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WXcam Zarr

Path:

  • /data/aurora/products/wxcam/wxcam.zarr

Store purpose

The WXcam Zarr contains HDR JPG image data only. MP4 products are stored separately.

Root attributes

  • instrument = "wxcam"
  • title = "Aurora wxcam HDR images"
  • storage_policy = "Contains locally retained FISH HDR and PANO HDR JPG image data with timestamps derived from filenames; MP4 products are stored separately."

Root groups

  • fish_hdr
  • pano_hdr

The root Zarr group is only a container. Open one of these child groups to read image data and timestamps.

Group dataset structure

Each group stores one xarray dataset with:

  • dimensions: time, y, x, channel
  • coordinates:
  • time - UTC image timestamps
  • y - pixel row index
  • x - pixel column index
  • channel - RGB labels: R, G, B
  • data variables:
  • image[time, y, x, channel] - uint8 RGB pixel data
  • filename[time]
  • width[time]
  • height[time]
  • size_bytes[time]

Group geometry

When checked on 2026-05-21:

  • fish_hdr
  • shape: time=16068, y=3040, x=3120, channel=3
  • image geometry: 3120 x 3040
  • time coverage: 2026-05-02 00:00:00 to 2026-05-21 20:10:39
  • sorted unique time coordinate
  • chunks: (1, 1024, 1024, 3)
  • pano_hdr
  • shape: time=4710, y=750, x=2880, channel=3
  • image geometry: 2880 x 750
  • time coverage: 2026-01-12 02:25:00 to 2026-05-21 20:10:39
  • sorted unique time coordinate
  • chunks: (1, 750, 1024, 3)

Important note

The dashboard does not render WXcam directly from this Zarr:

  • interactive WXcam uses stitched MP4 products
  • science WXcam uses the SQLite catalog plus hourly thumbnail products

The Zarr is the retained HDR image archive for analysis and reproducible storage.