[{"ID":"1","Name":"Demo1","CheckList":{"CheckList1":{"Status":"OPEN","Comments":""},"CheckList2":{"Status":"DONE","Comments":"Completed"},"CheckList3":{"Status":"NA","Comments":""},"CheckList4":{"Status":"DONE","Comments":"Completed"},"CheckList5":{"Status":"NA","Comments":"not applicable"}}}]

db.collection.aggregate([{"$set":{"CheckList":{"$objectToArray":"$CheckList"}}},{"$match":{"$expr":{"$allElementsTrue":{"$map":{"input":"$CheckList.v","as":"cl","in":{"$or":[{"$and":[{"$eq":["NA","$$cl.Status"]},{"$eq":["","$$cl.Comments"]}]},{"$eq":["OPEN","$$cl.Status"]}]}}}}}},{"$set":{"CheckList":{"$arrayToObject":"$CheckList"}}}])