STAC extensions

Learn about UP42-specific STAC extensions.


Overview

STAC is extensible, being a network of JSON files that follow corresponding specifications. A STAC extension is a JSON schema with additional parameters available for a specific STAC collection or a STAC item. For more information, see STAC Extensions.

STAC extensions contain descriptions of parameters with {prefixes}:. UP42 has its own platform-specific extensions.

UP42 system extension

ParameterOverview
up42-system:sourcestring
The source of data. The allowed values:
  • ARCHIVE
  • TASKING
  • ANALYTICS
  • PLATFORM
  • USER
up42-system:account_idstring
The account ID.
up42-system:asset_idstring
The UP42 asset ID.
up42-system:workspace_idstring
The user workspace ID.
up42-system:metadata_versionstring
The metadata version.

UP42 product extension

ParameterOverview
up42-product:
data_type
string
The type of data. The allowed valued:
  • raster
  • vector
  • pointcloud
up42-product:
modality
string
The modality of data that depends on the data type. For example, multispectral or hyperspectral.
up42-product:
collection_name
string
The geospatial collection name.
up42-product:
product_id
string
The product ID.

UP42 user extension

ParameterOverview
up42-user:titlestring
A custom title added to the corresponding UP42 asset in storage.
up42-user:tagsstring
Tags added to the corresponding UP42 asset in storage.

UP42 order extension

ParameterOverview
up42-order:idstring
The order ID.
up42-order:statusstring
The status of the order. The allowed value is FULFILLED.
up42-order:host_idstring
The provider order ID.

Sentinel-2 extension

ParameterDescription
sentinel:
sequence
string
The version number of the data. Values other than 0 mean that this is either a processed version of the scene or another image taken for that tile on a given date.
sentinel:
utm_zone
integer
The UTM longitude zone.
sentinel:
product_id
string
The original product ID. For more information, see Sentinel-2 naming convention.
sentinel:
grid_square
string
A two-letter code indicating a particular 110×110 km region inside the UTM grid zone.
sentinel:
data_coverage
integer
The percentage of the scene covered by valid data pixels, that is, not NoData values.
sentinel:
latitude_band
string
A letter indicating the scene's latitude band. Beginning at 80°S and proceeding northward, the 20 bands are lettered C through X, omitting I and O. The bands are all 8° high except band X, which is 12° high.
sentinel:valid_
cloud_cover
boolean
Whether the eo:cloud_cover parameter is valid.
sentinel:boa_
offset_applied
boolean
Whether the –0.1 offset added by ESA after January 25, 2022 was applied to the cloud optimized GeoTIFF. For more information, see Sentinel news.
sentinel:
processing_
baseline
string
The version of the Ground Image Processing Parameters used by ESA to process the raw Sentinel-2 data into Level-1C and Level-2A products. For more information see, Sentinel-2 processing baseline.