All of the paintings in the upper part of the apse are by Domenichino. At the sides of the three windows are six Virtues. Over each of the two lateral windows are two naked figures, wreathing a festoon of fruits, from which children have taken some pears, alluding to the Peretti family, to which Cardinal A. Peretti, who ordered the work, belonged. In the center between the two lateral windows is a painting of St. Andrew and St. John, the son of Zebadee, and St. John the Baptist, who sees the coming Redeemer. Over the central window is Christ calling St. Perer and St. Andrew. Over the window to the left of center is the Flagellation of St. Andrew. Over the window to the right of center is the Martyrdom of St. Andrew. In the semicircle in the center is St. Andrew in Glory.

(See another photo of the ceiling on the web here)