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DS90UB954-Q1: How to compare between good and bad Deserializer chip

Part Number: DS90UB954-Q1

I am having few doubts and let me put in order;

1). I am getting more CSI-error counts, parity errors and capture errors at the beginning when the link is up. When it keeps running over long duration the errors keeps reducing. Is there any facts regarding this?

2). In some of the chip CSI-error counts, parity errors and capture errors are intermittent. Is it due to SW glitch or is it related bad deserializer. 

3). Is there any default values or expected errors that I should be seeing every-time when I use this chips.