ASTROSAT CZTI

Data Quality Report

Orbit 20226

Creation date: 2024-06-27T18:12:41.486447
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/AS1A05_117T01_9000002998_20226cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20226cztM0_level2_quad_clean.evt
Size (bytes)563,019,84084,813,120
Size536.9 MB 80.9 MB
Events in quadrant A3,805,358521,358
Events in quadrant B4,401,931518,445
Events in quadrant C3,858,272496,502
Events in quadrant D4,466,245499,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162022
B0181202
C0160972
D0183392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76561602.089864%
B76562593.382968%
C76561872.442529%
D76562773.618077%

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 8421 7659 22 22 0.26% 0.29%
B 8421 7659 36 36 0.43% 0.47%
C 8421 7659 0 0 0.00% 0.00%
D 8421 7659 171 171 2.03% 2.23%

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 14 238 97367 491.86 961 939 196.0
A 0 226 8124 36.65 961 939 196.0
A 3 137 7850 35.25 961 939 196.0
B 0 197 203594 1109.97 946 922 182.6
B 6 36 185286 1009.7 946 922 182.6
B 7 220 173615 945.78 946 922 182.6
C 14 238 141642 650.05 914 920 216.5
C 3 233 137224 629.64 914 920 216.5
C 1 16 14514 62.79 914 920 216.5
D 12 17 428249 1894.7 929 903 225.5
D 7 238 113486 499.15 929 903 225.5
D 13 249 92826 407.55 929 903 225.5

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