FAQs
Here are our answers to some frequently asked questions from users.
I never received an account invitation email. What should I do?
Please check your spam inbox. If you still don't see the invitation email, reach out to [email protected] for assistance.
Can I browse the catalog even if I haven't ordered any data?
Yes! Please email [email protected] requesting a demo account.
You can also check out our Open Data Program, which you won't need an account to access.
What is STAC?
STAC stands for "SpatioTemporal Asset Catalog". It's a standardized framework for indexing, cataloging, and describing geospatial data. It makes Hydrosat data easier to work with, especially if you're integrating it with data from other sources.
What do the different assets in a STAC item represent?
Each STAC item includes several assets representing the individual data and metadata files associated with the scene. Items from different collections have different assets, as defined below and on our Product Details page.
I only see thumbnail assets for certain scenes. Where's the rest of the data?
You have full access to the scenes you've ordered and thumbnail access to the rest of the catalog.
What do the different values in the cloud mask mean?
The cloud mask encodes information about clouds, cloud shadows, and snow present within each pixel.
Specifically, the cloud mask contains bit-packed pixel values; each pixel value is a decimal representation of binary strings, in which each bit represents a different condition.
For simplicity, we recommend using the look-up table below. The table displays common pixel values and their meanings.
If you see a value of 2 in the cloud mask, for example, this would indicate cloudy conditions.
You can also review our how-to guide on using the cloud mask for additional information.
How can I use Hydrosat data with Google Earth Engine?
We recommend using the Google Earth Engine Python API along with the xee extension to smoothly integrate the two data sources.
I want to learn more about Hydrosat's data products. Where can I find more information?
You can find additional details in our product guide. Please reach out to your organization point of contact if you don't already have this document.
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