A UX analyst as the name suggest has to shoulder the responsibility of analyzing the requirement of the client as well as the behavior of the users which could be incorporated in the design of the user interface.
Any UI is intended for the users and keeping in mind what they like and what not is the key to building a design that would most likely be lapped up by the end user. Thus, UX analyst or strategist has a very important job to do.
In bigger enterprises, there is a clear division of job and there are separate UX analysts, but in smaller organizations, UX analyst may be given the job of designing too. It is quite possible that creativity may be flawed, but may also turn out to be the other way round.
UX Analysts are specifically involved in the role that is more concerned with the usability requirements for a given website or web applications. After the users’ requirements are clear, the actual UI designs or prototypes are developed.