CSV writer does not work with ghost cells and it writes char data as actual chars
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
GIT as of 2010-05-04.
If your data set has ghost cells, it will write out the ghost cells, rather than culling them. This wouldn't be a problem if the vtkGhostLevel was correct. Though, the written field is not correct, and in my experience it is all 0s.
I can verify this against a VTU writer with the same data. A VTU writer does the correct thing, by culling ghost cells on output.
Additionally, if your data has a char field, it writes the data out as chars, rather than int strings, so if there is a 0, there is a null character in the output.