ASTROSAT CZTI

Data Quality Report

Orbit 04085

Creation date: 2024-06-27T14:37:10.940726
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_222T01_9000000520_04085cztM0_level2.evt modeM0/AS1G05_222T01_9000000520_04085cztM0_level2_quad_clean.evt
Size (bytes)500,137,92085,438,080
Size477.0 MB 81.5 MB
Events in quadrant A4,002,630520,365
Events in quadrant B3,625,459528,194
Events in quadrant C3,474,786519,633
Events in quadrant D3,537,274500,205

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171783
B0158742
C0156722
D0160392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74511261.691048%
B74511411.892363%
C74511051.409207%
D7451991.328681%

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 8736 7454 42 42 0.48% 0.56%
B 8736 7452 15 15 0.17% 0.20%
C 8736 7453 8 8 0.09% 0.11%
D 8736 7454 21 21 0.24% 0.28%

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 0 199 498041 2730.54 875 854 182.1
A 0 50 89654 487.69 875 854 182.1
A 0 226 52142 281.67 875 854 182.1
B 10 16 87191 495.57 891 869 174.2
B 4 48 21389 117.8 891 869 174.2
B 15 204 20340 111.78 891 869 174.2
C 9 144 93156 448.88 864 868 205.6
C 13 61 7118 30.4 864 868 205.6
C 4 253 4526 17.79 864 868 205.6
D 10 172 67029 309.54 859 832 213.9
D 2 14 47391 217.71 859 832 213.9
D 13 239 42892 196.67 859 832 213.9

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