ASTROSAT CZTI

Data Quality Report

Orbit 42436

Creation date: 2024-06-27T22:40:10.489483
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/AS1C07_001T10_9000005806_42436cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42436cztM0_level2_quad_clean.evt
Size (bytes)433,255,68088,928,640
Size413.2 MB 84.8 MB
Events in quadrant A3,101,781628,879
Events in quadrant B5,485,751487,268
Events in quadrant C2,825,414613,436
Events in quadrant D4,169,765555,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129352
B0206042
C0123502
D0165552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5846150.256586%
B5846137423.503250%
C5845220.376390%
D58453045.201027%

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 7160 5847 4 4 0.06% 0.07%
B 7160 5846 1106 1106 15.45% 18.92%
C 7159 5846 20 20 0.28% 0.34%
D 7159 5846 283 283 3.95% 4.84%

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 10 83 635114 5034.78 615 601 126.0
A 13 248 25675 198.96 615 601 126.0
A 15 222 21664 167.13 615 601 126.0
B 0 186 2903967 28349.04 528 513 102.4
B 5 255 346431 3377.51 528 513 102.4
B 5 172 38845 374.27 528 513 102.4
C 15 214 241576 1702.76 601 605 141.5
C 12 175 104883 736.85 601 605 141.5
C 14 254 58439 408.67 601 605 141.5
D 2 16 350728 2402.49 596 582 145.7
D 13 171 335502 2298.01 596 582 145.7
D 12 6 253345 1734.3 596 582 145.7

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