ASTROSAT CZTI

Data Quality Report

Orbit 19357

Creation date: 2024-06-27T18:01:47.484370
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_204T01_9000002856_19357cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19357cztM0_level2_quad_clean.evt
Size (bytes)660,150,720104,837,760
Size629.6 MB 100.0 MB
Events in quadrant A3,460,960690,094
Events in quadrant B3,636,274691,032
Events in quadrant C3,568,063666,879
Events in quadrant D8,816,956601,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154203
B0157923
C0156093
D0313573

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7528220.292242%
B7529640.850046%
C7529771.022712%
D7528129417.189160%

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 7530 0 0 0.00% 0.00%
B 7764 7531 16 16 0.21% 0.21%
C 7764 7531 5 5 0.06% 0.07%
D 7763 7530 1315 1315 16.94% 17.46%

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 10622 53.85 896 875 181.0
A 0 226 7882 38.71 896 875 181.0
A 3 137 7381 35.94 896 875 181.0
B 0 230 44611 256.62 892 869 170.5
B 15 32 34072 194.79 892 869 170.5
B 0 229 23130 130.6 892 869 170.5
C 14 238 134343 658.0 865 872 202.8
C 9 160 29923 143.22 865 872 202.8
C 9 176 14226 65.83 865 872 202.8
D 10 66 3722797 18148.18 835 810 205.1
D 7 238 1359909 6626.88 835 810 205.1
D 11 176 289811 1409.15 835 810 205.1

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