Incorrect price discovery in periodic call auction

In shares of SYTIXSE, there was an irregular price match in sixth session on 30th may. I have attached screenshot of it. Despite being huge buyer at 12rs, the price came out to be 11.25 and 50 quantity was traded. How could this happen when there is huge buyer at upper circuit. Can anyone please explain

Tough to figure out now, posting at that time would be of help, said that ideally there won’t be any mismatch from exchange side.

Today it also happened in nse.scrip name is TROM. From 9am it had huge seller on lower circuit at 140.05. Still opening price was 141.05

Likely it had buy orders also, maybe next time post with screenshot at same time you notice.