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Report generated at 2022-01-24 17:28:37

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	44204310	40943326
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	43626307	40346936
Mapped(QC-failed)	0	0
% Mapped	98.6900	98.5400
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	34681932	31886589
Paired Reads	0	0
Unmapped Reads	0	0
Unpaired Dupes	8410175	12411493
Paired Dupes	0	0
Paired Opt. Dupes	0	0
% Dupes/100	0.2425	0.3892

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Reads	34681407	31876292
Distinct Reads	26537032	19738845
One Read	20174902	11971412
Two Reads	4969108	4930683
NRF = Distinct/Total	0.7652	0.6192
PBC1 = OneRead/Distinct	0.7603	0.6065
PBC2 = OneRead/TwoReads	4.0601	2.4279

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	26271757	19475096
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	26271757	19475096
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	18284
Np	0
N optimal	18284
N conservative	18284
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.	185
Corr. Est. Fragment Len.	0.1722
Phantom Peak	40
Corr. Phantom Peak	0.1709
Argmin. Corr.	1500
Min. Corr.	0.1522
NSC	1.1312
RSC	1.0648

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	0.0674

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	0.2800
AUC	0.4894
CHANCE divergence	0.1417
Elbow Point	0.0000
JS Distance	0.5751
Synthetic AUC	0.5097
Synthetic Elbow Point	0.1052
Synthetic JS Distance	0.2507