ASTROSAT CZTI

Data Quality Report

Orbit 55164

Creation date: 2025-12-17T15:02:52.693281
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_022T16_9000006532_55164cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55164cztM0_level2_quad_clean.evt
Size (bytes)1,253,998,080237,340,800
Size1.2 GB 226.3 MB
Events in quadrant A16,235,9181,417,543
Events in quadrant B9,571,7531,651,079
Events in quadrant C9,355,0501,466,129
Events in quadrant D9,875,4181,421,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038214
B038218
C038228
D038222

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0642033848
B0440591909
C0432982254
D0444832250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17655206411.690739%
B178968034.487036%
C178624312.412944%
D178544192.346813%

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 19833 18264 1779 1779 8.97% 9.74%
B 19847 18459 321 321 1.62% 1.74%
C 19843 18420 186 186 0.94% 1.01%
D 19843 18380 197 197 0.99% 1.07%

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 3 78 7920894 17597.01 1820 1774 450.0
A 0 8 521180 1154.17 1820 1774 450.0
A 4 78 262082 578.43 1820 1774 450.0
B 2 249 1497844 3741.31 1868 1801 399.9
B 5 185 400443 996.93 1868 1801 399.9
B 0 182 223054 553.31 1868 1801 399.9
C 13 3 586811 1161.24 1855 1842 503.7
C 10 22 340666 672.61 1855 1842 503.7
C 6 223 299833 591.55 1855 1842 503.7
D 11 129 1312479 2523.2 1853 1776 519.5
D 5 173 173486 330.55 1853 1776 519.5
D 11 176 157586 299.95 1853 1776 519.5

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