Sciences
Capture detailed observations. Keep them available for analysis.
Quasar is a database for experimental numerical and time-series data. Ingest instrument and sensor observations, preserve their numerical values, and query current and historical runs through APIs and SQL interfaces.
The Challenge: At the Bleeding Edge
Experimental data arrives at different rates and needs to remain interpretable.
Instruments, control systems, simulations, and environmental sensors produce observations at different rates and resolutions. Analysis needs both the values and the context that gives them meaning.
Raw files preserve an experiment’s output. Repeated analysis can also require searchable observations and metadata across runs.
Calibration, instrument state, and derived results need to be associated with the relevant observations. Otherwise, researchers spend time moving and reconciling data before they can investigate it.
Numerical fidelity and timestamp representation matter. The database needs to preserve the values and time information supplied by the acquisition system.
Clock synchronization, calibration, and scientific interpretation remain part of the acquisition and analysis workflow.
A data layer for experimental capture and analysis
At the National Laboratory of the Rockies, Quasar captures high-frequency voltage and current waveforms for research into data-center power systems.
The same database capabilities support retaining numerical observations and querying them across current and previous runs. The laboratory workload below provides a concrete example of Quasar’s role.
Research teams can use:
Continuous and burst ingestion
Low-frequency controls and high-frequency signals
Queries over source timestamps and recorded event history
Native timestamp support
Lossless storage for integers and floating-point values
Experiment metadata, calibration context, and observations
Analytical queries across current and previous runs
Delta4C adapts compression to the numerical structure of the data while preserving values bit for bit. The resulting physical storage footprint depends on the dataset.
Quasar supports nanosecond-resolution timestamps. For sub-nanosecond workloads, discuss the required precision, supported release, and feature availability with our engineers. Timestamp resolution describes how time is represented; source-clock accuracy and synchronization determine the quality of the timing information.
Analyze scientific signals inside and outside Quasar
Explore 201 million synthetic sensor measurements at mixed sampling rates. The demo combines SQL summaries inside Quasar with retrieval of raw observations for specialized spectral analysis outside the database.
Synthetic signals inspired by a fusion experiment. The local benchmark disables the database write-ahead log; performance figures describe that run.
Watch the demo ↗
High-frequency capture at NLR
Demonstrated capture configuration
The existing case study describes capture of voltage and current signals at roughly 10 kHz.
Ongoing work toward 50 kHz
We are working with NLR to increase the capture rate to 50 kHz.
A concrete research workload
The research captures waveforms from three-phase circuits powering compute racks to study data-center power systems.
Capture and analytical access
Quasar provides the database layer for ingesting, retaining, and querying the captured observations.
