Why didnt William get his barons collect the information for the doomsday book?

William the Conqueror did not have his barons collect the information for the Domesday Book because he wanted a centralized and authoritative account of his new kingdom's resources and population. By personally overseeing the survey, he ensured the data was comprehensive and accurate, reflecting the true state of landownership and wealth in England after the Norman Conquest. This approach also helped consolidate his power and establish control over his newly acquired territories.