ASTROSAT CZTI

Data Quality Report

Orbit 12677

Creation date: 2024-06-27T16:30:54.761767
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/AS1A04_174T01_9000001876_12677cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12677cztM0_level2_quad_clean.evt
Size (bytes)521,144,640102,551,040
Size497.0 MB 97.8 MB
Events in quadrant A2,921,156713,707
Events in quadrant B5,481,759627,637
Events in quadrant C2,785,663699,352
Events in quadrant D4,201,569660,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123322
B0201931
C0120221
D0163281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5795721.242450%
B5795101917.584124%
C5795470.811044%
D57953255.608283%

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 6950 5795 0 0 0.00% 0.00%
B 6950 5795 796 796 11.45% 13.74%
C 6950 5795 0 0 0.00% 0.00%
D 6951 5796 335 335 4.82% 5.78%

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 12 189 34497 220.73 747 734 153.0
A 8 15 9108 54.75 747 734 153.0
A 0 226 6866 40.09 747 734 153.0
B 4 239 2384624 18589.05 674 659 128.2
B 3 209 212779 1654.01 674 659 128.2
B 3 64 100695 780.03 674 659 128.2
C 13 61 5163 26.92 714 721 165.0
C 14 234 2729 12.17 714 721 165.0
C 3 202 1822 6.67 714 721 165.0
D 1 52 1263687 7486.54 708 692 168.7
D 10 199 198576 1172.98 708 692 168.7
D 2 234 21498 123.33 708 692 168.7

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