ASTROSAT CZTI

Data Quality Report

Orbit 13344

Creation date: 2024-06-27T16:39:27.139917
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_082T01_9000001986_13344cztM0_level2.evt modeM0/AS1G08_082T01_9000001986_13344cztM0_level2_quad_clean.evt
Size (bytes)444,444,48094,176,000
Size423.9 MB 89.8 MB
Events in quadrant A3,266,691612,805
Events in quadrant B3,542,297629,980
Events in quadrant C3,163,005601,662
Events in quadrant D3,065,637573,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137913
B0146622
C0133612
D0133272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6218510.820199%
B62181472.364104%
C6218290.466388%
D6218350.562882%

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 7569 6220 1 1 0.01% 0.02%
B 7569 6220 63 63 0.83% 1.01%
C 7569 6220 1 1 0.01% 0.02%
D 7569 6220 2 2 0.03% 0.03%

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 9 143 80952 486.71 822 807 164.7
A 15 69 15716 90.54 822 807 164.7
A 1 162 8474 46.56 822 807 164.7
B 3 64 217454 1420.21 823 806 152.5
B 10 245 45108 290.42 823 806 152.5
B 4 173 19938 125.42 823 806 152.5
C 3 233 86724 479.28 787 794 179.3
C 14 234 7244 35.98 787 794 179.3
C 13 61 5718 27.46 787 794 179.3
D 2 136 38882 209.2 778 760 182.2
D 8 195 28350 151.41 778 760 182.2
D 2 234 21928 116.16 778 760 182.2

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