ASTROSAT CZTI

Data Quality Report

Orbit 04090

Creation date: 2024-06-27T14:37:12.649757
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/AS1G05_222T01_9000000520_04090cztM0_level2.evt modeM0/AS1G05_222T01_9000000520_04090cztM0_level2_quad_clean.evt
Size (bytes)1,667,537,280252,132,480
Size1.6 GB 240.5 MB
Events in quadrant A11,314,0751,507,390
Events in quadrant B14,005,1091,498,814
Events in quadrant C11,564,3521,499,181
Events in quadrant D11,955,5741,438,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05020
B05020
C05020
D05020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050908112
B057533171
C051953127
D053834144

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245814861.977137%
B245768613.503418%
C245754922.002035%
D245735772.348106%

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 26686 24607 23 23 0.09% 0.09%
B 26686 24607 326 326 1.22% 1.32%
C 26686 24606 181 181 0.68% 0.74%
D 26686 24606 179 179 0.67% 0.73%

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 15 234 132043 221.75 2837 2764 583.0
A 0 50 98232 163.76 2837 2764 583.0
A 0 199 83142 137.87 2837 2764 583.0
B 10 16 1582994 2905.32 2844 2775 543.9
B 3 0 580559 1062.29 2844 2775 543.9
B 14 167 307616 560.47 2844 2775 543.9
C 12 204 680976 1051.4 2763 2774 645.0
C 8 128 25617 35.41 2763 2774 645.0
C 9 144 25516 35.26 2763 2774 645.0
D 12 233 275476 407.61 2757 2666 669.3
D 13 239 271171 401.18 2757 2666 669.3
D 11 132 195984 288.84 2757 2666 669.3

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