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Report generated at 2020-07-10 04:06:08

Pipeline type: Histone ChIP-Seq

Peak caller: MACS2

Alignment

Flagstat (raw BAM)

	rep1	ctl1
Total	152064246	109897006
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	145735531	108231726
Mapped(QC-failed)	0	0
% Mapped	95.8400	98.4800
Paired	152064246	109897006
Paired(QC-failed)	0	0
Read1	76032123	54948503
Read1(QC-failed)	0	0
Read2	76032123	54948503
Read2(QC-failed)	0	0
Properly Paired	142791456	105268015
Properly Paired(QC-failed)	0	0
% Properly Paired	93.9000	95.7900
With itself	144344901	107714777
With itself(QC-failed)	0	0
Singletons	1390630	516949
Singletons(QC-failed)	0	0
% Singleton	0.9100	0.4700
Diff. Chroms	152182	292990
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	56142254	46292526
Unmapped Reads	0	0
Unpaired Dupes	0	0
Paired Dupes	2566459	315764
Paired Opt. Dupes	3298	2945
% Dupes/100	0.0457	0.0068

Library complexity (filtered non-mito BAM)

	rep1	ctl1
Total Read Pairs	55994251	46198469
Distinct Read Pairs	53470659	45905006
One Read Pair	51122023	45622153
Two Read Pairs	2245420	278233
NRF = Distinct/Total	0.9549	0.9936
PBC1 = OnePair/Distinct	0.9561	0.9938
PBC2 = OnePair/TwoPair	22.7672	163.9710

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	107151590	91953524
Total(QC-failed)	0	0
Dupes	0	0
Dupes(QC-failed)	0	0
Mapped	107151590	91953524
Mapped(QC-failed)	0	0
% Mapped	100.0000	100.0000
Paired	107151590	91953524
Paired(QC-failed)	0	0
Read1	53575795	45976762
Read1(QC-failed)	0	0
Read2	53575795	45976762
Read2(QC-failed)	0	0
Properly Paired	107151590	91953524
Properly Paired(QC-failed)	0	0
% Properly Paired	100.0000	100.0000
With itself	107151590	91953524
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	175135
Np	0
N optimal	175135
N conservative	175135
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.	95
Corr. Est. Fragment Len.	0.1837
Phantom Peak	50
Corr. Phantom Peak	0.2049
Argmin. Corr.	1500
Min. Corr.	0.1768
NSC	1.0391
RSC	0.2457

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	0.1032

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	0.2816
AUC	0.4961
CHANCE divergence	0.0975
Elbow Point	0.0000
JS Distance	0.6179
Synthetic AUC	0.4972
Synthetic Elbow Point	0.1231
Synthetic JS Distance	0.2779