Chit-Tapas or Consciousness-Force, in Sri Aurobindo's philosophy refers to the pure energy of Consciousness by which creation ultimately comes about; the infinite divine self-awareness which is also the infinite all-effective Will. It is also one of the seven planes of existence, according to the Vedic cosmology and the seven lokas of Hindu thought.
In chapter 10 of The Life Divine, Sri Aurobindo writes at length on the nature of Consciousness-Force as a principle of the Divine. As he understands it (following the Tantric dichotomy of Shiva and Shakti), Chit or Consciousness is not an inert and passive principle; but contains the potential spiritual Energy, Tapas, which in Creation becomes the dynamic and creative principle or Force, called Shakti. Chit-Tapas or Chit-Shakti is therefore the universal Consciousness-Force, the divine Energy; the Mother.