ASTROSAT CZTI

Data Quality Report

Orbit 25266

Creation date: 2024-06-27T19:15:42.430842
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/AS1A09_027T02_9000003696_25266cztM0_level2.evt modeM0/AS1A09_027T02_9000003696_25266cztM0_level2_quad_clean.evt
Size (bytes)954,751,68093,479,040
Size910.5 MB 89.1 MB
Events in quadrant A3,381,540642,639
Events in quadrant B9,351,853526,628
Events in quadrant C3,816,021618,870
Events in quadrant D11,866,856526,112

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150430
B0327530
C0160390
D0404520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7406570.769646%
B7407276437.316052%
C74071572.119617%
D7407179924.287836%

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 7911 7407 0 0 0.00% 0.00%
B 7912 7408 1663 1663 21.02% 22.45%
C 7912 7408 6 6 0.08% 0.08%
D 7912 7408 1545 1545 19.53% 20.86%

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 3 1 26082 144.1 870 851 175.1
A 13 254 12302 65.4 870 851 175.1
A 3 137 7751 39.41 870 851 175.1
B 3 64 6511683 48571.01 711 692 134.1
B 0 190 33903 247.75 711 692 134.1
B 12 111 16502 117.94 711 692 134.1
C 0 207 188116 951.31 840 843 196.9
C 3 233 142992 722.09 840 843 196.9
C 14 238 134572 679.31 840 843 196.9
D 9 35 4122458 21645.7 784 759 190.4
D 8 195 1652271 8673.15 784 759 190.4
D 1 239 1595919 8377.21 784 759 190.4

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