ASTROSAT CZTI

Data Quality Report

Orbit 55552

Creation date: 2026-01-04T03:20:04.140967
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_55552cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55552cztM0_level2_quad_clean.evt
Size (bytes)621,060,48096,321,600
Size592.3 MB 91.9 MB
Events in quadrant A3,282,607687,541
Events in quadrant B3,247,996733,126
Events in quadrant C11,418,854382,643
Events in quadrant D4,468,242600,643

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153410
B0153270
C0389420
D0185780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7357230.312627%
B7358190.258222%
C7357327444.501835%
D73572152.922387%

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 7357 7357 20 20 0.27% 0.27%
B 7358 7358 10 10 0.14% 0.14%
C 7357 7357 3208 3208 43.60% 43.60%
D 7357 7357 195 195 2.65% 2.65%

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 8 157164 825.55 762 742 189.5
A 3 14 44636 231.66 762 742 189.5
A 4 159 41446 214.82 762 742 189.5
B 10 247 94208 582.78 751 726 160.4
B 4 169 63230 389.66 751 726 160.4
B 7 0 42862 262.68 751 726 160.4
C 9 38 8372292 56290.45 535 529 148.7
C 13 3 375137 2518.81 535 529 148.7
C 12 2 300591 2017.57 535 529 148.7
D 11 129 916694 4385.05 735 700 208.9
D 10 102 205083 978.42 735 700 208.9
D 2 31 81560 387.09 735 700 208.9

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