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Report generated at 2019-10-21 19:18:06

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	42763028	37971622
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	41733985	37468517
Mapped(QC-failed)	0	0
% Mapped	97.5900	98.6800
Paired	0	0
Paired(QC-failed)	0	0
Read1	0	0
Read1(QC-failed)	0	0
Read2	0	0
Read2(QC-failed)	0	0
Properly Paired	0	0
Properly Paired(QC-failed)	0	0
% Properly Paired	0.0000	0.0000
With itself	0	0
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

Marking duplicates (filtered BAM)

Filtered out (samtools view -F 1804):

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

	rep1	ctl1
Unpaired Reads	28544294	30385097
Paired Reads	0	0
Unmapped Reads	0	0
Unpaired Dupes	555782	3634852
Paired Dupes	0	0
Paired Opt. Dupes	0	0
% Dupes/100	0.0195	0.1196

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Reads	28543875	30350693
Distinct Reads	28000643	26807348
One Read	27522635	23660695
Two Reads	465298	2819237
NRF = Distinct/Total	0.9810	0.8833
PBC1 = OneRead/Distinct	0.9829	0.8826
PBC2 = OneRead/TwoReads	59.1506	8.3926

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	27988512	26750245
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	27988512	26750245
Mapped(QC-failed)	0	0
% Mapped	100.0000	100.0000
Paired	0	0
Paired(QC-failed)	0	0
Read1	0	0
Read1(QC-failed)	0	0
Read2	0	0
Read2(QC-failed)	0	0
Properly Paired	0	0
Properly Paired(QC-failed)	0	0
% Properly Paired	0.0000	0.0000
With itself	0	0
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	68906
Np	0
N optimal	68906
N conservative	68906
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.	120
Corr. Est. Fragment Len.	0.1921
Phantom Peak	40
Corr. Phantom Peak	0.2190
Argmin. Corr.	1500
Min. Corr.	0.1854
NSC	1.0363
RSC	0.2000

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	0.0536

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	0.2372
AUC	0.4897
CHANCE divergence	0.1803
Elbow Point	0.0000
JS Distance	0.6059
Synthetic AUC	0.5118
Synthetic Elbow Point	0.1208
Synthetic JS Distance	0.2963