ASTROSAT CZTI

Data Quality Report

Orbit 53198

Creation date: 2025-07-29T15:09:36.527266
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/AS1C09_011T06_9000006490_53198cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53198cztM0_level2_quad_clean.evt
Size (bytes)976,213,44077,362,560
Size931.0 MB 73.8 MB
Events in quadrant A3,577,470651,605
Events in quadrant B4,384,789685,727
Events in quadrant C8,889,557487,987
Events in quadrant D18,744,22330,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01391
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158439
B01807413
C03127155
D060257151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69851061.517538%
B69842934.195304%
C6975169124.243728%
D6971666995.667766%

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 6991 6989 47 47 0.67% 0.67%
B 6990 6987 108 108 1.55% 1.55%
C 6991 6985 1718 1718 24.57% 24.60%
D 6990 6972 6706 6706 95.94% 96.18%

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 62 226508 1267.55 722 703 178.1
A 4 77 166397 930.12 722 703 178.1
A 15 174 81013 450.82 722 703 178.1
B 2 249 540952 3602.89 709 684 150.0
B 4 81 333440 2219.05 709 684 150.0
B 1 255 217545 1446.18 709 684 150.0
C 1 241 2420549 13966.33 621 613 173.3
C 15 224 1748990 10090.52 621 613 173.3
C 0 240 1538282 8874.45 621 613 173.3
D 10 117 11309158 169223.0 230 219 66.8
D 15 125 6254193 93582.27 230 219 66.8
D 12 3 56207 837.78 230 219 66.8

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