ASTROSAT CZTI

Data Quality Report

Orbit 45131

Creation date: 2024-06-27T23:09:47.839688
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_017T02_9000006046_45131cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45131cztM0_level2_quad_clean.evt
Size (bytes)710,746,560117,351,360
Size677.8 MB 111.9 MB
Events in quadrant A11,108,393634,897
Events in quadrant B4,354,389847,603
Events in quadrant C3,958,992820,831
Events in quadrant D6,289,441712,375

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382830
B0180680
C0171920
D0238840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7724219428.404972%
B77242242.900052%
C7724971.255826%
D77255617.262136%

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 7725 7725 1718 1718 22.24% 22.24%
B 7725 7725 87 87 1.13% 1.13%
C 7725 7725 60 60 0.78% 0.78%
D 7726 7726 419 419 5.42% 5.42%

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 15 223 5580520 32941.47 809 789 169.4
A 10 83 2349574 13866.69 809 789 169.4
A 0 243 37384 216.05 809 789 169.4
B 3 112 252154 1379.45 901 872 182.2
B 5 32 158085 863.04 901 872 182.2
B 0 183 132347 721.75 901 872 182.2
C 14 254 300921 1407.73 895 901 213.1
C 1 3 113400 527.86 895 901 213.1
C 12 250 33805 154.39 895 901 213.1
D 13 29 720486 3221.0 878 849 223.4
D 4 223 534539 2388.73 878 849 223.4
D 13 249 323544 1444.34 878 849 223.4

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