Thank you very much Guido,
I tried renaming the .DTT file to .ZIP. But  the renamed ZIP is damaged/ 
unable to open the ZIP file.


On Friday, March 3, 2017 at 2:09:13 PM UTC+5:30, Guido wrote:
> Raw data to your experiment is provided in an archive called a DTT.
> If you have a large amount of data, your DTT may be broken into several 
> pieces with extensions like DTT, D02, D03, etc. You must have all of the 
> files for a single set in order to read any of the data in them. If you do 
> not have GCOS, you can still extract the individual files in these 
> archives. First, you must rename the files. If you have only a DTT file, 
> rename it to .ZIP. If you have several files for a single archive, rename 
> the last file to .ZIP. That is, if you have three files in your set, 
> rename .D03 to .ZIP.Then proceed through the remaining files - .DTT should 
> become .Z01, .D02 should become .Z02, and so on until you have renamed all 
> of the files. You can now open the .ZIP file with any compressed file 
> software, and you should see the following two files for each sample:
>    - sample.DAT: The raw image of the microarray
>    - sample.CEL: The probe-level data for the array. These are the files 
>    most commonly used as "raw data" by analysis packages
> Modified from here 
> <>, found 
> using Google.
> HTH,
> G
> On Thursday, March 2, 2017 at 3:35:47 PM UTC+1, Renuka Kandhaya Pillai 
> wrote:
>> Hello all,
>> My zip file containing the raw data was corrupted. I managed to get 
>> contents of .DTT file.
>> I would like to know the tools/ steps to extract .CEL files from .DTT. 
>> thank you

When reporting problems on aroma.affymetrix, make sure 1) to run the latest 
version of the package, 2) to report the output of sessionInfo() and 
traceback(), and 3) to post a complete code example.

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