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Report generated at 2022-06-13 23:33:09

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	37366484	64190449
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	36094670	62768852
Mapped(QC-failed)	0	0
% Mapped	96.6000	97.7900
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	30232497	50735160
Paired Reads	0	0
Unmapped Reads	0	0
Unpaired Dupes	4231679	1848677
Paired Dupes	0	0
Paired Opt. Dupes	0	0
% Dupes/100	0.1400	0.0364

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Reads	30228536	50250873
Distinct Reads	26153300	48904513
One Read	22586234	47627372
Two Reads	3131426	1243595
NRF = Distinct/Total	0.8652	0.9732
PBC1 = OneRead/Distinct	0.8636	0.9739
PBC2 = OneRead/TwoReads	7.2128	38.2981

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	26000818	48886483
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	26000818	48886483
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	73044
Np	0
N optimal	73044
N conservative	73044
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.	165
Corr. Est. Fragment Len.	0.2001
Phantom Peak	45
Corr. Phantom Peak	0.1909
Argmin. Corr.	1500
Min. Corr.	0.1670
NSC	1.1982
RSC	1.3851

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	0.2225

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	0.1886
AUC	0.4894
CHANCE divergence	0.1965
Elbow Point	0.0000
JS Distance	0.7305
Synthetic AUC	0.4979
Synthetic Elbow Point	0.2527
Synthetic JS Distance	0.3925