ASTROSAT CZTI

Data Quality Report

Orbit 28476

Creation date: 2024-06-27T19:52:09.919403
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_050T06_9000004092_28476cztM0_level2.evt modeM0/AS1A10_050T06_9000004092_28476cztM0_level2_quad_clean.evt
Size (bytes)714,605,760101,062,080
Size681.5 MB 96.4 MB
Events in quadrant A3,699,049673,328
Events in quadrant B7,479,463597,290
Events in quadrant C3,746,732647,697
Events in quadrant D6,214,022624,768

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158512
B0272892
C0158482
D0236112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7423861.158561%
B7423138818.698639%
C74231181.589654%
D742281610.994341%

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 7763 7424 12 12 0.15% 0.16%
B 7763 7423 1008 1008 12.98% 13.58%
C 7763 7424 2 2 0.03% 0.03%
D 7762 7423 658 658 8.48% 8.86%

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 12 96 162249 871.9 916 897 185.1
A 13 254 10988 54.53 916 897 185.1
A 3 137 9267 45.23 916 897 185.1
B 10 245 4072361 24683.88 842 822 164.9
B 10 246 95860 576.17 842 822 164.9
B 12 111 20901 121.73 842 822 164.9
C 14 238 139351 665.67 880 886 208.0
C 15 208 121312 578.95 880 886 208.0
C 10 22 28510 132.8 880 886 208.0
D 8 195 2070094 10032.35 864 841 206.3
D 1 52 830992 4024.82 864 841 206.3
D 2 234 24482 114.62 864 841 206.3

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