ASTROSAT CZTI

Data Quality Report

Orbit 20663

Creation date: 2024-06-27T18:18:05.648617
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/AS1A05_229T02_9000003060_20663cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20663cztM0_level2_quad_clean.evt
Size (bytes)473,495,04078,773,760
Size451.6 MB 75.1 MB
Events in quadrant A3,226,273482,978
Events in quadrant B3,484,526483,876
Events in quadrant C3,265,175471,879
Events in quadrant D3,889,127459,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142492
B0148142
C0142032
D0163092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6987220.314870%
B6987610.873050%
C6987610.873050%
D69871912.733648%

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 7787 6988 0 0 0.00% 0.00%
B 7787 6988 19 19 0.24% 0.27%
C 7787 6988 2 2 0.03% 0.03%
D 7787 6988 145 145 1.86% 2.07%

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 5 16 50412 297.46 824 806 166.8
A 0 226 7185 38.25 824 806 166.8
A 3 137 6769 35.76 824 806 166.8
B 7 220 147063 930.4 826 806 157.2
B 3 64 42111 262.76 826 806 157.2
B 0 183 21878 134.05 826 806 157.2
C 14 238 124789 664.23 793 798 186.7
C 7 247 19804 101.82 793 798 186.7
C 9 54 13921 70.3 793 798 186.7
D 2 165 427554 2212.33 790 769 192.9
D 1 52 355984 1841.34 790 769 192.9
D 7 238 54212 277.03 790 769 192.9

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