# analysis Analysis results, run on an imaging study level. Can contain files, directories, and variables.

### JSON variables :blue\_circle: Primary key\ :red\_circle: Required\ :yellow\_circle: Computed (squirrel writer/reader should handle these variables)


Variable	Type	Default	Description
`DateStart`	date	🔴	Datetime of the start of the analysis.
`DateEnd`	date		Datetime of the end of the analysis.
`DateClusterStart`	date		Datetime the job began running on the cluster.
`DateClusterEnd`	date		Datetime the job finished running on the cluster.
`Hostname`	string		If run on a cluster, the hostname of the node on which the analysis run.
`PipelineName`	string	🔴 🔵	Name of the pipeline used to generate these results.
`PipelineVersion`	number	`1`	Version of the pipeline used.
`RunTime`	number	`0`	Elapsed wall time, in seconds, to run the analysis after setup.
`SeriesCount`	number	`0`	Number of series downloaded/used to perform analysis.
`SetupTime`	number	`0`	Elapsed wall time, in seconds, to copy data and set up analysis.
`Status`	string		Status, should always be ‘complete’.
`StatusMessage`	string		Last running status message.
`Successful`	bool		Analysis ran to completion without error and expected files were created.
`Size`	number	🟡	Size in bytes of the analysis.
`VirtualPath`	string	🟡	Relative path to the data within the package.