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Report generated at 2021-02-06 06:47:32

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	119288782	110664060
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	114638326	108798311
Mapped(QC-failed)	0	0
% Mapped	96.1000	98.3100
Paired	119288782	110664060
Paired(QC-failed)	0	0
Read1	59644391	55332030
Read1(QC-failed)	0	0
Read2	59644391	55332030
Read2(QC-failed)	0	0
Properly Paired	111605968	106498695
Properly Paired(QC-failed)	0	0
% Properly Paired	93.5600	96.2400
With itself	113276806	108092733
With itself(QC-failed)	0	0
Singletons	1361520	705578
Singletons(QC-failed)	0	0
% Singleton	1.1400	0.6400
Diff. Chroms	174578	137878
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	41495412	46232784
Unmapped Reads	0	0
Unpaired Dupes	0	0
Paired Dupes	497972	376972
Paired Opt. Dupes	82540	91434
% Dupes/100	0.0120	0.0082

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Read Pairs	41431379	46175998
Distinct Read Pairs	40941177	45807818
One Read Pair	40530153	45456138
Two Read Pairs	389114	344865
NRF = Distinct/Total	0.9882	0.9920
PBC1 = OnePair/Distinct	0.9900	0.9923
PBC2 = OnePair/TwoPair	104.1601	131.8085

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	81994880	91711624
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	81994880	91711624
Mapped(QC-failed)	0	0
% Mapped	100.0000	100.0000
Paired	81994880	91711624
Paired(QC-failed)	0	0
Read1	40997440	45855812
Read1(QC-failed)	0	0
Read2	40997440	45855812
Read2(QC-failed)	0	0
Properly Paired	81994880	91711624
Properly Paired(QC-failed)	0	0
% Properly Paired	100.0000	100.0000
With itself	81994880	91711624
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	177546
Np	0
N optimal	177546
N conservative	177546
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.	5
Corr. Est. Fragment Len.	0.1936
Phantom Peak	50
Corr. Phantom Peak	0.2193
Argmin. Corr.	1500
Min. Corr.	0.1821
NSC	1.0636
RSC	0.3112

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	0.0857

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	0.2343
AUC	0.4954
CHANCE divergence	0.1131
Elbow Point	0.0000
JS Distance	0.6617
Synthetic AUC	0.4980
Synthetic Elbow Point	0.1656
Synthetic JS Distance	0.3502