ASTROSAT CZTI

Data Quality Report

Orbit 32872

Creation date: 2024-06-27T20:42:50.607132
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/AS1A11_005T04_9000004742_32872cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32872cztM0_level2_quad_clean.evt
Size (bytes)515,782,08072,385,920
Size491.9 MB 69.0 MB
Events in quadrant A3,453,516476,106
Events in quadrant B3,435,504487,874
Events in quadrant C2,806,700491,105
Events in quadrant D5,576,012375,587

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137503
B0133172
C0115502
D0200202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5149480.932220%
B51493035.884638%
C5149390.757429%
D514996818.799767%

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 7151 5150 8 8 0.11% 0.16%
B 7151 5150 191 191 2.67% 3.71%
C 7151 5150 25 25 0.35% 0.49%
D 7151 5150 842 842 11.77% 16.35%

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 63 976778 7769.98 634 625 125.6
A 13 6 19412 149.54 634 625 125.6
A 13 254 9579 71.27 634 625 125.6
B 5 172 742789 6380.72 632 619 116.3
B 0 197 82336 702.55 632 619 116.3
B 12 1 63353 539.35 632 619 116.3
C 3 233 173611 1197.78 630 637 144.4
C 0 10 104166 716.9 630 637 144.4
C 14 67 37354 254.25 630 637 144.4
D 12 233 2037642 14729.75 556 544 138.3
D 8 195 655604 4736.57 556 544 138.3
D 12 218 212671 1533.84 556 544 138.3

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