Probing and Analyzing MIPI CSI 2 Interface
I am not at all sure that the 16802A goes fast enough for 4k, and it certainly will not have sufficient memory to capture a whole frame in timing mode. 

Mind you, usually a logic analyser has very sophisticated trigger setup, so you should be able to capture just the transaction you are interested in, there is probably no need to try to capture the whole frame. 

The real answer as always depends on exactly what you are trying to see.