ASTROSAT CZTI

Data Quality Report

Orbit 20530

Creation date: 2024-06-27T18:16:28.360572
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_115T03_9000003032_20530cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20530cztM0_level2_quad_clean.evt
Size (bytes)597,240,00076,714,560
Size569.6 MB 73.2 MB
Events in quadrant A3,561,685462,930
Events in quadrant B3,901,034465,233
Events in quadrant C3,627,877445,595
Events in quadrant D6,478,410417,334

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156581
B0164151
C0157321
D0243991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76401872.447644%
B76412142.800681%
C76412042.669808%
D76417629.972517%

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 7819 7640 0 0 0.00% 0.00%
B 7821 7642 7 7 0.09% 0.09%
C 7820 7641 1 1 0.01% 0.01%
D 7821 7641 609 609 7.79% 7.97%

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 11966 58.7 921 898 188.5
A 0 226 7884 37.05 921 898 188.5
A 3 137 7727 36.22 921 898 188.5
B 7 220 179800 1001.54 922 895 178.6
B 0 197 31315 170.3 922 895 178.6
B 12 111 21378 114.67 922 895 178.6
C 14 238 135737 644.75 885 886 209.2
C 8 208 13209 58.92 885 886 209.2
C 0 207 12619 56.1 885 886 209.2
D 1 52 1323274 6173.55 867 840 214.2
D 12 227 550252 2564.83 867 840 214.2
D 7 238 448447 2089.57 867 840 214.2

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