ASTROSAT CZTI

Data Quality Report

Orbit 03077

Creation date: 2024-06-27T14:24:20.844602
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_237T03_9000000426_03077cztM0_level2.evt modeM0/AS1G05_237T03_9000000426_03077cztM0_level2_quad_clean.evt
Size (bytes)575,363,520137,243,520
Size548.7 MB 130.9 MB
Events in quadrant A4,468,930891,202
Events in quadrant B4,348,687909,317
Events in quadrant C3,925,292907,982
Events in quadrant D4,118,964872,003

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193863
B0184492
C0180102
D0186712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82942923.520617%
B8294250.301423%
C82941251.507114%
D82941011.217748%

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 12603 8296 262 262 2.08% 3.16%
B 12603 8296 13 13 0.10% 0.16%
C 12603 8296 114 114 0.90% 1.37%
D 12603 8296 107 107 0.85% 1.29%

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 12 113 974830 5461.2 869 852 178.3
A 8 15 43448 238.84 869 852 178.3
A 12 194 32713 178.65 869 852 178.3
B 15 204 372253 2124.33 898 877 174.8
B 4 81 239788 1366.61 898 877 174.8
B 0 219 84172 476.46 898 877 174.8
C 4 248 298882 1486.57 855 865 200.5
C 14 223 78321 386.37 855 865 200.5
C 6 80 76580 377.68 855 865 200.5
D 2 152 334838 1640.65 845 824 203.6
D 7 6 179179 876.07 845 824 203.6
D 10 85 90541 440.68 845 824 203.6

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