What are the colum headings for the deseq 2 output results
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Welcome @Anupam89
If you scroll all the way down on the DESeq2 tool form, into the Help section, there is a description of the columns. It is in a different orientation than the file, so maybe was missed!
I’ll paste that here for reference, too.
Hopefully this helps! 
Output
DESeq2 generates a tabular file containing the different columns and optional visualized results as PDF.
| Column | Description |
|---|---|
| 1 | Gene Identifiers |
| 2 | mean normalised counts, averaged over all samples from both conditions |
| 3 | the logarithm (to basis 2) of the fold change (See the note in inputs section) |
| 4 | standard error estimate for the log2 fold change estimate |
| 5 | Wald statistic |
| 6 | p value for the statistical significance of this change |
| 7 | p value adjusted for multiple testing with the Benjamini-Hochberg procedure which controls false discovery rate (FDR) |
By selecting Output sample size factors in the “Output options” selection box, the size factors used to normalize the samples can also be output as a tabular file.