comparison between raw counts and log TPM values

Hello there,

I downloaded first the log TPM values and plotted them for a specific gene and found that it is expressed. Then, I have to use another normalization method and downloaded the raw counts. Checking the raw counts of this exact same gene in the same cell line, I found it zero.

How can this be explained?

the files I downloaded: OmicsExpressionTPMLogp1HumanAllGenes.csv and OmicsExpressionRawReadCountHumanAllGenesStranded.csv.

Thank you in advance.