ASTROSAT CZTI

Data Quality Report

Orbit 22811

Creation date: 2024-06-27T18:46:04.989852
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/AS1A07_054T01_9000003370_22811cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22811cztM0_level2_quad_clean.evt
Size (bytes)427,651,200135,109,440
Size407.8 MB 128.9 MB
Events in quadrant A3,173,261950,689
Events in quadrant B3,207,876947,323
Events in quadrant C3,035,432879,138
Events in quadrant D3,115,762884,908

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129941
B0131981
C0127191
D0130951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6164490.794938%
B6164711.151849%
C6164751.216742%
D6164380.616483%

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 7444 6165 0 0 0.00% 0.00%
B 7444 6165 0 0 0.00% 0.00%
C 7444 6165 0 0 0.00% 0.00%
D 7444 6165 10 10 0.13% 0.16%

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 13 252 62305 384.19 807 793 160.1
A 13 254 11312 65.7 807 793 160.1
A 0 226 7033 38.97 807 793 160.1
B 0 190 43806 290.5 791 774 148.1
B 0 230 26615 174.45 791 774 148.1
B 0 229 25724 168.43 791 774 148.1
C 14 238 122223 712.51 746 753 170.5
C 13 61 5369 27.08 746 753 170.5
C 2 16 2958 12.93 746 753 170.5
D 1 52 74059 400.49 771 749 183.1
D 1 239 41824 224.39 771 749 183.1
D 7 238 37781 202.3 771 749 183.1

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