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Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
268.6104 -26.3348 0.0124 6.2 -100.7 1.6269 15.4 TRIG_00570402
------------------------------------------
Foreground time interval of the image:
-17.799 73.201 (delta_t = 91.000 [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)
The mask-weighted light curves based on cleaned DPHs
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 -78.632 sec. to 528.124 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.78783 ( -0.171518 0.176933 )
Norm@50keV : 2.75250E-04 ( -3.78909e-05 4.0221e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 96.70 using 59 PHA bins.
# Reduced chi-squared = 1.697 for 57 degrees of freedom
# Null hypothesis probability = 8.067640e-04
Photon flux (15-150 keV) in 606.8 sec: 0.141391 ( -0.00885182 0.00888119 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.16759e-06 ( -1.91785e-07 1.92208e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -78.632 sec. to 528.124 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.49457E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 465.22 using 59 PHA bins.
# Reduced chi-squared = 8.3075 for 56 degrees of freedom
# Null hypothesis probability = 7.831508e-66
Photon flux (15-150 keV) in 606.8 sec: 0.128599 ( -0.009855 0.009792 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.72299e-06 ( -1.93205e-07 1.94012e-07 ) ergs/cm2
Band function
Time interval is from -78.632 sec. to 528.124 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.34407 ( )
beta : -8.91643 ( )
Epeak [keV] : 47.7158 ( )
Norm@50keV : 1.08452E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 439.12 using 59 PHA bins.
# Reduced chi-squared = 7.9840 for 55 degrees of freedom
# Null hypothesis probability = 2.712769e-61
Photon flux (15-150 keV) in 606.8 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] : 4.44470 (-0.226979 0.242683)
R^2/D10^2 : 2.03426 (-0.524289 0.70801)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.28 using 59 PHA bins.
# Reduced chi-squared = 0.9523 for 57 degrees of freedom
# Null hypothesis probability = 5.776413e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.829e-06 1.690e-07
25- 50 8.833e-07 9.466e-08
50-150 1.964e-08 6.578e-09
15-150 2.732e-06 1.893e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.8956 (-0.971901 1.11166)
Norm : 4.06604 (-0.765847 0.954377)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.70 using 59 PHA bins.
# Reduced chi-squared = 1.135 for 57 degrees of freedom
# Null hypothesis probability = 2.256520e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.917e-06 1.614e-07
25- 50 9.223e-07 9.284e-08
50-150 7.929e-08 2.576e-08
15-150 2.918e-06 1.930e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.41149 (-0.249896 0.219584)
R1^2/D10^2 : 2.11021 (-0.444039 0.784448)
kT2 [keV] : 200.000 ( )
R2^2/D10^2 : 1.84699E-06 (-1.6759e-06 1.43808e-05)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.09 using 59 PHA bins.
#Fit statistic : Chi-Squared = 51.06 using 59 PHA bins.
# Reduced chi-squared = 0.9289 for 55 degrees of freedom
# Reduced chi-squared = 0.9283 for 55 degrees of freedom
# Null hypothesis probability = 6.247698e-01
# Null hypothesis probability = 6.260217e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.825e-06 1.705e-07
25- 50 8.872e-07 8.799e-08
50-150 3.029e-07 3.285e-08
15-150 3.015e-06 2.279e-07
Peak spectrum fit
Power-law model
Time interval is from -68.380 sec. to -67.380 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.94739 ( -0.899158 1.11353 )
Norm@50keV : 3.04528E-03 ( -0.00304486 0.00154959 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.56 using 59 PHA bins.
# Reduced chi-squared = 1.273 for 57 degrees of freedom
# Null hypothesis probability = 8.021624e-02
Photon flux (15-150 keV) in 1 sec: 0.446094 ( -0.179299 0.179326 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.80181e-08 ( -1.38589e-08 1.52678e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -68.380 sec. to -67.380 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.79582 ( )
Epeak [keV] : 251.407 ( )
Norm@50keV : 1.17616E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.87 using 59 PHA bins.
# Reduced chi-squared = 1.283 for 56 degrees of freedom
# Null hypothesis probability = 7.503440e-02
Photon flux (15-150 keV) in 1 sec: 0.445963 ( -0.179002 0.179194 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.36808e-09 ( -6.4638e-10 6.7443e-10 ) ergs/cm2
Band function
Time interval is from -68.380 sec. to -67.380 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.52187 ( 1.52307 1.52307 )
beta : -1.94728 ( 1.9476 0.898011 )
Epeak [keV] : 13.4508 ( -13.1832 -13.1832 )
Norm@50keV : 8.56122E-03 ( -0.00859756 10161.5 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 72.56 using 59 PHA bins.
# Reduced chi-squared = 1.319 for 55 degrees of freedom
# Null hypothesis probability = 5.644383e-02
Photon flux (15-150 keV) in 1 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] : 8.78999 (-4.83257 11.4278)
R^2/D10^2 : 0.313752 (-0.302263 8.06758)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.96 using 59 PHA bins.
# Reduced chi-squared = 1.333 for 57 degrees of freedom
# Null hypothesis probability = 4.738163e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.660e-09 3.127e-09
25- 50 9.542e-09 6.435e-09
50-150 3.385e-09 2.560e-09
15-150 1.759e-08 1.196e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 83.0068 (-83.866 -83.866)
Norm : 2.01832 (-0.969162 3.73329)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.28 using 59 PHA bins.
# Reduced chi-squared = 1.286 for 57 degrees of freedom
# Null hypothesis probability = 7.206259e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.249e-09 3.493e-09
25- 50 8.716e-09 5.980e-09
50-150 1.261e-08 1.087e-08
15-150 2.657e-08 1.920e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.04480 (-4.49575 5.19161)
R1^2/D10^2 : 1.27207 ( )
kT2 [keV] : 199.023 (-199.053 -199.053)
R2^2/D10^2 : 7.73342E-05 (-5.76614e-05 0.226184)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.88 using 59 PHA bins.
#Fit statistic : Chi-Squared = 71.86 using 59 PHA bins.
# Reduced chi-squared = 1.307 for 55 degrees of freedom
# Reduced chi-squared = 1.307 for 55 degrees of freedom
# Null hypothesis probability = 6.287084e-02
# Null hypothesis probability = 6.299827e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.545e-09 4.434e-09
25- 50 6.836e-09 4.279e-09
50-150 2.103e-08 2.389e-09
15-150 3.442e-08 1.185e-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: 3.31756 ( -0.240812 0.25963 )
Norm@50keV : 4.50074E-04 ( -9.56988e-05 0.000102915 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.84 using 59 PHA bins.
# Reduced chi-squared = 1.155 for 57 degrees of freedom
# Null hypothesis probability = 1.974716e-01
Photon flux (15-150 keV) in 91 sec: 0.157373 ( -0.015019 0.0150223 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.79015e-07 ( -6.41245e-08 6.61918e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.38841E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 186.04 using 59 PHA bins.
# Reduced chi-squared = 3.3222 for 56 degrees of freedom
# Null hypothesis probability = 7.290168e-16
Photon flux (15-150 keV) in 91 sec: 0.151225 ( -0.014842 0.014823 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.9784e-07 ( -5.15369e-08 5.32951e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.95970 ( -1.9269 -4.9597 )
beta : -4.79266 ( 4.79266 0.795613 )
Epeak [keV] : 20.1079 ( -1.39218 1.77644 )
Norm@50keV : 1079.99 ( -99.1555 1117.95 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.38 using 59 PHA bins.
# Reduced chi-squared = 0.7706 for 55 degrees of freedom
# Null hypothesis probability = 8.933673e-01
Photon flux (15-150 keV) in 91 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) = 9.17773e-07
S(50-100 keV) = 2.65822e-07
T90 vs. Hardness ratio plot
T90 = 549.491999924183 sec.
Hardness ratio (energy fluence ratio) = 0.289638
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.381086
Count Ratio (50-100 keV) / (15-25 keV) = 0.0188336
Mask shadow pattern
IMX = -1.994671495079161E-02, IMY = 1.059948513492607E-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:
-17.799400 73.200600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9741 -15.6079 0.8 29.7 -71.6 2.3081 13.8 2.0 Sco X-1
255.9724 -37.7862 2.4 20.9 -126.9 0.5250 4.7 3.5 4U 1700-377
256.2582 -36.2663 0.0 19.9 -123.6 0.1285 1.1 12.7 GX 349+2
262.9838 -24.8082 4.0 11.1 -86.9 0.3228 2.9 4.0 GX 1+4
264.6079 -44.5897 11.5 21.7 -152.9 -0.1110 -1.0 10.2 4U 1735-44
268.4954 -1.3008 25.6 24.2 -10.1 0.0527 0.4 11.9 SW J1753.5-0127
270.2203 -25.1164 4.0 4.5 -90.3 0.3111 2.9 4.1 GX 5-1
270.3667 -25.7275 5.3 4.5 -98.2 0.2431 2.3 3.6 GRS 1758-258
274.1340 -13.9903 5.6 10.7 0.9 0.2163 2.1 8.0 GX 17+2
276.0410 -30.2449 4.7 5.6 178.8 0.2590 2.4 9.5 H1820-303
284.9942 -24.9547 2.6 8.9 100.3 0.4632 4.4 3.1 HT1900.1-2455
288.8289 10.9849 1.9 38.1 28.5 1.2332 6.0 3.0 GRS 1915+105
263.0285 -33.8090 2.6 14.0 -127.2 0.4667 4.4 2.5 GX 354-0
296.0208 21.9181 2.6 50.8 31.6 2.5742 4.4 ------ UNKNOWN
290.8396 8.7836 3.2 36.8 32.9 0.6883 3.7 ------ UNKNOWN
268.6104 -26.3348 0.7 6.2 -100.7 1.6270 15.6 ------ UNKNOWN
255.2437 -41.6302 1.9 23.7 -134.2 0.6952 5.9 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
98.000590 963.084300
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9865 -15.6353 0.3 24.5 -68.6 25.5957 34.8 0.5 Sco X-1
256.0337 -37.8293 3.7 15.6 -140.2 1.8174 3.1 2.4 4U 1700-377
256.4349 -36.4398 4.2 14.5 -137.1 1.5839 2.7 1.0 GX 349+2
263.0354 -24.7356 2.6 5.3 -73.4 2.2414 4.4 1.6 GX 1+4
264.7511 -44.4524 4.2 18.4 -171.1 1.3194 2.8 0.4 4U 1735-44
268.4038 -1.4560 3.6 24.9 -0.3 1.7363 3.2 2.2 SW J1753.5-0127
270.3397 -25.0294 1.4 2.0 50.4 4.5414 8.3 4.2 GX 5-1
270.3820 -25.7577 2.4 1.7 70.4 2.5859 4.8 4.4 GRS 1758-258
273.9834 -14.0543 4.3 13.3 23.4 1.4406 2.6 1.7 GX 17+2
275.9232 -30.3869 2.3 7.6 124.1 2.5252 5.0 1.2 H1820-303
285.1508 -25.0157 4.7 14.9 88.7 1.4271 2.4 8.5 HT1900.1-2455
288.7852 10.9496 1.1 42.1 30.5 11.0998 10.3 0.8 GRS 1915+105
262.9671 -33.8381 2.0 8.9 -148.1 3.0774 5.7 1.1 GX 354-0
307.5688 -11.3298 3.5 39.6 75.4 6.6928 3.3 ------ UNKNOWN
284.7894 -0.8460 4.2 29.9 34.2 1.7632 2.8 ------ UNKNOWN
277.3835 -23.7746 2.0 8.3 74.2 2.9609 5.7 ------ UNKNOWN
277.3088 -83.1920 4.5 56.9 178.9 10.9706 2.6 ------ UNKNOWN
268.6069 -26.3339 0.7 0.0 -67.5 8.6538 15.6 ------ UNKNOWN
265.7631 28.2757 3.3 54.7 -2.9 5.8377 3.5 ------ UNKNOWN
255.7752 -48.8093 0.9 24.6 -159.2 6.5493 12.5 ------ UNKNOWN
255.2041 -41.6282 1.2 18.9 -147.4 4.9968 9.3 ------ UNKNOWN
UNKNOWN
UNKNOWN
UNKNOWN
UNKNOWN
Plot creation:
Thu Sep 12 18:17:49 EDT 2013