ASTROSAT CZTI

Data Quality Report

Orbit 18501

Creation date: 2024-06-27T17:50:38.743247
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_075T08_9000002744_18501cztM0_level2.evt modeM0/AS1A05_075T08_9000002744_18501cztM0_level2_quad_clean.evt
Size (bytes)534,686,400100,805,760
Size509.9 MB 96.1 MB
Events in quadrant A4,445,845635,671
Events in quadrant B4,096,636657,868
Events in quadrant C3,448,227636,938
Events in quadrant D3,710,993618,174

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181592
B0171242
C0150192
D0162642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72433274.514704%
B72431822.512771%
C7243821.132128%
D72421011.394642%

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 7973 7243 182 182 2.28% 2.51%
B 7973 7243 49 49 0.61% 0.68%
C 7973 7243 0 0 0.00% 0.00%
D 7972 7243 34 34 0.43% 0.47%

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 13 1077632 6167.02 862 844 174.6
A 14 111 26450 146.65 862 844 174.6
A 15 192 14123 76.05 862 844 174.6
B 10 245 637861 3767.75 879 857 169.1
B 12 111 20065 113.61 879 857 169.1
B 11 111 16998 95.47 879 857 169.1
C 14 238 131996 660.27 845 851 198.6
C 3 233 10406 48.11 845 851 198.6
C 9 54 7061 31.27 845 851 198.6
D 7 238 256682 1243.98 848 824 205.7
D 12 110 100417 484.22 848 824 205.7
D 7 38 62396 299.36 848 824 205.7

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