Hey there
Himalayan University Itanagar Arunachal Pradesh is certified by UGC and thus it's degree will be valid in UPSC. The simple eligibility criteria of UPSC is graduation and thus graduation from any valid University is applicable for UPSC.
Check about Himalayan University
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/university/himalayan-university-itanagar/amp&ved=2ahUKEwij7umO5qXpAhXkzzgGHad6CbkQFjAAegQICBAD&usg=AOvVaw0WPybk4G3B-lNH0Kd-eR71&cf=1
Good luck
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