ASTROSAT CZTI

Data Quality Report

Orbit 23444

Creation date: 2024-06-27T18:54:26.341651
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/AS1A07_100T02_9000003470_23444cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23444cztM0_level2_quad_clean.evt
Size (bytes)578,211,840104,166,720
Size551.4 MB 99.3 MB
Events in quadrant A3,215,408687,266
Events in quadrant B3,467,741704,721
Events in quadrant C3,338,452671,759
Events in quadrant D7,028,445616,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139202
B0145622
C0140772
D0254242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6806250.367323%
B6806530.778725%
C6806841.234205%
D6806128618.895093%

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 8701 6808 0 0 0.00% 0.00%
B 8701 6808 7 7 0.08% 0.10%
C 8701 6807 0 0 0.00% 0.00%
D 8701 6807 1115 1115 12.81% 16.38%

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 13 254 11604 64.12 833 814 168.3
A 0 226 7388 39.06 833 814 168.3
A 3 137 7215 38.04 833 814 168.3
B 0 229 68559 424.11 838 815 159.7
B 0 189 64254 397.16 838 815 159.7
B 5 172 24936 151.01 838 815 159.7
C 14 238 127637 667.36 812 817 190.0
C 3 233 17326 86.87 812 817 190.0
C 1 16 13196 65.14 812 817 190.0
D 7 238 3622699 20076.8 750 729 180.4
D 1 52 323962 1791.7 750 729 180.4
D 12 233 111078 611.67 750 729 180.4

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