ASTROSAT CZTI

Data Quality Report

Orbit 04796

Creation date: 2024-06-27T14:47:09.170551
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/AS1G05_156T09_9000000604_04796cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04796cztM0_level2_quad_clean.evt
Size (bytes)520,542,72068,270,400
Size496.4 MB 65.1 MB
Events in quadrant A3,991,308394,241
Events in quadrant B3,621,573390,242
Events in quadrant C3,239,649390,934
Events in quadrant D4,408,712375,520

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171012
B0157361
C0151101
D0184951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74132853.844597%
B74131291.740186%
C7413610.822879%
D74132743.696209%

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 7663 7414 129 129 1.68% 1.74%
B 7663 7414 0 0 0.00% 0.00%
C 7663 7414 0 0 0.00% 0.00%
D 7663 7414 177 177 2.31% 2.39%

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 14 238 434895 2535.84 830 810 171.2
A 0 50 228187 1328.29 830 810 171.2
A 8 15 70547 407.39 830 810 171.2
B 8 3 181839 1101.78 849 829 164.3
B 15 204 64639 388.4 849 829 164.3
B 14 167 29500 174.52 849 829 164.3
C 1 16 20544 102.62 821 825 192.2
C 13 61 6923 31.73 821 825 192.2
C 8 128 5911 26.47 821 825 192.2
D 13 235 472984 2406.41 806 781 196.2
D 5 239 246271 1251.05 806 781 196.2
D 2 136 218974 1111.94 806 781 196.2

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