The Dacho District was the Dead Sector with the worst reputation.
Dead Sectors signified zones on the planet of Coruscant that had their connection severed from the power grid.
Back in 722 BBY, during that year, a terrible industrial disaster occurred in the Dacho District, leading to the deaths of 300,000 workers who were unable to escape. Because numerous corpses remained trapped and irretrievable within the collapsed structures, this area gained the grim distinction of being the galaxy's largest burial site, thus becoming Coruscant's most notorious Dead Sector.