ASTROSAT CZTI

Data Quality Report

Orbit 21079

Creation date: 2024-06-27T18:23:14.463082
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/AS1A05_075T05_9000003116_21079cztM0_level2.evt modeM0/AS1A05_075T05_9000003116_21079cztM0_level2_quad_clean.evt
Size (bytes)574,320,96093,044,160
Size547.7 MB 88.7 MB
Events in quadrant A3,509,288588,715
Events in quadrant B3,933,124592,443
Events in quadrant C3,491,974569,756
Events in quadrant D5,950,191544,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154072
B0164462
C0153482
D0228942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74991181.573543%
B74991872.493666%
C74991181.573543%
D74994786.374183%

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 7820 7501 3 3 0.04% 0.04%
B 7820 7501 36 36 0.46% 0.48%
C 7820 7501 0 0 0.00% 0.00%
D 7820 7501 322 322 4.12% 4.29%

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 15 192 32689 174.82 899 879 182.0
A 13 254 11388 57.75 899 879 182.0
A 12 96 9197 45.71 899 879 182.0
B 0 219 120250 705.4 893 870 169.2
B 0 228 102434 600.13 893 870 169.2
B 0 230 71889 419.64 893 870 169.2
C 14 238 135509 664.29 861 865 202.7
C 13 61 5956 25.12 861 865 202.7
C 3 202 2058 5.89 861 865 202.7
D 1 239 1932127 9233.8 857 830 209.2
D 7 238 429741 2050.68 857 830 209.2
D 1 52 138015 655.9 857 830 209.2

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