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Report generated at 2021-02-05 14:23:23

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	53923168	98018842
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	53476509	96270768
Mapped(QC-failed)	0	0
% Mapped	99.1700	98.2200
Paired	53923168	98018842
Paired(QC-failed)	0	0
Read1	26961584	49009421
Read1(QC-failed)	0	0
Read2	26961584	49009421
Read2(QC-failed)	0	0
Properly Paired	52778836	94403324
Properly Paired(QC-failed)	0	0
% Properly Paired	97.8800	96.3100
With itself	53217735	95481141
With itself(QC-failed)	0	0
Singletons	258774	789627
Singletons(QC-failed)	0	0
% Singleton	0.4800	0.8100
Diff. Chroms	38031	119737
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	24186530	40573634
Unmapped Reads	0	0
Unpaired Dupes	0	0
Paired Dupes	374186	190324
Paired Opt. Dupes	778	892
% Dupes/100	0.0155	0.0047

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Read Pairs	24148366	40559437
Distinct Read Pairs	23776523	40369743
One Read Pair	23427121	40192163
Two Read Pairs	331046	172878
NRF = Distinct/Total	0.9846	0.9953
PBC1 = OnePair/Distinct	0.9853	0.9956
PBC2 = OnePair/TwoPair	70.7670	232.4886

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	47624688	80766620
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	47624688	80766620
Mapped(QC-failed)	0	0
% Mapped	100.0000	100.0000
Paired	47624688	80766620
Paired(QC-failed)	0	0
Read1	23812344	40383310
Read1(QC-failed)	0	0
Read2	23812344	40383310
Read2(QC-failed)	0	0
Properly Paired	47624688	80766620
Properly Paired(QC-failed)	0	0
% Properly Paired	100.0000	100.0000
With itself	47624688	80766620
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	94483
Np	0
N optimal	94483
N conservative	94483
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.	145
Corr. Est. Fragment Len.	0.2317
Phantom Peak	55
Corr. Phantom Peak	0.1901
Argmin. Corr.	1500
Min. Corr.	0.1651
NSC	1.4032
RSC	2.6701

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	0.4012

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	0.1722
AUC	0.4939
CHANCE divergence	0.1590
Elbow Point	0.0000
JS Distance	0.7855
Synthetic AUC	0.4942
Synthetic Elbow Point	0.3370
Synthetic JS Distance	0.4671