ASTROSAT CZTI

Data Quality Report

Orbit 26810

Creation date: 2024-06-27T19:33:13.050612
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/AS1A09_079T01_9000003864_26810cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26810cztM0_level2_quad_clean.evt
Size (bytes)808,323,84099,040,320
Size770.9 MB 94.5 MB
Events in quadrant A4,094,795690,477
Events in quadrant B12,877,662480,633
Events in quadrant C3,164,567699,215
Events in quadrant D3,912,604683,131

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163740
B0425750
C0132170
D0157890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63651001.571092%
B6366444869.871191%
C6366961.508011%
D63662253.534402%

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 7215 6366 13 13 0.18% 0.20%
B 7215 6366 3855 3855 53.43% 60.56%
C 7216 6367 6 6 0.08% 0.09%
D 7216 6367 174 174 2.41% 2.73%

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 1123750 7301.77 770 752 153.8
A 13 254 9395 56.2 770 752 153.8
A 3 137 6715 38.77 770 752 153.8
B 0 189 10815637 114405.35 504 491 94.5
B 10 246 27872 289.64 504 491 94.5
B 3 64 23186 240.07 504 491 94.5
C 14 238 122042 689.56 753 758 175.9
C 15 208 78431 441.61 753 758 175.9
C 3 233 22805 125.35 753 758 175.9
D 7 80 751610 4193.28 753 734 179.1
D 2 250 171441 953.32 753 734 179.1
D 1 52 101445 562.42 753 734 179.1

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