ASTROSAT CZTI

Data Quality Report

Orbit 36685

Creation date: 2024-06-27T21:30:15.969272
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/AS1T05_041T01_9000005234_36685cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36685cztM0_level2_quad_clean.evt
Size (bytes)494,939,520108,288,000
Size472.0 MB 103.3 MB
Events in quadrant A2,833,629728,719
Events in quadrant B3,220,418727,804
Events in quadrant C4,176,868717,360
Events in quadrant D4,356,667691,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122753
B0132462
C0160372
D0169232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5921150.253336%
B5921410.692451%
C59213636.130721%
D59213325.607161%

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 7353 5922 4 4 0.05% 0.07%
B 7353 5922 22 22 0.30% 0.37%
C 7353 5922 322 322 4.38% 5.44%
D 7353 5922 282 282 3.84% 4.76%

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 231260 1731.86 661 648 133.2
A 9 143 28983 212.79 661 648 133.2
A 13 6 14184 101.65 661 648 133.2
B 0 189 322787 2578.66 655 638 124.9
B 5 255 126800 1009.87 655 638 124.9
B 4 232 42844 337.84 655 638 124.9
C 1 23 950904 6531.81 631 636 145.5
C 0 10 370021 2539.03 631 636 145.5
C 15 214 262457 1799.67 631 636 145.5
D 2 153 297035 1924.21 635 617 154.0
D 12 233 284054 1839.94 635 617 154.0
D 2 249 267554 1732.83 635 617 154.0

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