ASTROSAT CZTI

Data Quality Report

Orbit 11979

Creation date: 2024-06-27T16:20:50.678470
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/AS1A04_082T01_9000001772_11979cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11979cztM0_level2_quad_clean.evt
Size (bytes)1,425,355,200208,575,360
Size1.3 GB 198.9 MB
Events in quadrant A8,171,7251,331,074
Events in quadrant B11,704,5341,287,973
Events in quadrant C7,497,0691,327,214
Events in quadrant D14,652,8261,204,592

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359016
B0459355
C0348185
D0547255

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168864232.505034%
B1688614618.652138%
C168863161.871373%
D16886228513.531920%

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 18052 16887 10 10 0.06% 0.06%
B 18052 16887 780 780 4.32% 4.62%
C 18052 16888 3 3 0.02% 0.02%
D 18051 16886 1892 1892 10.48% 11.20%

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 1 162 218144 542.47 1961 1912 398.6
A 1 178 108183 266.61 1961 1912 398.6
A 1 161 95690 235.26 1961 1912 398.6
B 4 239 2345866 6336.79 1919 1866 369.9
B 0 85 1229145 3317.84 1919 1866 369.9
B 15 204 202477 542.33 1919 1866 369.9
C 14 234 15878 31.31 1918 1923 445.8
C 13 61 14044 27.19 1918 1923 445.8
C 5 96 6211 9.62 1918 1923 445.8
D 1 52 6261017 14441.44 1806 1757 433.4
D 8 195 536935 1234.77 1806 1757 433.4
D 10 199 180302 411.94 1806 1757 433.4

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