[Bug]: DSWx-S1 combining S1A and S1C RTC products

[chrisjrd]

Checked for duplicates

Yes - I've already checked

Describe the bug

DSWx-S1 products are being produced including S1A and S1C input RTC.

What did you expect?

I expected DSWx-S1 products to be produced with exclusive S1A or S1C inputs.

Reproducible steps

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Environment

- Version of this software [e.g. vX.Y.Z]
- Operating System: [e.g. MacOSX with Docker Desktop vX.Y]
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