ASTROSAT CZTI

Data Quality Report

Orbit 24569

Creation date: 2024-06-27T19:07:23.709774
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/AS1T03_183T01_9000003610_24569cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24569cztM0_level2_quad_clean.evt
Size (bytes)585,406,080130,242,240
Size558.3 MB 124.2 MB
Events in quadrant A4,672,982865,473
Events in quadrant B3,592,940895,101
Events in quadrant C3,951,394835,035
Events in quadrant D4,995,849819,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190803
B0156962
C0166642
D0200752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76084455.849106%
B76081141.498423%
C76082733.588328%
D7608911.196109%

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 7868 7609 230 230 2.92% 3.02%
B 7868 7609 2 2 0.03% 0.03%
C 7868 7609 74 74 0.94% 0.97%
D 7868 7609 30 30 0.38% 0.39%

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 6 16 1255766 7041.34 886 866 178.2
A 13 254 10923 56.43 886 866 178.2
A 3 137 8165 40.96 886 866 178.2
B 3 64 40876 233.79 899 875 171.1
B 12 111 21014 117.71 899 875 171.1
B 11 111 18635 103.8 899 875 171.1
C 7 247 423352 2125.29 855 859 198.8
C 14 238 135065 675.1 855 859 198.8
C 2 16 29043 141.78 855 859 198.8
D 8 195 1278700 6122.38 863 837 208.7
D 12 218 219590 1048.07 863 837 208.7
D 7 238 154116 734.38 863 837 208.7

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