ASTROSAT CZTI

Data Quality Report

Orbit 56722

Creation date: 2026-03-23T18:33:00.523977
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/AS1A14_083T05_9000006560_56722cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56722cztM0_level2_quad_clean.evt
Size (bytes)412,545,60097,182,720
Size393.4 MB 92.7 MB
Events in quadrant A4,016,796625,732
Events in quadrant B3,155,889685,156
Events in quadrant C4,410,231593,144
Events in quadrant D3,176,383579,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163701
B0140461
C0178351
D0140601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65782543.861356%
B6578921.398601%
C65793064.651163%
D6579661.003192%

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 7518 6578 175 175 2.33% 2.66%
B 7518 6578 25 25 0.33% 0.38%
C 7519 6579 281 281 3.74% 4.27%
D 7519 6579 15 15 0.20% 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 10 251 764417 4315.12 714 696 177.0
A 3 62 280564 1581.29 714 696 177.0
A 3 14 156519 880.42 714 696 177.0
B 2 249 97807 640.25 706 682 151.7
B 10 247 50698 329.71 706 682 151.7
B 0 245 44367 287.97 706 682 151.7
C 15 230 1208665 6359.9 686 680 189.9
C 13 3 290868 1527.81 686 680 189.9
C 12 252 55639 289.35 686 680 189.9
D 2 249 116236 581.46 701 670 198.8
D 2 252 91989 459.46 701 670 198.8
D 2 207 59752 297.26 701 670 198.8

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