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
261.2396 31.4280 0.0076 26.2682 1.4715 1.9500141 25.349 TRIG_01000926
Foreground time interval of the image:
7.856 30.172 (delta_t = 22.316 [sec])
Background time interval of the image:
-239.000 7.856 (delta_t = 246.856 [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 7.856 sec. to 30.172 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.26288 ( -0.137806 0.143187 )
Norm@50keV : 4.34678E-03 ( -0.000396484 0.000390026 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 45.34 using 59 bins.
Reduced chi-squared = 0.795439
# Null hypothesis probability of 8.67e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 22.32 sec: 0.744348 ( -0.051163 0.051245 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.21285e-07 ( -7.00993e-08 7.0995e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 7.856 sec. to 30.172 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.25650 ( -0.133409 0.149494 )
Epeak [keV] : 9999.36 ( )
Norm@50keV : 4.36421E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared 45.35 using 59 bins.
Reduced chi-squared = 0.809821
# Null hypothesis probability of 8.45e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 22.32 sec: 0.743830 ( -0.05078 0.052038 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.9494e-07 ( -4.0928e-08 7.81298e-08 ) ergs/cm2
Band function
Time interval is from 7.856 sec. to 30.172 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] : 8.44615 (-0.703788 0.779933)
R^2/D10^2 : 0.619196 (-0.187638 0.267579)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 97.69 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.44e-04 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.851e-07 2.101e-08
25- 50 3.551e-07 2.957e-08
50-150 1.111e-07 2.290e-08
15-150 6.513e-07 5.535e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 46.3664 (-8.12587 11.0877)
Norm : 4.28991 (-0.55797 0.68124)
------------------------------------------------------------
#Fit statistic : Chi-Squared 49.89 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 7.36e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.298e-07 2.164e-08
25- 50 3.210e-07 2.321e-08
50-150 2.897e-07 5.189e-08
15-150 8.405e-07 6.930e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.57246 (-0.828613 0.865367)
R1^2/D10^2 : 2.70619 (-1.16547 2.46294)
kT2 [keV] : 20.4567 (-4.46661 7.37164)
R2^2/D10^2 : 1.22143E-02 (-0.0083793 0.0212032)
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.43 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.70e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.441e-07 5.218e-08
25- 50 2.981e-07 5.767e-08
50-150 3.553e-07 1.820e-07
15-150 8.976e-07 2.515e-07
Peak spectrum fit
Power-law model
Time interval is from 17.172 sec. to 18.172 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.93738 ( -0.189744 0.199356 )
Norm@50keV : 1.45147E-02 ( -0.00192357 0.00188545 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 47.14 using 59 bins.
Reduced chi-squared = 0.827018
# Null hypothesis probability of 8.21e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.11700 ( -0.23739 0.23754 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.33552e-07 ( -1.70455e-08 1.72718e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 17.172 sec. to 18.172 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.09870 ( -1.01695 0.827825 )
Epeak [keV] : 46.0839 ( -16.2829 92.8179 )
Norm@50keV : 4.35937E-02 ( -0.0435942 0.123275 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.16 using 59 bins.
Reduced chi-squared = 0.788571
# Null hypothesis probability of 8.74e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.06561 ( -0.24285 0.24302 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.24733e-07 ( -1.84142e-08 1.91999e-08 ) ergs/cm2
Band function
Time interval is from 17.172 sec. to 18.172 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] : 10.5378 (-1.31893 1.50917)
R^2/D10^2 : 0.828796 (-0.331941 0.552087)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 57.69 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 4.50e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.904e-08 3.880e-09
25- 50 5.089e-08 7.610e-09
50-150 3.085e-08 8.740e-09
15-150 1.008e-07 1.466e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 73.7068 (-21.0021 35.6002)
Norm : 10.3138 (-1.67058 2.03307)
------------------------------------------------------------
#Fit statistic : Chi-Squared 44.28 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.91e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.660e-08 4.085e-09
25- 50 4.289e-08 5.230e-09
50-150 5.721e-08 1.995e-08
15-150 1.267e-07 2.225e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.91849 (-1.76385 2.31319)
R1^2/D10^2 : 4.66493 (-2.99542 12.1658)
kT2 [keV] : 17.7834 (-4.5492 13.9151)
R2^2/D10^2 : 7.80966E-02 (-0.0707337 0.121052)
------------------------------------------------------------
#Fit statistic : Chi-Squared 43.36 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.72e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.625e-08 1.417e-08
25- 50 4.335e-08 2.198e-08
50-150 5.384e-08 3.033e-08
15-150 1.234e-07 6.076e-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: 2.26288 ( -0.137806 0.143187 )
Norm@50keV : 4.34678E-03 ( -0.000396484 0.000390026 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 45.34 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.67e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 22.32 sec: 0.744268 ( -0.0511538 0.0512367 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.21095e-07 ( -7.01511e-08 7.09796e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.99541 ( -0.464752 0.0031065 )
Epeak [keV] : 0.713309 ( -0.265826 0.827704 )
Norm@50keV : 6.18857E-03 ( -0.00303485 0.00091974 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 45.20 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 8.49e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 22.32 sec: 0.738339 ( -0.054474 0.05439 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.0623e-07 ( -8.50861e-08 8.24545e-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) = 2.95e-07
S(50-100 keV) = 2.46e-07
T90 vs. Hardness ratio plot
T90 = 14.3600000143051 sec.
Hardness ratio (energy fluence ratio) = 0.833898
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.88701
Count Ratio (50-100 keV) / (15-25 keV) = 0.413367
Mask shadow pattern
IMX = 4.933771844710977E-01, IMY = -1.267426044624128E-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:
-239.000000 7.856000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9888 -15.6477 0.4 29.1 -127.4 11.6295 29.0 0.7 Sco X-1
254.4901 35.4052 2.6 31.6 -7.7 1.6802 4.5 4.1 Her X-1
255.9339 -37.9878 4.9 44.3 -160.2 1.4817 2.4 9.0 4U 1700-377
256.4909 -36.5678 17.1 42.8 -160.3 0.3819 0.7 9.1 GX 349+2
263.0174 -24.6947 3.3 30.2 -166.7 1.2651 3.5 3.1 GX 1+4
264.7412 -44.3006 13.2 49.7 -170.2 -0.7150 -0.9 9.0 4U 1735-44
268.4916 -1.4160 4.5 7.6 164.0 -0.7631 -2.6 7.7 SW J1753.5-0127
270.3096 -25.0775 5.9 30.9 -179.6 0.8350 2.0 1.4 GX 5-1
270.4125 -25.5729 0.0 31.4 -179.6 1.1199 2.6 11.8 GRS 1758-258
274.1126 -14.0573 3.4 21.4 165.1 1.0871 3.4 6.3 GX 17+2
275.9368 -30.3573 42.3 37.2 174.0 0.1446 0.3 0.8 H1820-303
284.9727 -24.7849 6.6 35.8 157.7 0.9792 1.8 8.8 HT1900.1-2455
288.6534 10.9266 6.9 23.8 84.4 -0.8552 -1.7 8.6 GRS 1915+105
299.7536 35.2307 9.3 43.5 51.4 1.6473 1.2 8.2 Cyg X-1
263.0128 -33.8544 18.6 39.3 -167.8 0.2863 0.6 1.7 GX 354-0
300.3235 1.0746 4.7 35.3 105.1 1.7781 2.5 ------ UNKNOWN
271.9198 -38.7183 2.9 44.6 -178.1 2.5330 4.0 ------ UNKNOWN
227.8449 -5.1900 3.1 38.9 -96.0 4.1027 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
7.856000 30.172000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9897 -15.7783 6.5 29.2 -127.6 -0.1671 -1.8 8.3 Sco X-1
254.5892 35.4556 5.5 31.6 -7.5 0.1812 2.1 9.4 Her X-1
256.0427 -37.6974 7.9 44.0 -160.2 -0.1860 -1.5 9.2 4U 1700-377
256.5206 -36.2747 4.1 42.5 -160.3 -0.3480 -2.8 9.8 GX 349+2
262.8781 -24.8199 5.1 30.3 -166.4 0.1880 2.3 8.4 GX 1+4
264.7871 -44.4567 15.8 49.9 -170.3 0.1394 0.7 1.9 4U 1735-44
268.4225 -1.5583 4.8 7.7 165.0 0.1602 2.4 7.1 SW J1753.5-0127
270.3430 -25.1421 3.4 31.0 -179.7 0.2917 3.4 4.9 GX 5-1
270.1783 -25.7737 7.6 31.6 -179.2 -0.1288 -1.5 7.0 GRS 1758-258
274.0288 -13.9612 16.9 21.3 165.2 -0.0508 -0.7 4.7 GX 17+2
275.7587 -30.2461 0.0 37.1 174.2 0.2213 2.2 11.3 H1820-303
285.1655 -24.9592 9.5 36.0 157.6 0.1375 1.2 7.4 HT1900.1-2455
288.8258 10.9035 64.6 23.9 84.6 -0.0179 -0.2 3.0 GRS 1915+105
299.6854 35.1572 13.0 43.4 51.5 0.2531 0.9 5.4 Cyg X-1
262.9238 -33.8410 740.4 39.3 -167.7 -0.0015 -0.0 3.3 GX 354-0
261.2396 31.4280 0.5 26.3 1.5 1.9499 25.3 ------ UNKNOWN
257.2076 -22.7391 2.1 29.3 -155.4 0.4328 5.5 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
125.500590 881.600600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.4219 35.3029 2.1 6.9 -25.1 3.9434 5.5 2.9 Her X-1
263.0022 -24.6015 59.6 56.1 -153.2 -0.7078 -0.2 8.7 GX 1+4
268.4309 -1.4231 6.1 33.6 -164.4 -1.7149 -1.9 4.2 SW J1753.5-0127
270.4114 -25.0722 6.1 57.2 -161.2 6.9401 1.9 6.9 GX 5-1
274.1278 -14.1475 13.4 47.2 -168.5 1.4255 0.9 9.7 GX 17+2
288.9601 10.8542 0.0 32.9 151.3 -3.5188 -3.0 11.0 GRS 1915+105
299.6341 35.0777 5.6 32.1 101.6 2.5032 2.0 7.7 Cyg X-1
308.0183 40.8350 15.1 38.5 91.1 1.9690 0.8 8.2 Cyg X-3
302.6673 54.0923 3.2 37.1 68.7 5.7130 3.6 ------ UNKNOWN
264.8293 61.7577 4.2 30.4 32.1 2.7594 2.7 ------ UNKNOWN
252.5935 62.4135 3.5 31.5 21.1 3.0525 3.3 ------ UNKNOWN
197.3492 64.9079 3.6 50.8 -0.7 4.8729 3.2 ------ UNKNOWN
205.9114 27.3078 4.0 47.9 -51.4 9.8155 2.9 ------ UNKNOWN
Plot creation:
Sat Jul 30 07:29:52 EDT 2022