ASTROSAT CZTI

Data Quality Report

Orbit 42859

Creation date: 2024-06-27T22:45:04.615886
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/AS1T05_138T01_9000005828_42859cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42859cztM0_level2_quad_clean.evt
Size (bytes)1,134,040,320252,025,920
Size1.1 GB 240.4 MB
Events in quadrant A8,808,5321,699,032
Events in quadrant B7,674,5721,748,107
Events in quadrant C8,580,4541,760,650
Events in quadrant D15,688,8041,329,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352144
B0337884
C0353524
D0574504

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15840820.517677%
B158411450.915346%
C15841960.606022%
D15841272017.170633%

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 21300 15844 51 51 0.24% 0.32%
B 21301 15845 108 108 0.51% 0.68%
C 21301 15845 68 68 0.32% 0.43%
D 21301 15845 2516 2516 11.81% 15.88%

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 1584195 4443.73 1738 1701 356.1
A 12 189 233250 650.2 1738 1701 356.1
A 15 237 164890 458.24 1738 1701 356.1
B 5 255 596119 1771.77 1726 1676 335.5
B 5 172 69607 202.47 1726 1676 335.5
B 15 85 63229 183.46 1726 1676 335.5
C 15 214 638783 1589.57 1714 1724 400.8
C 12 2 587218 1460.91 1714 1724 400.8
C 14 254 308436 765.3 1714 1724 400.8
D 12 233 3904692 10408.9 1545 1503 375.0
D 1 52 2540078 6769.79 1545 1503 375.0
D 2 249 1317808 3510.28 1545 1503 375.0

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