ASTROSAT CZTI

Data Quality Report

Orbit 18489

Creation date: 2024-06-27T17:50:30.910632
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/AS1A05_075T09_9000002740_18489cztM0_level2.evt modeM0/AS1A05_075T09_9000002740_18489cztM0_level2_quad_clean.evt
Size (bytes)587,226,24098,231,040
Size560.0 MB 93.7 MB
Events in quadrant A5,875,532598,927
Events in quadrant B3,754,995638,721
Events in quadrant C3,569,851622,602
Events in quadrant D4,087,277604,693

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223560
B0158620
C0151950
D0172070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A732177910.640623%
B73212323.168966%
C73222243.059273%
D73222994.083584%

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 7421 7321 453 453 6.10% 6.19%
B 7421 7321 3 3 0.04% 0.04%
C 7422 7322 0 0 0.00% 0.00%
D 7422 7322 65 65 0.88% 0.89%

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 0 13 2504138 14278.72 853 833 175.3
A 4 2 56075 315.1 853 833 175.3
A 15 174 24930 137.45 853 833 175.3
B 10 245 275224 1598.7 878 851 171.6
B 12 111 20797 116.22 878 851 171.6
B 7 220 20445 114.17 878 851 171.6
C 14 238 130580 651.18 844 847 199.2
C 3 233 122440 610.32 844 847 199.2
C 8 128 10689 49.4 844 847 199.2
D 1 52 633889 3025.71 854 826 209.2
D 7 238 174673 830.9 854 826 209.2
D 2 234 33653 156.9 854 826 209.2

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