ChIPseq-QC

Compute NSC/RSC cross-correlation and FRiP metrics from aligned BAMs and peak files.

12|3|Updated Nov 4, 2025
One-click install
npx skills add https://github.com/BIsnake2001/ChromSkills --skill chipseq-qc
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: ChIPseq-QC
Source: https://github.com/BIsnake2001/ChromSkills/tree/main/5.ChIPseq-QC
Command: npx skills add https://github.com/BIsnake2001/ChromSkills --skill chipseq-qc

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill provides QC metrics for ChIP-seq data by computing cross-correlation (NSC/RSC) and FRiP from aligned BAMs and called peaks, enabling assessment of ChIP data quality before downstream analysis.

Core Features & Use Cases

  • Cross-correlation analysis: calculates NSC and RSC to evaluate signal enrichment and data quality.
  • FRiP computation: estimates the fraction of reads within peak regions to gauge enrichment.
  • Output & workflow integration: organizes results under an all_chip_qc directory and supports integration with downstream QC reporting.

Quick Start

Run this skill after peak calling to produce QC metrics for your ChIP-seq BAM and peak files.

Frequently Asked Questions about ChIPseq-QC

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I calculate NSC and RSC cross-correlation metrics for ChIP-seq data?

You can calculate ChIP-seq cross-correlation metrics NSC and RSC by processing aligned BAM files to evaluate signal enrichment and data quality before downstream analysis.

What is FRiP computation and how does it work with called peaks?

FRiP computation estimates the fraction of reads within peak regions from aligned BAMs and called peak files, gauging ChIP-seq enrichment quality after peak calling.

When do I need to run ChIP-seq QC on filtered BAMs and peak files?

Run ChIP-seq QC on filtered BAMs and peak files when high-quality assessment is required post-alignment and after peak calling to validate signal enrichment before downstream analysis.

Does this ChIP-seq QC skill integrate with standard QC reporting workflows?

Yes, it organizes output results under an all_chip_qc directory structure and supports integration with standard QC reporting workflows for downstream analysis.

Can I use phantompeakqualtools metrics for ChIP-seq quality control?

The skill computes NSC, RSC, and FRiP metrics from aligned BAMs and peak files, providing the cross-correlation and enrichment values needed for ChIP-seq quality control.

What are the limitations of computing ChIP-seq QC metrics from BAMs and peaks?

This skill requires pre-aligned filtered BAMs and called peak files as input, meaning it cannot perform alignment or peak calling itself and only provides post-calling QC metrics.