Sound-out: 卡 → 'Ka-,' 提 → '-ti-,' 娅 → '-ya/-yah' (the 女 radical in 娅 marks it as a feminine-name character, paired with the audio 亚). Together: Katya, a Russian/Slavic diminutive of Yekaterina (Catherine), or the Italian/Portuguese 'Katia/Catia.'
culture
Standard rendering of the name in subtitles and translated novels - almost always indicates a Slavic, Eastern European, or Italian female character. The mainland-standard alternate is 卡佳.