E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.18 using 59 PHA bins.
# Reduced chi-squared = 0.9317 for 56 degrees of freedom
# Null hypothesis probability = 6.203195e-01
Photon flux (15-150 keV) in 64 sec: 5.63636E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92632e-07 ( -8.40608e-08 8.37568e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.953731 ( 1.58963 1.58963 )
beta : -2.44092 ( 2.40081 0.667805 )
Epeak [keV] : 17.9327 ( -11.6607 -11.6607 )
Norm@50keV : 0.184095 ( -0.189529 223.486 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.47 using 59 PHA bins.
# Reduced chi-squared = 0.9359 for 55 degrees of freedom
# Null hypothesis probability = 6.101747e-01
Photon flux (15-150 keV) in 64 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] : 7.40630 (-2.78325 3.44742)
R^2/D10^2 : 8.25391E-02 (-0.081866 0.513002)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.40 using 59 PHA bins.
# Reduced chi-squared = 0.9544 for 57 degrees of freedom
# Null hypothesis probability = 5.731692e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.917e-08 2.959e-08
25- 50 7.494e-08 4.621e-08
50-150 1.517e-08 1.303e-08
15-150 1.393e-07 8.502e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 34.2760 (-19.1198 75.755)
Norm : 0.403604 (-0.197444 0.511364)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.05 using 59 PHA bins.
# Reduced chi-squared = 0.9132 for 57 degrees of freedom
# Null hypothesis probability = 6.608120e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.594e-08 3.053e-08
25- 50 6.853e-08 3.957e-08
50-150 4.439e-08 3.376e-08
15-150 1.689e-07 1.002e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.28703 (-2.89605 -3.26148)
R1^2/D10^2 : 1.89909 (-1.89439 -1.9266)
kT2 [keV] : 11.2780 (-11.2442 -11.2445)
R2^2/D10^2 : 1.13619E-02 (-0.0112969 0.122607)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.53 using 59 PHA bins.
# Reduced chi-squared = 0.9369 for 55 degrees of freedom
# Null hypothesis probability = 6.080656e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.863e-08 2.978e-08
25- 50 6.444e-08 3.715e-08
50-150 4.151e-08 3.063e-08
15-150 1.646e-07 8.720e-08
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.37113 ( -0.63961 0.834696 )
Norm@50keV : 3.10108E-04 ( -0.000310108 0.000157844 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.53 using 59 PHA bins.
# Reduced chi-squared = 0.9040 for 57 degrees of freedom
# Null hypothesis probability = 6.796644e-01
Photon flux (15-150 keV) in 64 sec: 5.64230E-02 ( -0.0170755 0.0170902 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.9237e-07 ( -7.432e-08 8.33696e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.78462 ( )
Epeak [keV] : 25.3581 ( )
Norm@50keV : 5.62100E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.18 using 59 PHA bins.
# Reduced chi-squared = 0.9317 for 56 degrees of freedom
# Null hypothesis probability = 6.203195e-01
Photon flux (15-150 keV) in 64 sec: 5.63636E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92632e-07 ( -8.40608e-08 8.37568e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.953731 ( 1.58963 1.58963 )
beta : -2.44092 ( 2.40081 0.667805 )
Epeak [keV] : 17.9327 ( -11.6607 -11.6607 )
Norm@50keV : 0.184095 ( -0.189529 223.486 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.47 using 59 PHA bins.
# Reduced chi-squared = 0.9359 for 55 degrees of freedom
# Null hypothesis probability = 6.101747e-01
Photon flux (15-150 keV) in 64 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] : 7.40630 (-2.78325 3.44742)
R^2/D10^2 : 8.25391E-02 (-0.081866 0.513002)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.40 using 59 PHA bins.
# Reduced chi-squared = 0.9544 for 57 degrees of freedom
# Null hypothesis probability = 5.731692e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.917e-08 3.017e-08
25- 50 7.494e-08 4.714e-08
50-150 1.517e-08 1.249e-08
15-150 1.393e-07 8.342e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 34.2760 (-19.1198 75.755)
Norm : 0.403604 (-0.197444 0.511364)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.05 using 59 PHA bins.
# Reduced chi-squared = 0.9132 for 57 degrees of freedom
# Null hypothesis probability = 6.608120e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.594e-08 3.251e-08
25- 50 6.853e-08 4.325e-08
50-150 4.439e-08 3.692e-08
15-150 1.689e-07 1.011e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.28703 (-3.04557 -3.26148)
R1^2/D10^2 : 1.89909 (-1.89439 -1.9266)
kT2 [keV] : 11.2780 (-11.244 -11.2445)
R2^2/D10^2 : 1.13619E-02 (-0.0112969 0.122607)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.53 using 59 PHA bins.
# Reduced chi-squared = 0.9369 for 55 degrees of freedom
# Null hypothesis probability = 6.080656e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.863e-08 2.919e-08
25- 50 6.444e-08 3.683e-08
50-150 4.151e-08 2.724e-08
15-150 1.646e-07 8.570e-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: 2.37113 ( -0.63961 0.834696 )
Norm@50keV : 3.10108E-04 ( -0.000310108 0.000157844 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.53 using 59 PHA bins.
# Reduced chi-squared = 0.9040 for 57 degrees of freedom
# Null hypothesis probability = 6.796644e-01
Photon flux (15-150 keV) in 64 sec: 5.64230E-02 ( -0.0170755 0.0170902 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.9237e-07 ( -7.432e-08 8.33696e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.78462 ( )
Epeak [keV] : 25.3581 ( )
Norm@50keV : 5.62100E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.18 using 59 PHA bins.
# Reduced chi-squared = 0.9317 for 56 degrees of freedom
# Null hypothesis probability = 6.203195e-01
Photon flux (15-150 keV) in 64 sec: 5.63636E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92632e-07 ( -8.40608e-08 8.37568e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.953731 ( 1.58963 1.58963 )
beta : -2.44092 ( 2.40081 0.667805 )
Epeak [keV] : 17.9327 ( -11.6607 -11.6607 )
Norm@50keV : 0.184095 ( -0.189529 223.486 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.47 using 59 PHA bins.
# Reduced chi-squared = 0.9359 for 55 degrees of freedom
# Null hypothesis probability = 6.101747e-01
Photon flux (15-150 keV) in 64 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) = 6.28e-08
S(50-100 keV) = 4.86e-08
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.773885
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.629644
Count Ratio (50-100 keV) / (15-25 keV) = 0.0676522
Mask shadow pattern
IMX = 3.104463845517135E-02, IMY = 1.965827530052797E-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:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
169.9476 -60.6578 0.0 40.6 -5.5 -0.3370 -2.3 11.0 Cen X-3
186.6414 -62.7820 23.5 32.4 -5.9 0.0593 0.5 0.8 GX 301-2
244.9702 -15.6457 0.6 35.1 129.5 3.8989 20.2 0.6 Sco X-1
256.0581 -37.6921 5.2 15.5 165.8 -0.2253 -2.2 9.7 4U 1700-377
256.5038 -36.4744 4.6 16.8 164.9 0.2441 2.5 4.5 GX 349+2
263.1298 -24.6652 6.5 29.9 164.6 0.2098 1.8 8.2 GX 1+4
264.7132 -44.6095 4.5 15.1 -157.7 -0.2601 -2.6 9.7 4U 1735-44
268.3336 -1.4726 7.3 53.3 158.9 -0.8931 -1.6 2.4 SW J1753.5-0127
270.3574 -25.0903 2.4 32.6 176.2 0.6132 4.9 4.0 GX 5-1
270.1169 -25.8098 8.2 31.9 176.5 0.1779 1.4 10.8 GRS 1758-258
273.9440 -14.0000 6.0 43.9 172.2 0.4060 1.9 4.2 GX 17+2
275.8136 -30.3746 4.9 31.1 -170.5 0.2938 2.3 5.8 H1820-303
285.0318 -24.9182 364.6 40.5 -165.8 0.0048 0.0 0.3 HT1900.1-2455
263.1572 -33.8843 8.4 21.8 175.0 0.1426 1.4 8.9 GX 354-0
212.0593 -36.1895 2.4 27.1 58.0 0.7036 4.9 ------ UNKNOWN
219.7286 -42.6397 2.5 18.5 54.5 0.4776 4.5 ------ UNKNOWN
259.9274 -25.0172 1.0 28.4 159.4 1.3042 11.1 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
107.700600 364.460000
373.000000 963.063400
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
170.3190 -60.6218 33.9 38.9 12.0 0.3589 0.3 0.1 Cen X-3
186.5879 -62.6716 3.9 31.3 16.1 2.4247 2.9 6.2 GX 301-2
255.8274 -37.9331 5.5 22.2 142.6 1.4407 2.1 9.2 4U 1700-377
256.2838 -36.4075 3.6 23.7 143.5 2.2596 3.2 7.4 GX 349+2
263.0324 -24.8273 3.2 35.7 153.4 4.7555 3.6 5.1 GX 1+4
265.0011 -44.4260 6.4 16.8 166.3 1.2204 1.8 11.2 4U 1735-44
270.3158 -25.0554 2.7 36.6 164.5 4.5075 4.2 2.2 GX 5-1
270.3453 -25.8676 6.7 35.8 164.9 1.9027 1.7 7.8 GRS 1758-258
274.1329 -14.0369 38.1 48.2 166.2 0.7050 0.3 7.4 GX 17+2
275.9457 -30.3560 4.0 32.9 175.5 2.4280 2.9 1.3 H1820-303
285.0040 -24.9096 14.1 40.8 -175.2 -0.9676 -0.8 1.9 HT1900.1-2455
262.8876 -33.7588 3.7 26.9 155.5 2.3316 3.1 6.8 GX 354-0
259.8890 -25.0143 0.9 35.3 148.6 16.0805 12.9 ------ UNKNOWN
255.1675 -41.6806 1.4 18.4 141.3 5.5940 8.3 ------ UNKNOWN
138.4084 -53.9253 2.7 55.3 0.7 9.4678 4.2 ------ UNKNOWN
83.3401 -68.6267 3.1 51.1 -35.2 9.5484 3.7 ------ UNKNOWN
320.8372 -35.4539 2.8 48.0 -129.1 17.6701 4.2 ------ UNKNOWN
323.8899 -40.4060 3.7 45.7 -122.3 12.1106 3.1 ------ UNKNOWN
Plot creation:
Thu Apr 27 13:45:38 EDT 2017