ASTROSAT CZTI

Data Quality Report

Orbit 12272

Creation date: 2024-06-27T16:24:46.834509
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/AS1G08_064T01_9000001814_12272cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12272cztM0_level2_quad_clean.evt
Size (bytes)505,693,44078,353,280
Size482.3 MB 74.7 MB
Events in quadrant A3,723,034499,883
Events in quadrant B5,321,375500,145
Events in quadrant C2,670,184499,853
Events in quadrant D3,212,514472,963

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149762
B0195851
C0117931
D0134741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5718581.014341%
B571892516.176985%
C5718230.402239%
D57181071.871284%

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 6944 5720 8 8 0.12% 0.14%
B 6944 5720 637 637 9.17% 11.14%
C 6944 5720 8 8 0.12% 0.14%
D 6944 5720 65 65 0.94% 1.14%

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 13 251 630624 4523.3 689 676 139.3
A 1 162 129047 921.76 689 676 139.3
A 1 178 73630 523.84 689 676 139.3
B 0 85 2019037 16968.82 627 612 118.9
B 4 239 734531 6170.03 627 612 118.9
B 11 51 47109 390.9 627 612 118.9
C 14 234 69292 450.32 661 665 152.4
C 4 175 12387 76.92 661 665 152.4
C 15 208 7681 46.04 661 665 152.4
D 1 52 322985 2048.37 660 642 157.4
D 9 85 69947 440.41 660 642 157.4
D 10 199 60549 380.69 660 642 157.4

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