Mask shadow pattern

IMX = -1.233120555355369E-01, IMY = -1.802365736885335E-01

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:
-728.859370 -709.246000
-239.360000 0.020000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4825 -40.5198    1.9  13.0  -87.0   1.4148   6.1    3.0	Vela X-1                      
 87.7110 -15.2716    3.4  40.9   32.8   1.7018   3.4 ------	UNKNOWN                       
178.1922  -0.4007    3.5  54.1 -179.4   3.2221   3.3 ------	UNKNOWN                       
113.0676 -43.6030    2.6  20.2  -30.0   1.0636   4.4 ------	UNKNOWN                       
188.2774 -11.3236    3.2  57.1 -161.7   4.3225   3.6 ------	UNKNOWN                       
190.7842 -12.5442    3.4  58.8 -159.2   6.2800   3.4 ------	UNKNOWN                       

Pre-slew background subtracted image of 15-350 keV band

Time interval of the image:
0.020000 10.940600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4177 -40.6336    6.7  13.1  -86.6  -0.0744  -1.7    6.9	Vela X-1                      
159.4470   2.1045    2.5  41.8  161.2   0.3792   4.6 ------	UNKNOWN                       
132.1712 -16.3427    0.7  12.3  124.4   0.6954  17.6 ------	UNKNOWN                       
168.6909  -7.9452    2.2  42.1 -178.4   0.3491   5.2 ------	UNKNOWN                       
 69.3943 -51.7204    2.8  49.9  -22.2   0.3701   4.2 ------	UNKNOWN                       
140.2822 -68.2415    2.1  40.3  -73.0   0.7187   5.5 ------	UNKNOWN                       

Post-slew image of 15-350 keV band

Time interval of the image:
44.140620 838.585900
840.640000 962.680000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4329 -40.5418    1.8  24.3  -76.0   4.7432   6.5    4.4	Vela X-1                      
 92.4733  -4.0935    2.8  40.9   33.0   4.4669   4.1 ------	UNKNOWN                       
 79.2750 -18.5847    3.1  50.3    9.1   5.3358   3.8 ------	UNKNOWN                       
164.3697  -3.6151    2.8  34.1 -178.5   3.0126   4.2 ------	UNKNOWN                       
159.9292 -32.0413    2.9  29.6 -123.0   2.9901   3.9 ------	UNKNOWN                       
170.4299 -44.4805    3.3  42.7 -110.7  10.1817   3.5 ------	UNKNOWN