ASTROSAT CZTI

Data Quality Report

Orbit 21240

Creation date: 2024-06-27T18:25:20.021746
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_037T01_9000003140_21240cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21240cztM0_level2_quad_clean.evt
Size (bytes)754,614,72090,518,400
Size719.7 MB 86.3 MB
Events in quadrant A4,072,131579,723
Events in quadrant B3,969,257579,925
Events in quadrant C3,838,158570,805
Events in quadrant D10,438,832460,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173622
B0168812
C0165702
D0365082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79061972.491778%
B79071942.453522%
C79071752.213229%
D7907243230.757557%

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 8416 7907 34 34 0.40% 0.43%
B 8417 7909 12 12 0.14% 0.15%
C 8417 7908 0 0 0.00% 0.00%
D 8417 7909 2129 2129 25.29% 26.92%

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 181464 907.99 977 957 198.8
A 12 96 73684 365.83 977 957 198.8
A 11 47 33452 163.46 977 957 198.8
B 0 190 36519 188.13 975 953 189.1
B 3 64 34125 175.46 975 953 189.1
B 0 197 26986 137.7 975 953 189.1
C 14 238 142805 633.85 939 945 223.8
C 0 207 19310 82.06 939 945 223.8
C 8 128 11924 49.06 939 945 223.8
D 1 239 4978616 26207.69 772 751 189.9
D 7 238 2000016 10525.82 772 751 189.9
D 13 153 178812 937.46 772 751 189.9

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