ASTROSAT CZTI

Data Quality Report

Orbit 45066

Creation date: 2024-06-27T23:09:32.744598
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/AS1A13_020T01_9000006040_45066cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45066cztM0_level2_quad_clean.evt
Size (bytes)436,138,56098,832,960
Size415.9 MB 94.3 MB
Events in quadrant A4,656,963659,756
Events in quadrant B2,771,959686,010
Events in quadrant C2,757,731660,764
Events in quadrant D5,499,575573,696

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183111
B0122641
C0122941
D0204681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5901911.542112%
B5902570.965774%
C5902460.779397%
D59023816.455439%

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 6976 5902 0 0 0.00% 0.00%
B 6977 5903 5 5 0.07% 0.08%
C 6977 5903 18 18 0.26% 0.30%
D 6977 5903 264 264 3.78% 4.47%

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 2019692 14292.23 675 660 141.3
A 7 3 15792 107.12 675 660 141.3
A 3 137 7565 48.88 675 660 141.3
B 0 186 35325 260.22 675 654 133.2
B 15 201 27318 200.12 675 654 133.2
B 5 255 17939 129.73 675 654 133.2
C 14 254 91335 568.23 676 681 159.5
C 3 233 17675 106.52 676 681 159.5
C 1 3 12781 75.84 676 681 159.5
D 13 174 747611 4488.4 655 636 166.4
D 1 52 459622 2757.94 655 636 166.4
D 5 235 447902 2687.52 655 636 166.4

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