Facing misplotting with kibana

I am using ELK stack to visualize logs. I am facing weird plotting on
kibana with respect to my logs. Kibana is plotting a value for a timestamp
which doesn't exists in my logs. Its not a single time, its observed
frequently with frequent intervals.

I have attached the screenshots for the same. It will be really helpful if
anybody faced the same issues and has any inputs.

Please let me know if there is any issue understanding the question.

Thanks!
Shriyansh

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