Atma is always Sat-Chit-Ananda. Of these, the first two are experienced in all the states, whereas the last one is said to be experienced in sleep only.

Ramana Maharishi:  Vairagya is possible only for the wise. However, it is often misapplied  by the common folk. For instance, a man often says “I have determined not to go to cinema shows.” He calls it vairagya. Such wrong interpretation of the words and old sayings are not uncommon. Again, we often hear, “Dog seen, stone is not seen; stone seen, dog is not seen.” It is ordinarily understood to mean that one cannot find a brickbat to throw at a stray dog. But this popular saying has a much deeper significance. It is based on a story: A certain wealthy man’s house was closely guarded. It had also a ferocious dog chained to a pillar at the gate. The dog and the chain were however very skilful pieces of art. They were sculptured in stone but appeared life-like. A pedestrian on the road once took fright at the sight of the ferocious animal and hurt himself in his attempt to dodge it. A kindly neighbour took pity on him and showed him that it was not a living dog. When the man passed by it the next time he admired the skill of the sculptor and forgot his old  experience. Thus when he found it to be a dog, he could not see the stone of which it was made; and again when he found it a piece of sculpture he did not see any dog to hurt him. Hence the proverb. Compare it with ‘The elephant hides the wood and the wood hides the elephant.’ Here it is a wooden elephant. Atma is always Sat-Chit-Ananda. Of these, the first two are experienced in all the states, whereas the last one is said to be experienced in sleep only. The question arises how the true nature of the Self can be lost in the waking and dream states. It is, really speaking, not lost. In sleep there is no mind and the Self shines as Itself, whereas in the other two states what shines forth is the reflected light of the Self. Ananda is felt after the cessation of thoughts in sleep. It is also manifest on other occasions as love, joy, etc., priya, moda and pramoda. But they
are all chitta vrittis (modes of mind). When a man is walking in the street his mind is full of fleeting thoughts. Suppose he passes a bazaar where some fine mangoes are for sale. He likes the mangoes and purchases them. He is next anxious to taste them. So he hastens home and eats them and feels happy. When the fleeting thoughts give way to the pleasure at the sight of mangoes, it is priya, when he gets them as his own, the pleasure is moda; lastly, when he eats them, the pleasure is pramoda.
All the three kinds of pleasure are owing to the disappearance of other thoughts.