ASTROSAT CZTI

Data Quality Report

Orbit 53769

Creation date: 2025-09-06T01:37:23.046576
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_022T04_9000006506_53769cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53769cztM0_level2_quad_clean.evt
Size (bytes)1,117,638,72090,527,040
Size1.0 GB 86.3 MB
Events in quadrant A20,796,52536,533
Events in quadrant B4,672,339813,090
Events in quadrant C7,993,651678,980
Events in quadrant D7,262,012631,474

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0675166
B0198561
C0296601
D0274921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8356803696.170416%
B83572272.716286%
C835792211.032667%
D835799411.894220%

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 8445 8355 7826 7826 92.67% 93.67%
B 8447 8357 168 168 1.99% 2.01%
C 8447 8358 843 843 9.98% 10.09%
D 8447 8358 938 938 11.10% 11.22%

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 63 17520513 320898.67 211 206 54.6
A 3 78 1591956 29154.2 211 206 54.6
A 15 174 438558 8028.77 211 206 54.6
B 5 185 371789 2019.04 854 825 183.7
B 6 255 184855 1001.62 854 825 183.7
B 4 81 147142 796.36 854 825 183.7
C 15 224 3290062 14508.51 815 805 226.7
C 15 158 460756 2028.79 815 805 226.7
C 1 241 328249 1444.32 815 805 226.7
D 1 241 2683365 11611.64 807 773 231.0
D 8 176 280053 1208.87 807 773 231.0
D 13 153 208461 898.98 807 773 231.0

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