ASTROSAT CZTI

Data Quality Report

Orbit 56167

Creation date: 2026-02-14T11:40:17.233822
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_083T04_9000006550_56167cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56167cztM0_level2_quad_clean.evt
Size (bytes)1,304,046,720260,856,000
Size1.2 GB 248.8 MB
Events in quadrant A15,705,3991,594,770
Events in quadrant B10,605,4061,831,372
Events in quadrant C9,270,8131,642,838
Events in quadrant D11,222,8471,521,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0601904
B0448543
C0420473
D0470983

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1896117469.208375%
B189626003.164223%
C189622261.191857%
D189624322.278241%

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 20477 18963 1256 1256 6.13% 6.62%
B 20477 18963 200 200 0.98% 1.05%
C 20477 18963 85 85 0.42% 0.45%
D 20477 18963 318 318 1.55% 1.68%

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 15 32 2969649 6248.89 1928 1885 474.9
A 7 64 1251577 2631.34 1928 1885 474.9
A 0 250 1110951 2335.24 1928 1885 474.9
B 5 185 895158 2105.96 1990 1913 424.2
B 5 172 675221 1587.43 1990 1913 424.2
B 7 0 353047 827.85 1990 1913 424.2
C 12 252 1046521 1937.23 1970 1952 539.2
C 6 223 161105 295.16 1970 1952 539.2
C 8 7 138691 253.59 1970 1952 539.2
D 2 249 861565 1577.03 1938 1853 545.1
D 11 129 724490 1325.59 1938 1853 545.1
D 8 240 711599 1301.94 1938 1853 545.1

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