ASTROSAT CZTI

Data Quality Report

Orbit 22672

Creation date: 2024-06-27T18:44:18.141239
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/AS1A08_007T01_9000003362_22672cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22672cztM0_level2_quad_clean.evt
Size (bytes)680,126,400102,957,120
Size648.6 MB 98.2 MB
Events in quadrant A3,894,792660,903
Events in quadrant B4,286,433665,125
Events in quadrant C3,926,318634,418
Events in quadrant D7,939,580592,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168774
B0180494
C0169094
D0291544

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8115991.219963%
B81161822.242484%
C81161501.848201%
D8116112913.910793%

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 8650 8119 0 0 0.00% 0.00%
B 8651 8120 5 5 0.06% 0.06%
C 8651 8120 2 2 0.02% 0.02%
D 8651 8119 796 796 9.20% 9.80%

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 14 235 21387 100.6 1002 979 202.9
A 13 254 15630 72.22 1002 979 202.9
A 0 226 8926 39.17 1002 979 202.9
B 0 219 89002 467.46 996 970 188.3
B 0 190 85278 447.68 996 970 188.3
B 0 229 79245 415.65 996 970 188.3
C 14 238 152536 679.35 952 955 223.1
C 10 22 39069 170.82 952 955 223.1
C 8 128 7963 31.41 952 955 223.1
D 12 235 1122867 4989.23 920 890 224.9
D 1 52 861295 3826.07 920 890 224.9
D 12 233 677500 3008.76 920 890 224.9

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