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
293.9219 20.5975 0.0132 24.1122 -107.3656 2.2499510 14.524 TRIG_00796778
Foreground time interval of the image:
-28.824 34.677 (delta_t = 63.501 [sec])
Background time interval of the image:
-618.323 -601.424 (delta_t = 16.899 [sec])
-239.824 -28.824 (delta_t = 211.000 [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 4.096000
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 4.096000
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 4.096000
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 -28.824 sec. to 371.176 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.20637 ( -0.13364 0.138784 )
Norm@50keV : 8.87783E-04 ( -7.95136e-05 7.84258e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.36 using 59 PHA bins.
# Reduced chi-squared = 1.024 for 57 degrees of freedom
# Null hypothesis probability = 4.250403e-01
Photon flux (15-150 keV) in 400 sec: 0.147484 ( -0.009575 0.009584 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.34249e-06 ( -2.54042e-07 2.58569e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -28.824 sec. to 371.176 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.71967 ( -0.637311 0.283565 )
Epeak [keV] : 22.8673 ( -22.0394 12.9864 )
Norm@50keV : 1.71830E-03 ( -0.000659424 0.0023513 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.11 using 59 PHA bins.
# Reduced chi-squared = 1.002 for 56 degrees of freedom
# Null hypothesis probability = 4.706460e-01
Photon flux (15-150 keV) in 400 sec: 0.143756 ( -0.010399 0.010103 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.15566e-06 ( -3.08774e-07 3.26751e-07 ) ergs/cm2
Band function
Time interval is from -28.824 sec. to 371.176 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] : 9.00649 (-0.691614 0.745465)
R^2/D10^2 : 9.64679E-02 (-0.0262901 0.0364711)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 98.95 using 59 PHA bins.
# Reduced chi-squared = 1.736 for 57 degrees of freedom
# Null hypothesis probability = 4.805402e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.096e-07 7.220e-08
25- 50 1.297e-06 1.054e-07
50-150 4.960e-07 9.686e-08
15-150 2.403e-06 1.822e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 48.1122 (-8.18999 11.1329)
Norm : 0.837899 (-0.0973059 0.12023)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.23 using 59 PHA bins.
# Reduced chi-squared = 1.004 for 57 degrees of freedom
# Null hypothesis probability = 4.665936e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.120e-07 7.400e-08
25- 50 1.150e-06 8.380e-08
50-150 1.076e-06 2.106e-07
15-150 3.038e-06 2.400e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.40445 (-0.942402 1.14679)
R1^2/D10^2 : 1.14650 (-0.685092 2.24226)
kT2 [keV] : 14.0848 (-2.25384 3.65939)
R2^2/D10^2 : 1.24725E-02 (-0.00794947 0.0145742)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.62 using 59 PHA bins.
# Reduced chi-squared = 1.029 for 55 degrees of freedom
# Null hypothesis probability = 4.142744e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.616e-07 3.028e-07
25- 50 1.089e-06 2.766e-07
50-150 1.031e-06 4.332e-07
15-150 2.982e-06 7.922e-07
Peak spectrum fit
Power-law model
Time interval is from 90.676 sec. to 91.676 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.25497 ( -0.457902 0.556328 )
Norm@50keV : 4.06798E-03 ( -0.00155314 0.00150487 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.14 using 59 PHA bins.
# Reduced chi-squared = 0.9499 for 57 degrees of freedom
# Null hypothesis probability = 5.829448e-01
Photon flux (15-150 keV) in 1 sec: 0.693615 ( -0.161341 0.161571 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.8578e-08 ( -1.17196e-08 1.26987e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 90.676 sec. to 91.676 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.27433 ( -3.29903 1.2872 )
Epeak [keV] : 441.886 ( )
Norm@50keV : 3.95143E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.14 using 59 PHA bins.
# Reduced chi-squared = 0.9668 for 56 degrees of freedom
# Null hypothesis probability = 5.454594e-01
Photon flux (15-150 keV) in 1 sec: 0.693616 ( -0.160902 0.162575 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 90.676 sec. to 91.676 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] : 7.53362 (-1.96273 2.49794)
R^2/D10^2 : 0.968315 (-0.656556 2.28795)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.71 using 59 PHA bins.
# Reduced chi-squared = 1.013 for 57 degrees of freedom
# Null hypothesis probability = 4.486560e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.469e-09 4.961e-09
25- 50 1.489e-08 7.155e-09
50-150 3.196e-09 2.211e-09
15-150 2.756e-08 1.383e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 39.7265 (-18.5808 49.686)
Norm : 4.51647 (-1.64909 3.08128)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.40 using 59 PHA bins.
# Reduced chi-squared = 0.9544 for 57 degrees of freedom
# Null hypothesis probability = 5.732093e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.035e-08 3.599e-09
25- 50 1.357e-08 5.677e-09
50-150 1.042e-08 7.697e-09
15-150 3.434e-08 1.543e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.13036 (-3.46757 5.03103)
R1^2/D10^2 : 7.46553 (-6.68602 -7.46334)
kT2 [keV] : 12.8143 (-5.38623 -12.8156)
R2^2/D10^2 : 8.16260E-02 (-0.0807708 0.923443)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.39 using 59 PHA bins.
# Reduced chi-squared = 0.9889 for 55 degrees of freedom
# Null hypothesis probability = 4.979394e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.076e-08 6.000e-09
25- 50 1.277e-08 6.870e-09
50-150 9.968e-09 6.315e-09
15-150 3.349e-08 1.653e-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: 2.07621 ( -0.17139 0.179392 )
Norm@50keV : 2.12957E-03 ( -0.000247688 0.000242578 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.89 using 59 PHA bins.
# Reduced chi-squared = 0.9804 for 57 degrees of freedom
# Null hypothesis probability = 5.169575e-01
Photon flux (15-150 keV) in 63.5 sec: 0.331155 ( -0.028307 0.0283173 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.25371e-06 ( -1.30781e-07 1.33652e-07 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.94158 ( -0.748776 0.104199 )
Epeak [keV] : 17.7080 ( -14.5771 -15.8751 )
Norm@50keV : 2.55420E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.84 using 59 PHA bins.
# Reduced chi-squared = 0.9971 for 56 degrees of freedom
# Null hypothesis probability = 4.809807e-01
Photon flux (15-150 keV) in 63.5 sec: 0.329624 ( -0.028628 0.029438 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.23852e-06 ( -1.69418e-07 1.46075e-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) = 1.06e-06
S(50-100 keV) = 9.20e-07
T90 vs. Hardness ratio plot
T90 = 304 sec.
Hardness ratio (energy fluence ratio) = 0.867925
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.892493
Count Ratio (50-100 keV) / (15-25 keV) = 0.381103
Mask shadow pattern
IMX = -1.335876544575510E-01, IMY = 4.271762430992510E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000
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:
-618.323400 -601.424000
-239.824000 -28.824000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.3011 35.3987 6.5 41.9 -41.6 0.8454 1.8 8.4 Her X-1
288.9530 11.0087 4.3 34.8 -107.2 1.2378 2.7 9.9 GRS 1915+105
299.5824 35.2120 1.0 9.2 -92.2 2.8125 12.1 0.7 Cyg X-1
308.0507 40.9101 2.1 0.6 -139.8 1.1828 5.4 3.7 Cyg X-3
326.1841 38.3255 4.7 14.2 135.6 0.5946 2.5 0.6 Cyg X-2
15.3295 84.4397 3.2 46.5 45.6 3.2519 3.6 ------ UNKNOWN
357.5349 17.5377 2.6 48.4 142.9 4.6679 4.5 ------ UNKNOWN
201.5747 71.5567 2.8 55.8 17.1 5.4513 4.1 ------ UNKNOWN
341.6814 -6.4428 2.4 57.0 177.6 7.7005 4.8 ------ UNKNOWN
220.5873 51.0887 2.4 57.6 -9.5 5.3699 4.7 ------ UNKNOWN
281.4229 19.6176 2.5 31.5 -87.4 1.7896 4.6 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
-28.824000 34.676580
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.5490 35.3982 13.7 41.7 -41.7 -0.1909 -0.8 5.6 Her X-1
288.6918 10.8401 9.1 35.1 -106.9 -0.3090 -1.3 8.9 GRS 1915+105
299.5709 35.3917 5.2 9.0 -91.4 -0.2436 -2.2 11.4 Cyg X-1
308.2578 41.0536 40.0 0.5 -157.7 -0.0329 -0.3 9.0 Cyg X-3
326.1301 38.1374 9.2 14.2 136.4 -0.1460 -1.2 11.2 Cyg X-2
352.8231 67.3130 1.7 35.2 66.6 1.5339 6.7 ------ UNKNOWN
293.9219 20.5975 0.8 24.1 -107.4 2.2505 14.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
80.476620 841.876590
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4915 35.3166 7.0 37.5 -7.2 -1.2535 -1.6 2.3 Her X-1
268.2575 -1.3904 10.9 33.4 -77.0 1.1707 1.1 7.6 SW J1753.5-0127
273.9762 -13.8898 6.3 39.7 -97.7 4.6577 1.8 9.0 GX 17+2
288.8318 10.8931 2.9 10.9 -101.4 2.6603 4.0 3.7 GRS 1915+105
299.6057 35.2162 1.1 15.5 68.9 5.6480 10.3 1.2 Cyg X-1
308.0305 40.9917 2.3 23.7 78.4 3.5100 5.0 4.3 Cyg X-3
326.0772 38.2219 12.3 32.8 101.6 1.0527 0.9 7.5 Cyg X-2
268.6624 68.5190 3.5 50.4 39.4 10.0053 3.2 ------ UNKNOWN
258.2353 48.6140 3.2 39.9 14.2 2.9104 3.5 ------ UNKNOWN
288.8194 -2.2234 2.5 23.4 -116.0 3.2218 4.7 ------ UNKNOWN
232.2246 26.1549 3.7 56.4 -20.5 7.6194 3.2 ------ UNKNOWN
243.8259 13.0945 4.8 48.3 -39.5 4.1968 2.4 ------ UNKNOWN
275.8384 -15.1979 3.7 40.0 -101.1 7.7406 3.1 ------ UNKNOWN
Plot creation:
Sat Jan 20 09:09:13 EST 2018