cittānupassanā: 'contemplation of consciousness', is one of the 4 Foundations of Mindfulness (Satipaṭṭhāna, q.v.)

Buddhist Dictionary, Manual of Buddhist Terms and Doctrines, by NYANATILOKA MAHATHERA

cittānupassanā : [(citta + anupassanā), f.] a critique of heart.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]