Channels — single-channel detail #

URL: /channels/{channel_id}

The drill-down view for a single channel. Shows the channel's descriptor, a full time-series chart (decimated for large series), and a raw-data table — all filterable by session and date range.

You reach this page by clicking a row in /channels.

A page header showing the channel ID + a Back button (returns to the channels list).

If the channel ID in the URL isn't registered, the page shows a "Channel <id> is not registered." card with a link back to /channels.

Descriptor card #

Below the header, a card summarises the channel's static metadata: the data type, units, the instrument role and resource it belongs to (when set), and the first-seen timestamp. Any recorded attributes appear below when present.

Filters #

A filter card sits above the chart and data table with Since / Until date pickers (default to no bounds — full history) and an X-axis toggle between absolute time and elapsed offset.

Session scoping isn't a picker here: when you arrive from a run's detail page with a session in the URL, a banner shows it with a Clear button. To see one session's samples, reach this page from that run.

Chart #

Time-series chart of the filtered samples. Litmus decimates large series to ~1,000 points (LTTB) so the chart stays responsive even for long-running captures. The visible decimation preserves visual shape: peaks and troughs at their original positions, intermediate points dropped.

For array / waveform channels (e.g. scope captures), the chart switches mode automatically: the 10 most recent captures overlay in fading blue (newest darkest), and older captures collapse into a gray min/max envelope behind them. This gives you an eye-diagram- style view — the latest capture stands out, the historical envelope shows drift over time.

Data table #

Below the chart, a paginated table of the same data — same filters, no decimation. Columns: Received, Value, Source, and Session (shown as the UUT serial + run start, not a UUID). Useful for copying specific (timestamp, value) pairs into a notebook or for spotting outliers the chart's decimation smoothed over.

Bookmarkable URL state #

Parameter	Meaning
`session_id`	Session scope (set by a deep-link from a run)
`since`	Earliest sample timestamp
`until`	Latest sample timestamp
`x_mode`	X axis: `time` (absolute) or `offset` (elapsed)

Bookmark the URL to share a specific channel + filter combination.

Underlying data #

The samples shown here come from the channel store. The chart is decimated to ~1,000 points; the raw-data table is not.

For the storage layout, see Concepts → Data stores.