ASTROSAT CZTI

Data Quality Report

Orbit 06720

Creation date: 2024-06-27T15:10:46.615499
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/AS1C02_003T01_9000000924_06720cztM0_level2.evt modeM0/AS1C02_003T01_9000000924_06720cztM0_level2_quad_clean.evt
Size (bytes)590,071,680106,453,440
Size562.7 MB 101.5 MB
Events in quadrant A4,266,744673,038
Events in quadrant B3,643,131698,174
Events in quadrant C3,791,899679,060
Events in quadrant D5,629,323620,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181704
B0164973
C0171123
D0221467

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79353083.881537%
B79351812.281033%
C79352342.948960%
D79345236.591883%

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 8542 7939 155 155 1.81% 1.95%
B 8542 7939 0 0 0.00% 0.00%
C 8542 7940 74 74 0.87% 0.93%
D 8541 7939 300 300 3.51% 3.78%

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 14 111 624014 3340.8 911 891 186.5
A 8 15 83953 445.33 911 891 186.5
A 15 234 48731 256.49 911 891 186.5
B 12 111 19040 101.0 933 906 179.5
B 11 111 14901 77.95 933 906 179.5
B 10 252 10839 55.32 933 906 179.5
C 12 4 242256 1135.45 905 908 212.6
C 9 247 10531 45.27 905 908 212.6
C 13 61 7149 29.36 905 908 212.6
D 8 195 1262569 5961.73 869 839 211.6
D 2 33 996294 4703.57 869 839 211.6
D 2 152 39405 182.23 869 839 211.6

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