ASTROSAT CZTI

Data Quality Report

Orbit 31792

Creation date: 2024-06-27T20:32:48.802282
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/AS1T04_041T01_9000004642_31792cztM0_level2.evt modeM0/AS1T04_041T01_9000004642_31792cztM0_level2_quad_clean.evt
Size (bytes)737,611,200103,953,600
Size703.4 MB 99.1 MB
Events in quadrant A8,113,934612,689
Events in quadrant B5,512,167697,419
Events in quadrant C3,988,247671,786
Events in quadrant D4,234,569660,912

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291361
B0220161
C0165061
D0174051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7252158921.911197%
B72521051.447876%
C72522172.992278%
D7253590.813457%

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 7442 7253 1019 1019 13.69% 14.05%
B 7442 7253 8 8 0.11% 0.11%
C 7442 7253 18 18 0.24% 0.25%
D 7443 7254 21 21 0.28% 0.29%

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 4972989 30437.67 812 797 163.4
A 13 254 12604 72.28 812 797 163.4
A 3 137 8392 46.49 812 797 163.4
B 6 159 1954652 11645.26 871 849 167.8
B 10 245 57154 335.59 871 849 167.8
B 5 255 40865 238.51 871 849 167.8
C 0 10 306795 1513.33 850 857 202.2
C 3 233 155509 764.99 850 857 202.2
C 14 238 152507 750.14 850 857 202.2
D 8 195 746440 3642.1 855 834 204.7
D 2 250 119934 581.77 855 834 204.7
D 1 52 42301 202.56 855 834 204.7

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