ASTROSAT CZTI

Data Quality Report

Orbit 12274

Creation date: 2024-06-27T16:24:49.216326
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/AS1G08_064T01_9000001814_12274cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12274cztM0_level2_quad_clean.evt
Size (bytes)533,419,20082,722,240
Size508.7 MB 78.9 MB
Events in quadrant A3,732,599534,914
Events in quadrant B4,892,966524,848
Events in quadrant C2,816,802534,182
Events in quadrant D4,320,430507,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150242
B0181041
C0119231
D0163581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57751182.043290%
B577598717.090909%
C5775460.796537%
D57755198.987013%

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 7076 5777 18 18 0.25% 0.31%
B 7076 5777 531 531 7.50% 9.19%
C 7076 5777 4 4 0.06% 0.07%
D 7076 5777 365 365 5.16% 6.32%

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 13 251 414484 2792.6 736 722 148.2
A 1 162 119737 803.27 736 722 148.2
A 15 174 70352 469.95 736 722 148.2
B 4 239 2086752 17054.75 649 635 122.3
B 11 51 60657 490.7 649 635 122.3
B 0 85 40238 323.77 649 635 122.3
C 14 234 49111 300.0 707 711 161.3
C 4 175 7561 42.46 707 711 161.3
C 13 61 5084 27.11 707 711 161.3
D 1 52 1366782 8223.24 692 673 166.1
D 5 222 95924 573.36 692 673 166.1
D 9 85 49730 295.3 692 673 166.1

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