---
id: dttlib
version: "0.10.9"
license: unclear
license_treatment: unclear
maintenance: active
---

# dttlib — Advanced LIGO core library for online and offline frequency-domain diagnostics tool.

License: unclear · Maintenance: active · Downloads: 120.3K/mo

## What it is and what it does

dttlib is a Python wrapper around LIGO's core diagnostic and analysis library, providing frequency-domain tools for processing gravitational wave detector signals. It integrates with LIGO's standard C libraries (libcds, libgds-sigp) and uses FFTW for fast Fourier transforms, enabling both online and offline analysis workflows. The package targets researchers and engineers working with LIGO data who need FFT-based diagnostics and swept-sine measurements.

The package has medium install friction because it depends on several system-level C libraries that must be pre-installed and available in the build environment. It supports Python 3.9 and later across macOS ARM64 and Linux x86_64 platforms via pre-built wheels. No runtime Python dependencies are declared, keeping the runtime footprint minimal once the C libraries are satisfied.

Use it for:

- Perform real-time frequency-domain diagnostics on LIGO detector signals during observation runs
- Analyze archived LIGO data offline using FFT-based methods for signal characterization
- Conduct swept-sine measurements to characterize detector response across frequency bands
- Integrate frequency-domain analysis into LIGO data pipelines and monitoring systems

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

dttlib provides frequency-domain analysis tools for LIGO gravitational wave detector data, supporting FFT-based diagnostics and swept-sine measurements.

Yes, if you work with LIGO data and have the required C libraries available. The package is actively maintained, has no known vulnerabilities, and fills a specialized role in gravitational wave data analysis. The main barrier is satisfying system C dependencies and the unclear license status—verify licensing compatibility before use in restricted contexts.

## Install

pip install dttlib
uv add dttlib
poetry add dttlib

## Installing dttlib

Before you install: Medium install friction due to compiled C dependencies (libcds, libgds-sigp, libfftw3, libglib-2.0, libstdc++, libsasl2, libz, libexpat) that must be available on the system. Package is actively maintained with recent releases.

License in practice: License status is unclear—no SPDX identifier or raw license text is available in the package metadata. Verify licensing terms before use in proprietary or commercial contexts.

Quickstart:

pip install dttlib
import dttlib
# Use dttlib for LIGO frequency-domain diagnostics

Requires system C libraries: libcds, libgds-sigp, libfftw3, libglib-2.0, libstdc++, libsasl2, libz, libexpat. Python >=3.9 required.

Verify before relying:

- Specific API surface and available functions for frequency-domain analysis beyond FFT and swept-sine
- Whether diaggui integration is a separate tool or included in dttlib
- Performance characteristics and typical data volume handling
- Community adoption and usage patterns within LIGO collaboration

## Package facts

- License: not declared (unclear)
- Python support: supports_current
- Install friction: medium
- Maintenance: active
- Downloads: 120.3K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

LIGO frequency domain analysis, gravitational wave data processing, FFT diagnostics tool, swept-sine measurement, detector signal analysis, ligo-data, signal-processing, physics

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