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Report generated at 2022-09-03 05:13:25

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	149378184	126123212
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	146575673	123585796
Mapped(QC-failed)	0	0
% Mapped	98.1200	97.9900
Paired	149378184	126123212
Paired(QC-failed)	0	0
Read1	74689092	63061606
Read1(QC-failed)	0	0
Read2	74689092	63061606
Read2(QC-failed)	0	0
Properly Paired	145393476	122490924
Properly Paired(QC-failed)	0	0
% Properly Paired	97.3300	97.1200
With itself	145972066	122901660
With itself(QC-failed)	0	0
Singletons	603607	684136
Singletons(QC-failed)	0	0
% Singleton	0.4000	0.5400
Diff. Chroms	155757	61311
Diff. Chroms (QC-failed)	0	0

Marking duplicates (filtered BAM)

Filtered out (samtools view -F 1804):

read unmapped (0x4)
mate unmapped (0x8)
not primary alignment (0x100)
read fails platform/vendor quality checks (0x200)
read is PCR or optical duplicate (0x400)

	rep1	ctl1
Unpaired Reads	0	0
Paired Reads	64217827	52026374
Unmapped Reads	0	0
Unpaired Dupes	0	0
Paired Dupes	7356650	1378590
Paired Opt. Dupes	9689	7099
% Dupes/100	0.1146	0.0265

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Read Pairs	64215656	51966555
Distinct Read Pairs	56859249	50590836
One Read Pair	50227665	49267292
Two Read Pairs	5972658	1284538
NRF = Distinct/Total	0.8854	0.9735
PBC1 = OnePair/Distinct	0.8834	0.9738
PBC2 = OnePair/TwoPair	8.4096	38.3541

Mitochondrial reads are filtered out.

NRF (non redundant fraction)
PBC1 (PCR Bottleneck coefficient 1)
PBC2 (PCR Bottleneck coefficient 2)
PBC1 is the primary measure. Provisionally

0-0.5 is severe bottlenecking
0.5-0.8 is moderate bottlenecking
0.8-0.9 is mild bottlenecking
0.9-1.0 is no bottlenecking

Flagstat (filtered/deduped BAM)

Filtered and duplicates removed

	rep1	ctl1
Total	113722354	101295568
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	113722354	101295568
Mapped(QC-failed)	0	0
% Mapped	100.0000	100.0000
Paired	113722354	101295568
Paired(QC-failed)	0	0
Read1	56861177	50647784
Read1(QC-failed)	0	0
Read2	56861177	50647784
Read2(QC-failed)	0	0
Properly Paired	113722354	101295568
Properly Paired(QC-failed)	0	0
% Properly Paired	100.0000	100.0000
With itself	113722354	101295568
With itself(QC-failed)	0	0
Singletons	0	0
Singletons(QC-failed)	0	0
% Singleton	0.0000	0.0000
Diff. Chroms	0	0
Diff. Chroms (QC-failed)	0	0

Peak calling

Reproducibility QC and peak detection statistics

The number of peaks is capped at 300K for peak-caller MACS2

	overlap
Nt	0
N1	89900
Np	0
N optimal	89900
N conservative	89900
Optimal Set	rep1-pr
Conservative Set	rep1-pr
Rescue Ratio	0.0000
Self Consistency Ratio	1.0000
Reproducibility	pass

Overlapping peaks

N1: Replicate 1 self-consistent overlapping peaks (comparing two pseudoreplicates generated by subsampling Rep1 reads)
N2: Replicate 2 self-consistent overlapping peaks (comparing two pseudoreplicates generated by subsampling Rep2 reads)
Nt: True Replicate consisten overlapping peaks (comparing true replicates Rep1 vs Rep2 )
Np: Pooled-pseudoreplicate consistent overlapping peaks (comparing two pseudoreplicates generated by subsampling pooled reads from Rep1 and Rep2 )
Self-consistency Ratio: max(N1,N2) / min (N1,N2)
Rescue Ratio: max(Np,Nt) / min (Np,Nt)
Reproducibility Test: If Self-consistency Ratio >2 AND Rescue Ratio > 2, then 'Fail' else 'Pass'

Enrichment

Strand cross-correlation measures

Performed on subsampled reads (15M)

	rep1
Reads	15000000
Est. Fragment Len.	195
Corr. Est. Fragment Len.	0.1744
Phantom Peak	50
Corr. Phantom Peak	0.1852
Argmin. Corr.	1500
Min. Corr.	0.1698
NSC	1.0266
RSC	0.2935

NOTE1: For SE datasets, reads from replicates are randomly subsampled.
NOTE2: For PE datasets, the first end of each read-pair is selected and the reads are then randomly subsampled.

Normalized strand cross-correlation coefficient (NSC) = col9 in outFile
Relative strand cross-correlation coefficient (RSC) = col10 in outFile
Estimated fragment length = col3 in outFile, take the top value

Fraction of reads in overlapping peaks

	rep1-pr
Fraction of Reads in Peak	0.0973

ppr: Overlapping peaks comparing pooled pseudo replicates
rep1-pr: Overlapping peaks comparing pseudoreplicates from replicate 1
rep2-pr: Overlapping peaks comparing pseudoreplicates from replicate 2
repi-repj: Overlapping peaks comparing true replicates (rep i vs. rep j)

Other quality metrics

Fingerprint and Jensen-Shannon distance

	rep1
% genome enriched	0.3170
AUC	0.4962
CHANCE divergence	0.0956
Elbow Point	0.0000
JS Distance	0.5585
Synthetic AUC	0.5036
Synthetic Elbow Point	0.0941
Synthetic JS Distance	0.2258