No, the coverage and SNP are in a separate data file.
Instructions to create this file:
There are two recommended file formats depending on your visualization needs:
1) TDF: this file format is the most space efficient and fastests, however, it only has coverage information.
see the TDF section in the link above
2) pileup: this file format has both coverage and diversity information. The diversity information is required to display the SNP track.
see the SAMtools pileup section in the link above