ASTROSAT CZTI

Data Quality Report

Orbit 28572

Creation date: 2024-06-27T19:53:29.305076
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_110T01_9000004104_28572cztM0_level2.evt modeM0/AS1A10_110T01_9000004104_28572cztM0_level2_quad_clean.evt
Size (bytes)623,013,12067,173,120
Size594.2 MB 64.1 MB
Events in quadrant A3,546,623411,541
Events in quadrant B3,866,637415,290
Events in quadrant C3,637,821400,245
Events in quadrant D7,380,863357,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146291
B0156681
C0148901
D0264821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6444711.101800%
B64451021.582622%
C64451021.582622%
D6445143622.280838%

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 7699 6444 0 0 0.00% 0.00%
B 7700 6445 8 8 0.10% 0.12%
C 7700 6445 0 0 0.00% 0.00%
D 7700 6445 1196 1196 15.53% 18.56%

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 9397 46.54 918 906 182.4
A 3 137 8018 38.98 918 906 182.4
A 0 226 7752 37.53 918 906 182.4
B 15 33 212323 1243.79 903 883 170.0
B 4 171 58520 339.05 903 883 170.0
B 10 247 37073 212.89 903 883 170.0
C 14 238 144570 704.09 885 894 204.1
C 10 22 24736 116.84 885 894 204.1
C 7 247 20542 96.29 885 894 204.1
D 1 52 4138324 21736.23 813 796 190.4
D 8 195 108405 565.32 813 796 190.4
D 2 250 45535 235.03 813 796 190.4

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