ASTROSAT CZTI

Data Quality Report

Orbit 30946

Creation date: 2024-06-27T20:21:29.246308
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/AS1A10_058T10_9000004472_30946cztM0_level2.evt modeM0/AS1A10_058T10_9000004472_30946cztM0_level2_quad_clean.evt
Size (bytes)652,055,040103,052,160
Size621.8 MB 98.3 MB
Events in quadrant A3,392,924695,534
Events in quadrant B5,351,222700,759
Events in quadrant C3,701,044679,045
Events in quadrant D6,876,994606,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141152
B0199472
C0150983
D0246572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6299540.857279%
B62991382.190824%
C62982103.334392%
D6298140722.340426%

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 7584 6299 1 1 0.01% 0.02%
B 7584 6299 3 3 0.04% 0.05%
C 7583 6298 31 31 0.41% 0.49%
D 7582 6297 1099 1099 14.49% 17.45%

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 11 47 11713 62.56 875 860 173.5
A 13 254 11549 61.62 875 860 173.5
A 3 137 8196 42.29 875 860 173.5
B 6 159 1819625 11238.48 871 853 161.8
B 0 190 40596 245.58 871 853 161.8
B 0 183 31048 186.58 871 853 161.8
C 14 238 158268 799.48 851 861 196.9
C 0 10 155599 785.92 851 861 196.9
C 14 254 33723 166.91 851 861 196.9
D 13 174 1896989 10213.44 799 784 185.7
D 15 47 1328487 7151.34 799 784 185.7
D 2 250 287467 1544.15 799 784 185.7

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