ASTROSAT CZTI

Data Quality Report

Orbit 38018

Creation date: 2024-06-27T21:47:23.055490
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/AS1A11_082T01_9000005356_38018cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38018cztM0_level2_quad_clean.evt
Size (bytes)403,977,600101,174,400
Size385.3 MB 96.5 MB
Events in quadrant A3,104,753682,002
Events in quadrant B4,337,662661,041
Events in quadrant C2,919,784688,687
Events in quadrant D4,129,654616,443

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128003
B0167072
C0122392
D0161252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5939150.252568%
B59394958.334736%
C593970.117865%
D59392303.872706%

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 7253 5940 2 2 0.03% 0.03%
B 7253 5940 354 354 4.88% 5.96%
C 7253 5940 3 3 0.04% 0.05%
D 7253 5940 200 200 2.76% 3.37%

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 431931 3127.74 677 663 137.9
A 13 6 17166 119.69 677 663 137.9
A 9 143 14625 101.26 677 663 137.9
B 5 184 734818 5879.68 654 637 124.9
B 4 171 445875 3565.68 654 637 124.9
B 12 18 162479 1296.11 654 637 124.9
C 15 214 255915 1649.62 664 668 154.7
C 3 233 31105 196.71 664 668 154.7
C 0 10 17281 107.37 664 668 154.7
D 1 52 463013 2880.57 653 635 160.5
D 12 233 322411 2004.63 653 635 160.5
D 12 227 195651 1214.93 653 635 160.5

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