ASTROSAT CZTI

Data Quality Report

Orbit 16228

Creation date: 2024-06-27T17:19:39.347877
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T02_112T01_9000002390_16228cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16228cztM0_level2_quad_clean.evt
Size (bytes)506,206,080109,402,560
Size482.8 MB 104.3 MB
Events in quadrant A3,485,209718,587
Events in quadrant B4,319,730711,791
Events in quadrant C3,684,930704,759
Events in quadrant D3,372,265697,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147122
B0173001
C0155001
D0145831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69051161.679942%
B69052123.070239%
C69051351.955105%
D6905680.984794%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7772 6908 20 20 0.26% 0.29%
B 7772 6908 80 80 1.03% 1.16%
C 7772 6908 10 10 0.13% 0.14%
D 7772 6908 16 16 0.21% 0.23%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 103416 582.79 872 857 176.0
A 13 248 16489 88.83 872 857 176.0
A 0 226 7768 39.27 872 857 176.0
B 7 220 377407 2290.95 861 839 164.4
B 4 173 171404 1037.68 861 839 164.4
B 0 219 113246 683.86 861 839 164.4
C 3 233 193063 1003.83 825 832 191.5
C 0 207 134904 700.12 825 832 191.5
C 14 238 125841 652.79 825 832 191.5
D 15 0 75378 356.22 851 828 209.3
D 1 52 36249 169.25 851 828 209.3
D 2 234 27476 127.33 851 828 209.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter