ASTROSAT CZTI

Data Quality Report

Orbit 59040

Creation date: 2026-08-28T00:48:58.783340
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_004T02_9000006600_59040cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59040cztM0_level2_quad_clean.evt
Size (bytes)925,364,16096,281,280
Size882.5 MB 91.8 MB
Events in quadrant A4,290,907748,686
Events in quadrant B5,332,517763,534
Events in quadrant C7,581,832682,367
Events in quadrant D16,443,352177,275

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178661
B0212530
C0279350
D0541210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78111311.677122%
B78125927.578085%
C78127069.037378%
D7812583374.667179%

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 7811 7811 87 87 1.11% 1.11%
B 7812 7812 362 362 4.63% 4.63%
C 7812 7812 568 568 7.27% 7.27%
D 7811 7811 5181 5181 66.33% 66.33%

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 0 24 278224 1302.45 870 847 213.0
A 15 233 264615 1238.55 870 847 213.0
A 10 251 171429 800.98 870 847 213.0
B 4 236 766127 4282.69 840 808 178.7
B 2 249 691863 3867.11 840 808 178.7
B 4 171 185931 1035.94 840 808 178.7
C 15 219 3943933 17410.76 826 817 226.5
C 12 252 235905 1038.03 826 817 226.5
C 4 5 97568 427.2 826 817 226.5
D 12 1 14826012 150773.57 344 328 98.3
D 2 120 58929 595.96 344 328 98.3
D 2 31 53338 539.1 344 328 98.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct