ASTROSAT CZTI

Data Quality Report

Orbit 45885

Creation date: 2024-06-27T23:17:18.115746
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_001T01_9000006136_45885cztM0_level2.fits modeM0/AS1C07_001T01_9000006136_45885cztM0_level2_quad_clean.evt
Size (bytes)623,666,88095,296,320
Size594.8 MB 90.9 MB
Events in quadrant A6,373,508630,330
Events in quadrant B8,861,485545,089
Events in quadrant C2,758,108676,704
Events in quadrant D4,603,994592,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231450
B0307670
C0130120
D0179580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63125688.998733%
B6313185529.383811%
C6313310.491050%
D63133235.116426%

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 6312 6312 486 486 7.70% 7.70%
B 6313 6313 1176 1176 18.63% 18.63%
C 6313 6313 12 12 0.19% 0.19%
D 6313 6313 252 252 3.99% 3.99%

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 2436636 17040.27 681 667 143.0
A 0 247 1174188 8209.1 681 667 143.0
A 0 226 80572 558.96 681 667 143.0
B 3 112 6229646 50068.84 634 613 124.4
B 4 158 48829 387.56 634 613 124.4
B 0 190 19863 154.73 634 613 124.4
C 12 2 43540 267.0 685 687 160.5
C 2 14 18387 110.28 685 687 160.5
C 10 20 10296 59.87 685 687 160.5
D 13 249 617742 3686.3 667 644 167.4
D 1 52 595559 3553.79 667 644 167.4
D 11 192 201089 1197.38 667 644 167.4

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