ASTROSAT CZTI

Data Quality Report

Orbit 30236

Creation date: 2024-06-27T20:12:29.712819
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_007T01_9000004350_30236cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30236cztM0_level2_quad_clean.evt
Size (bytes)545,693,760109,209,600
Size520.4 MB 104.2 MB
Events in quadrant A3,958,127710,928
Events in quadrant B5,164,418743,689
Events in quadrant C3,340,490727,669
Events in quadrant D3,633,430682,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159162
B0195902
C0138962
D0147112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63511612.535034%
B6351881.385609%
C6351921.448591%
D63511452.283105%

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 7586 6352 112 112 1.48% 1.76%
B 7586 6352 1 1 0.01% 0.02%
C 7586 6352 1 1 0.01% 0.02%
D 7586 6352 129 129 1.70% 2.03%

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 14 239 545904 3334.85 822 807 163.5
A 0 13 203986 1243.03 822 807 163.5
A 8 192 25035 148.22 822 807 163.5
B 6 159 1861970 11797.43 833 813 157.8
B 0 190 19966 121.41 833 813 157.8
B 12 111 19015 115.38 833 813 157.8
C 14 238 135743 703.51 815 825 191.8
C 2 114 14869 73.23 815 825 191.8
C 3 233 12903 62.98 815 825 191.8
D 8 195 284023 1461.5 789 772 193.8
D 13 104 275129 1415.61 789 772 193.8
D 2 250 26931 134.97 789 772 193.8

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