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Users of the current PS1 DR2 data should be aware of a few issues and inconsistencies in the data.
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Missing data
The current version of the database (released 2019 January 28) is missing data over about 1.1% of the survey (346 square degrees). The missing regions lie in areas where either no sources were ingested into the ObjectThin table (only ~1.5 sq deg), where the StackObjectThin objects were not added (~4.1 sq deg), or where the MeanObject objects are missing (~341 sq deg). For the stack objects, the object entries are missing in ObjectThin, but they are present in StackObjectThin (and other stack tables). For the missing mean objects, the problem is that there are entries in ObjectThin but the corresponding magnitude information is missing from MeanObject. The effective result is that the objects do not show up in searches if any magnitudes or other properties are required (which is the usual case.)
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