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SynchWeb / ISPyB Guide
Once data collection starts, ISPyB/Synchweb gives you a real-time view of everything coming off the beamline — images, snapshots, and the metrics that go with them.
You can reach data collections from the ISPyB/Synchweb home page (which shows your previous and upcoming visits) or from the Visits page (which lists all visits under the current proposal). Click into a visit to see its data collections.
A progress bar at the top of the visit page shows how your beamtime has been used, color-coded by activity: start-up, data collection, auto-indexing, centring, robot actions, thinking time, and time remaining. A Visit Statistics button opens a fuller dashboard — timeline graphs, a per-protein breakdown, beamline parameter changes over the visit, hourly collection rates, robot/dewar usage, and a log of any faults or callouts during the session.
Spending a lot of time in "thinking" isn't automatically a problem, but if it's adding up, talk to your Local Contact or LS-CAT staff about strategies — queuing up collections in advance is often the biggest win.
The toolbar at the top of a visit's data view gives you quick access to:
| Button | What it does |
|---|---|
| Assign Containers | Match puck positions to robot dewar positions ahead of your session. |
| Summary | Every data collection in the visit — sample, energy, detector distance, spacegroup, unit cell, resolution, completeness, Rmeas/CC½/CCanom. Filterable and sortable. |
| Autoprocessing | Which autoprocessing pipelines have run, with the option to reprocess. |
| Visit Status | Jumps to the visit statistics summary. |
| Users | Hover to see who's on the visit. Added via your LS-CAT proposal access. |
| Dewars | Hover to see which dewars are assigned to the visit. |
| Sample Changer | Visual map of pin status: grey (not loaded), red (screened only), orange (data collected, no autoprocessing), blue ring (autoprocessing not yet run), green ring (autoprocessing complete). |
| Reprocessing | Resubmit automated processing with different parameters — see Automated Processing. |
| Beamline Status | Current beamline status and webcams for the visit. |
Buttons above the data list let you filter to a specific kind of experiment; click again to clear the filter. Available views include:
Completed collections, excluding fluorescence scans and robot loads.
Grid scan previews with a diffraction heatmap (spot count or Bragg-spot count from DIALS, toggleable).
Complete data collections only, no auxiliary measurements.
Datasets where autoprocessing successfully integrated.
Datasets where a phasing pipeline completed successfully.
Datasets where autoprocessing failed.
Screening datasets specifically.
Sample loading events, with environment and loop images.
Actions like washing or annealing performed on a sample.
Items you've starred, for quick reference later.
Clicking through to a sample from a data collection opens its summary: information supplied before collection, links to view all samples from the same protein, dewar and shipment context, and the option to edit sample properties (handy when preparing to reprocess). Below that you'll find every data collection, grid scan, and robot load associated with that sample, using the same experiment-type filters described above.
A left-hand panel on each data collection shows the collection settings that produced it:
| Flux | Photons per second at the sample. |
| Ω Start / Ω Osc | Starting angle and degrees of oscillation per image. |
| No. Images | Total images collected. |
| Resolution | Obtainable resolution given the detector's position. |
| Wavelength / Exposure / Transmission | Collection wavelength, exposure per image, and transmission relative to beamline maximum. |
| Beamsize | Requested beam size (H × V, microns). |
| Comment | Free-text notes relevant to the sample or collection, including any centring issues. |
Click a preview image to open the interactive image viewer, which supports adjustable thresholding and full-screen viewing with optional ice-ring markers. These previews are lossy JPEGs meant for a quick look, not for resolution assessment — and if raw data is no longer on disk, the preview may be all that's left.
For a proper look at diffraction images, use one of the dedicated viewers on the beamline workstations: exact invocation to be confirmed for the LS-CAT environment
| Viewer | Good for |
|---|---|
| DIALS image viewer | dials.image_viewer *master.h5 |
| ADXV | adxv *.h5 |
| ALBULA (DECTRIS) | PILATUS and EIGER detector data |
With today's fast, fine-sliced detectors, a single image often shows very few spots — viewing several images together as a slab usually gives a much better sense of the diffraction.
Crystal snapshots (optical camera images) are viewable the same way, showing the centered crosshair and expected beam profile. Sample actions (washing, annealing) and robot loads each get their own set of documentation images too.
This plot tracks three things across a dataset, image by image: total spots found (yellow), spots identified as Bragg diffraction (blue), and an estimated resolution (red). Spot-finding uses DIALS; a resolution reading of −1 usually means too few spots to make an estimate, or a real data quality problem. A dip-and-recovery pattern often indicates sample rotation; a steady decline in spot count across the full rotation is a sign of radiation damage — cross-check against the radiation damage plot.
Click the chain icon next to a dataset to generate a permanent link (it appears in your browser's address bar). Unlike most links inside a visit, a permalink won't change over time, so it's the right one to share with a collaborator on the same proposal or with LS-CAT staff.