ASTROSAT CZTI

Data Quality Report

Orbit 47262

Creation date: 2024-06-27T23:33:59.476630
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/AS1C09_008T03_9000006306_47262cztM0_level2.fits modeM0/AS1C09_008T03_9000006306_47262cztM0_level2_quad_clean.evt
Size (bytes)691,508,160100,589,760
Size659.5 MB 95.9 MB
Events in quadrant A7,357,261716,899
Events in quadrant B3,450,929746,797
Events in quadrant C2,955,858704,166
Events in quadrant D11,297,787395,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027610953
B015453353
C014527335
D0398591656

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01442
B01442
C01442
D01444

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68802193.183140%
B6953560.805408%
C6953240.345175%
D6849295043.071981%

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 7122 6994 42 42 0.59% 0.60%
B 7123 7046 22 22 0.31% 0.31%
C 7122 7051 22 22 0.31% 0.31%
D 7122 6965 2552 2552 35.83% 36.64%

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 3523174 22369.62 746 730 157.5
A 9 191 912267 5788.8 746 730 157.5
A 15 235 22682 139.41 746 730 157.5
B 0 200 269738 1816.32 751 727 148.1
B 5 32 73775 493.21 751 727 148.1
B 0 183 42661 283.13 751 727 148.1
C 14 254 92618 533.59 732 735 172.2
C 3 233 6400 32.9 732 735 172.2
C 13 61 4936 24.4 732 735 172.2
D 12 1 7712654 58986.54 518 500 130.7
D 6 112 1347080 10299.34 518 500 130.7
D 1 47 104399 794.67 518 500 130.7

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