Pataka Is A Hindi Word For Flag (English) Or Dhwaja (Sanskrit). This Pataka Or Dhwaja Is Unfurled At The Top Of Shikhar Of A Mandir. Pataka Or Dhwaja Is A Very Important Part Of Dressing Of A Mandir. There Is A Shlok In This Regard.

sikharam Shreershamithyaahuh Garbhageham Galam

yatha Mantamapam Kukshirithyahuh Praakaaram

jaannjamghayoh Gopuram Padam Ithyaahuh

Dhwaja Jeevassamuchyathe

this Shows The Importance Of Dhwaja In A Mandir. It Is Also A Shubhshakun To See A Flying Dhwaja At Shikhar Of A Mandir

brass Dhwaja Is Used For The Reason That It Is Permanent And Looks Majestic.