ASTROSAT CZTI

Data Quality Report

Orbit 04620

Creation date: 2024-06-27T14:44:39.212651
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_154T01_9000000576_04620cztM0_level2.evt modeM0/AS1G05_154T01_9000000576_04620cztM0_level2_quad_clean.evt
Size (bytes)501,376,32064,252,800
Size478.1 MB 61.3 MB
Events in quadrant A3,545,056361,151
Events in quadrant B3,713,448363,481
Events in quadrant C3,360,801364,399
Events in quadrant D4,065,921345,070

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155884
B0158793
C0152073
D0173563

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73331351.840993%
B73331782.427383%
C73331031.404609%
D73332082.836493%

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 7888 7335 8 8 0.10% 0.11%
B 7888 7335 24 24 0.30% 0.33%
C 7888 7335 0 0 0.00% 0.00%
D 7888 7335 90 90 1.14% 1.23%

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 8 15 88786 493.32 869 850 178.3
A 13 251 56850 314.16 869 850 178.3
A 12 133 32403 177.01 869 850 178.3
B 10 16 137629 791.22 883 861 172.9
B 4 48 44726 253.76 883 861 172.9
B 15 204 28285 158.65 883 861 172.9
C 14 48 26746 129.33 850 855 200.2
C 13 61 7152 31.45 850 855 200.2
C 5 250 5566 23.53 850 855 200.2
D 2 234 399038 1941.13 835 810 205.2
D 2 136 164768 799.2 835 810 205.2
D 13 235 126206 611.23 835 810 205.2

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