[wfc] Re: Next: Checksum proposal (revisited)

[Arne Henden]

Rob, our of the "several million" frames, how many had
errors that were caught with the checksum?  And on what media?
Arne

Rob Seaman wrote:
> Arne says:
> 
> 
>>After handling several hundred thousand CCD frames, the only ones
>>I found corrupted were *really* corrupted and were obvious.
> 
> 
> And after handling several million CCD and IR frames, checksum
> verification has left me quite confident that those files were not
> corrupted.  A checksum is precisely a mechanism for making subtle
> corruptions more obvious.  Files that pass verification benefit from
> the added level of trust - an added value perhaps even greater than
> the detection of the rare failures.