ASTROSAT CZTI

Data Quality Report

Orbit 21672

Creation date: 2024-06-27T18:30:56.541714
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_143T01_9000003208_21672cztM0_level2.evt modeM0/AS1T03_143T01_9000003208_21672cztM0_level2_quad_clean.evt
Size (bytes)592,228,80090,627,840
Size564.8 MB 86.4 MB
Events in quadrant A3,460,465578,494
Events in quadrant B3,853,258585,502
Events in quadrant C3,638,448561,824
Events in quadrant D6,497,173518,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147051
B0157331
C0152091
D0239951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71751381.923345%
B71751932.689895%
C71751862.592334%
D71766318.793200%

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 7575 7177 0 0 0.00% 0.00%
B 7575 7177 25 25 0.33% 0.35%
C 7575 7177 8 8 0.11% 0.11%
D 7576 7178 512 512 6.76% 7.13%

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 9792 49.34 898 879 180.6
A 0 226 7641 37.43 898 879 180.6
A 3 137 7428 36.26 898 879 180.6
B 3 64 158948 928.63 893 871 170.2
B 0 230 80469 467.6 893 871 170.2
B 14 1 28760 163.84 893 871 170.2
C 14 238 135026 667.63 859 865 200.9
C 8 208 89550 441.33 859 865 200.9
C 10 22 43810 213.71 859 865 200.9
D 7 238 2066906 9932.2 851 826 208.0
D 1 52 1036461 4978.58 851 826 208.0
D 2 136 39158 184.27 851 826 208.0

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