ASTROSAT CZTI

Data Quality Report

Orbit 11931

Creation date: 2024-06-27T16:20:14.917220
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/AS1A04_124T01_9000001766_11931cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11931cztM0_level2_quad_clean.evt
Size (bytes)566,415,360139,976,640
Size540.2 MB 133.5 MB
Events in quadrant A3,925,069940,655
Events in quadrant B4,558,690948,376
Events in quadrant C3,444,080930,561
Events in quadrant D4,695,607876,469

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168943
B0188582
C0161262
D0196242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78152363.019834%
B78154786.116443%
C7815680.870122%
D78154105.246321%

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 7876 7816 3 3 0.04% 0.04%
B 7876 7816 137 137 1.74% 1.75%
C 7876 7817 2 2 0.03% 0.03%
D 7876 7817 270 270 3.43% 3.45%

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 1 162 117186 621.6 908 886 187.1
A 8 15 99513 527.15 908 886 187.1
A 1 178 59970 315.79 908 886 187.1
B 4 239 674650 3855.45 906 881 174.8
B 15 204 194060 1105.41 906 881 174.8
B 3 64 38805 217.01 906 881 174.8
C 4 112 9392 41.77 878 878 203.8
C 13 61 6476 27.46 878 878 203.8
C 14 234 5195 21.18 878 878 203.8
D 13 122 793255 3885.49 858 829 203.9
D 1 52 181635 886.54 858 829 203.9
D 8 195 178857 872.92 858 829 203.9

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