ASTROSAT CZTI

Data Quality Report

Orbit 08760

Creation date: 2024-06-27T15:36:50.716525
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/AS1A03_038T01_9000001218_08760cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08760cztM0_level2_quad_clean.evt
Size (bytes)481,950,72097,894,080
Size459.6 MB 93.4 MB
Events in quadrant A3,422,113618,514
Events in quadrant B3,314,678627,931
Events in quadrant C3,245,526622,242
Events in quadrant D4,122,388592,501

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150763
B0148742
C0148102
D0175432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7230260.359613%
B7230250.345781%
C7230110.152144%
D72301672.309820%

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 7710 7231 8 8 0.10% 0.11%
B 7710 7231 2 2 0.03% 0.03%
C 7710 7231 1 1 0.01% 0.01%
D 7710 7231 131 131 1.70% 1.81%

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 13 251 109299 631.33 841 822 171.8
A 5 16 42307 241.44 841 822 171.8
A 13 14 20005 111.64 841 822 171.8
B 12 111 18199 107.09 845 825 162.2
B 11 111 14841 86.39 845 825 162.2
B 4 80 11592 66.37 845 825 162.2
C 9 54 21054 104.66 824 829 193.2
C 13 61 6056 27.05 824 829 193.2
C 14 64 5486 24.1 824 829 193.2
D 1 52 832374 3980.62 807 791 208.9
D 2 152 143270 682.02 807 791 208.9
D 2 14 34474 161.23 807 791 208.9

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