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Report generated at 2020-05-13 06:34:54

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	51356028	55554290
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	48594452	53234328
Mapped(QC-failed)	0	0
% Mapped	94.6200	95.8200
Paired	51356028	55554290
Paired(QC-failed)	0	0
Read1	25678014	27777145
Read1(QC-failed)	0	0
Read2	25678014	27777145
Read2(QC-failed)	0	0
Properly Paired	46012878	46813080
Properly Paired(QC-failed)	0	0
% Properly Paired	89.6000	84.2700
With itself	47635668	52018273
With itself(QC-failed)	0	0
Singletons	958784	1216055
Singletons(QC-failed)	0	0
% Singleton	1.8700	2.1900
Diff. Chroms	1038583	3541644
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	19846732	19892586
Unmapped Reads	0	0
Unpaired Dupes	0	0
Paired Dupes	182285	222592
Paired Opt. Dupes	2443	2281
% Dupes/100	0.0092	0.0112

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Read Pairs	19846590	19890387
Distinct Read Pairs	19664307	19667823
One Read Pair	19483445	19447434
Two Read Pairs	179450	218233
NRF = Distinct/Total	0.9908	0.9888
PBC1 = OnePair/Distinct	0.9908	0.9888
PBC2 = OnePair/TwoPair	108.5731	89.1132

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	39328894	39339988
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	39328894	39339988
Mapped(QC-failed)	0	0
% Mapped	100.0000	100.0000
Paired	39328894	39339988
Paired(QC-failed)	0	0
Read1	19664447	19669994
Read1(QC-failed)	0	0
Read2	19664447	19669994
Read2(QC-failed)	0	0
Properly Paired	39328894	39339988
Properly Paired(QC-failed)	0	0
% Properly Paired	100.0000	100.0000
With itself	39328894	39339988
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	122517
Np	0
N optimal	122517
N conservative	122517
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.	270
Corr. Est. Fragment Len.	0.2035
Phantom Peak	50
Corr. Phantom Peak	0.1984
Argmin. Corr.	1500
Min. Corr.	0.1829
NSC	1.1128
RSC	1.3332

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	0.2515

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	0.1318
AUC	0.4935
CHANCE divergence	0.4124
Elbow Point	0.0000
JS Distance	0.7082
Synthetic AUC	0.5103
Synthetic Elbow Point	0.1242
Synthetic JS Distance	0.4116