ASTROSAT CZTI

Data Quality Report

Orbit 20963

Creation date: 2024-06-27T18:21:49.915693
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/AS1T03_131T01_9000003090_20963cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20963cztM0_level2_quad_clean.evt
Size (bytes)558,483,84087,756,480
Size532.6 MB 83.7 MB
Events in quadrant A3,924,391535,427
Events in quadrant B3,838,347549,681
Events in quadrant C3,658,918536,694
Events in quadrant D4,985,679516,358

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163992
B0160362
C0155282
D0197422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74662843.803911%
B74662713.629788%
C74662723.643182%
D74664135.531744%

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 7746 7467 48 48 0.62% 0.64%
B 7746 7467 8 8 0.10% 0.11%
C 7746 7467 1 1 0.01% 0.01%
D 7746 7467 146 146 1.88% 1.96%

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 5 16 369231 1962.07 925 905 187.7
A 0 226 7923 37.38 925 905 187.7
A 3 137 7735 36.38 925 905 187.7
B 7 220 135371 752.91 926 898 178.6
B 3 64 28246 153.12 926 898 178.6
B 7 219 21911 117.65 926 898 178.6
C 14 238 139332 664.16 893 897 208.4
C 9 54 23632 109.07 893 897 208.4
C 7 247 11216 49.51 893 897 208.4
D 7 238 640470 2954.25 895 868 216.5
D 7 223 438675 2022.18 895 868 216.5
D 5 222 360125 1659.37 895 868 216.5

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