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Report generated at 2021-01-20 08:36:53

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	106544834	193594802
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	104745511	187969057
Mapped(QC-failed)	0	0
% Mapped	98.3100	97.0900
Paired	106544834	193594802
Paired(QC-failed)	0	0
Read1	53272417	96797401
Read1(QC-failed)	0	0
Read2	53272417	96797401
Read2(QC-failed)	0	0
Properly Paired	104037859	184287983
Properly Paired(QC-failed)	0	0
% Properly Paired	97.6500	95.1900
With itself	104414286	185784698
With itself(QC-failed)	0	0
Singletons	331225	2184359
Singletons(QC-failed)	0	0
% Singleton	0.3100	1.1300
Diff. Chroms	168963	610670
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	47646019	78211821
Unmapped Reads	0	0
Unpaired Dupes	0	0
Paired Dupes	3053913	539110
Paired Opt. Dupes	4579	19807
% Dupes/100	0.0641	0.0069

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Read Pairs	47620951	77646644
Distinct Read Pairs	44568740	77172156
One Read Pair	41683528	76701136
Two Read Pairs	2726536	467668
NRF = Distinct/Total	0.9359	0.9939
PBC1 = OnePair/Distinct	0.9353	0.9939
PBC2 = OnePair/TwoPair	15.2881	164.0077

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	89184212	155345422
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	89184212	155345422
Mapped(QC-failed)	0	0
% Mapped	100.0000	100.0000
Paired	89184212	155345422
Paired(QC-failed)	0	0
Read1	44592106	77672711
Read1(QC-failed)	0	0
Read2	44592106	77672711
Read2(QC-failed)	0	0
Properly Paired	89184212	155345422
Properly Paired(QC-failed)	0	0
% Properly Paired	100.0000	100.0000
With itself	89184212	155345422
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	132482
Np	0
N optimal	132482
N conservative	132482
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.	210
Corr. Est. Fragment Len.	0.2132
Phantom Peak	50
Corr. Phantom Peak	0.2056
Argmin. Corr.	1500
Min. Corr.	0.1864
NSC	1.1434
RSC	1.3944

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	0.4108

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	0.1846
AUC	0.4957
CHANCE divergence	0.1324
Elbow Point	0.0000
JS Distance	0.7566
Synthetic AUC	0.5054
Synthetic Elbow Point	0.3495
Synthetic JS Distance	0.4467