ASTROSAT CZTI

Data Quality Report

Orbit 44326

Creation date: 2024-06-27T23:02:08.723260
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_059T01_9000005990_44326cztM0_level2.fits modeM0/AS1A13_059T01_9000005990_44326cztM0_level2_quad_clean.evt
Size (bytes)504,895,680119,600,640
Size481.5 MB 114.1 MB
Events in quadrant A5,368,280798,505
Events in quadrant B4,099,524817,151
Events in quadrant C3,380,752797,513
Events in quadrant D5,269,722696,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222722
B0170892
C0152632
D0207032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73552513.412644%
B73553074.174031%
C7355971.318831%
D73555928.048946%

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 9175 7355 26 26 0.28% 0.35%
B 9175 7355 73 73 0.80% 0.99%
C 9175 7356 4 4 0.04% 0.05%
D 9175 7355 420 420 4.58% 5.71%

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 1767071 9988.5 854 837 176.8
A 7 3 157207 884.31 854 837 176.8
A 10 248 75224 420.68 854 837 176.8
B 5 255 393003 2328.89 849 823 168.4
B 0 219 146823 866.99 849 823 168.4
B 0 190 61521 360.44 849 823 168.4
C 14 254 78493 388.98 843 846 199.6
C 1 3 12327 57.52 843 846 199.6
C 3 233 7254 32.1 843 846 199.6
D 13 249 1307243 6277.33 822 796 208.1
D 2 153 314838 1508.94 822 796 208.1
D 12 233 100807 480.54 822 796 208.1

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