did you maybe already apply topographic phase removal during interferogram formation?
By the way, an interferogram from a pair with such a long temporal baseline (2017 to 2020) will probably not give you any reliable results anyway, because of temporal decorrelation.
Thank you Sir unfortunately I did not apply the topographic phase removal during the interferogram process. And I am going to stack starting from 2014-2021 for road design and when I am going to add all 23 images on back geocoding, and look in the manuals how to process PS-InSAR it recommends maximum 13 interferogram and minimum 4 interferograms. Then I took the average one 11 interferogram and starting to process. 2017 is my Master images selected by using stack Over and Optimal InSAR Master selection method from the machine. And durimg processing this
your screenshot looks like you combined images of two different tracks, is this the case?