Quiet bars Indicator: Formula, Settings and How to Read It
Quiet Bars marks volume dry-ups on the price chart. A bar is marked when its volume falls strictly below the mean minus k standard deviations of the preceding bars, drawn as a small dot at the bar's low.
Senzoukria · Indicators · Updated September 2026
Quiet bars ships with the Senzoukria desktop app, in the Tape & flow group of the indicator catalogue. It is drawn on the price chart.
What Quiet bars measures
The mean and standard deviation are computed on the N bars strictly before the bar being tested, so the bar never contributes to the baseline it is compared against. The standard deviation is the population form, divided by N. The comparison is a strict inequality: a bar sitting exactly on the threshold is not marked. Defaults are 20 bars and 1.5 standard deviations, deliberately more permissive than the two-sigma threshold used for climax detection, because a dry-up builds gradually rather than arriving as a single extreme. No marker is drawn during warm-up, when fewer than N previous bars are available.
The formula, as implemented
This is not a description of how the indicator is usually defined elsewhere — it is what the shipped code computes, documented next to the implementation:
Barres CALMES — assèchement du volume : vol[i] < μ_vol − k·σ_vol, μ/σ (population, ÷N) sur les N barres STRICTEMENT précédentes (convention de famille). Inégalité STRICTE. Défauts : N=20, k=1.5 (plus permissif que le climax : l'assèchement est graduel, pas un extrême à 2σ). Marqueur : dot discret au LOW de la barre (gris par défaut). Warm-up → aucun marqueur.
How to read it
- A marker says participation dropped relative to the recent baseline. It carries no direction and no side.
- Clusters of markers describe a stretch of thin trading, which is what the end of a session or a pause between scheduled events tends to look like.
- A marked bar at the edge of a range means price reached that area without much volume behind it, which is a different situation from reaching it on heavy trade.
- Watch what follows the cluster rather than the cluster itself: the marker describes a state, not a transition.
- Markers appearing while price continues to travel describe movement carried on little volume, which the Effort vs Result indicator quantifies on the same bars.
Parameters and defaults
Period defaults to 20 bars and the threshold to 1.5 standard deviations; the marker colour is configurable and defaults to grey. Raising the threshold makes markers rarer and restricts them to sharper dry-ups; lowering it marks a large proportion of ordinary bars. A shorter period makes the baseline adapt faster, so a quiet stretch soon becomes the new normal and stops being marked; a longer period holds the reference further back at the cost of a longer warm-up.
| Parameter | Type | Default | Range |
|---|---|---|---|
| Period | number | 20 | 2 – 500 |
| Threshold (σ) | number | 1.5 | 0.5 – 5 |
What it does not show
The baseline is a plain rolling window with no awareness of sessions, so a window that spans a close and reopen mixes an active period with an inactive one and can either suppress or manufacture markers around the boundary. Holidays, shortened sessions and contract rolls distort it the same way. The marker is not directional and gives no indication of what follows. On thinly traded instruments and timeframes where most bars carry little volume, the distribution is skewed and markers lose their meaning.
Using it in Senzoukria
Add it from the Indicators panel of any footprint chart or candle chart. It runs on futures data from Rithmic or Databento and on crypto pairs from Binance and Bybit, on the same engine — the calculation does not change with the venue, only the data feeding it does. Market data subscriptions are billed by the provider, separately from the app.
Related indicators
- Tape Speed — Tape & flow
- Diagonal Imbalances — Tape & flow
- Stacked Imbalances — Tape & flow
- Absorption Score — Tape & flow
- Unfinished Auctions — Tape & flow
- Effort vs Result — Tape & flow
See the full indicator library, or start with the order flow guide if you are new to reading aggression, delta and absorption.
Frequently asked questions
- What is a quiet bar in order flow?
- A quiet bar is one whose volume is unusually low relative to the recent bars around it. Here the comparison is statistical: the bar is marked when its volume falls strictly below the mean of the previous bars minus a chosen number of standard deviations. It describes a drop in participation, not a direction.
- Why does the baseline exclude the bar being tested?
- Because including it would pull the mean towards the value being judged, which makes an extreme bar look less extreme than it is. Using only the strictly preceding bars keeps the reference independent of the bar under test, and it is the same convention used by the other statistical markers in the application.
- Can quiet bars be used to time entries?
- They are not designed for that. The marker states that volume dried up relative to a rolling baseline, which is a description of conditions and not a forecast. Quiet periods can precede a move, continue for a long time, or simply reflect a session winding down, and the indicator cannot distinguish between those cases.