ASTROSAT CZTI

Data Quality Report

Orbit 09209

Creation date: 2024-06-27T15:42:44.084078
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/AS1C02_042T02_9000001284_09209cztM0_level2.evt modeM0/AS1C02_042T02_9000001284_09209cztM0_level2_quad_clean.evt
Size (bytes)581,901,12078,390,720
Size554.9 MB 74.8 MB
Events in quadrant A4,775,325467,166
Events in quadrant B3,969,806473,488
Events in quadrant C3,544,387465,472
Events in quadrant D4,826,046446,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01938010
B0165604
C0155936
D01948910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74863324.434945%
B74873044.060371%
C74862242.992252%
D74853224.301937%

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 7718 7489 7 7 0.09% 0.09%
B 7718 7489 9 9 0.12% 0.12%
C 7718 7489 0 0 0.00% 0.00%
D 7718 7489 41 41 0.53% 0.55%

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 8 5 980023 5153.26 916 896 190.0
A 1 162 129962 679.29 916 896 190.0
A 13 251 42019 216.44 916 896 190.0
B 8 234 311411 1733.69 922 900 179.1
B 12 111 19904 106.11 922 900 179.1
B 4 48 19885 106.0 922 900 179.1
C 3 233 48302 226.14 896 899 209.6
C 13 61 6838 28.33 896 899 209.6
C 8 222 2873 9.42 896 899 209.6
D 1 52 1231032 5602.53 882 857 219.6
D 9 64 126915 574.1 882 857 219.6
D 12 233 62019 278.55 882 857 219.6

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