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 # Sanity check of subtraction with an arbitrary predicted waveform.
 
-Because the subtraction is made by dividing the segments and find the amplitude and phase by the least square method,I am concern with what if I use an arbitrary predicted waveform. Do I get no subtraction? 
+Because the subtraction is made by dividing the segments and find the amplitude and phase by the least square method,I am concern with what if I use an arbitrary predicted waveform. Do I get no subtraction as wished because the glitch waveform differs from the true glitch waveform? 
 
 # test waveform 0
 
@@ -14,4 +14,7 @@ plt.close()
 
 ![Screen_Shot_2021-03-16_at_6.44.03_PM](uploads/d9550136ed86e03205ef810bcf287263/Screen_Shot_2021-03-16_at_6.44.03_PM.png) 
 
+- Yes, no subtraction. 
+
+![Screen_Shot_2021-03-16_at_6.57.16_PM](uploads/8992e1233454c7f6b69a4b569b470196/Screen_Shot_2021-03-16_at_6.57.16_PM.png)