ASTROSAT CZTI

Data Quality Report

Orbit 55565

Creation date: 2026-01-04T22:14:29.394885
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_021T06_9000006538_55565cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55565cztM0_level2_quad_clean.evt
Size (bytes)572,912,64097,758,720
Size546.4 MB 93.2 MB
Events in quadrant A3,380,764655,374
Events in quadrant B3,228,255700,188
Events in quadrant C9,057,783544,287
Events in quadrant D4,995,779570,380

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152211
B0149561
C0318931
D0198031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70331031.464524%
B7033921.308119%
C703396313.692592%
D70342673.795849%

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 7687 7032 15 15 0.20% 0.21%
B 7687 7032 16 16 0.21% 0.23%
C 7687 7032 836 836 10.88% 11.89%
D 7688 7033 159 159 2.07% 2.26%

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 4 159 301109 1676.42 727 708 179.2
A 0 8 108401 600.99 727 708 179.2
A 4 3 56510 311.41 727 708 179.2
B 5 172 198785 1294.03 712 684 153.1
B 10 247 87617 567.86 712 684 153.1
B 4 169 47108 303.25 712 684 153.1
C 9 38 6255188 33858.04 672 665 184.7
C 6 223 53345 285.18 672 665 184.7
C 12 2 43205 230.28 672 665 184.7
D 11 129 1190857 6004.34 701 670 198.2
D 8 128 515418 2596.84 701 670 198.2
D 8 245 136176 683.61 701 670 198.2

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