ASTROSAT CZTI

Data Quality Report

Orbit 36077

Creation date: 2022-08-10T06:13:43.368473
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/AS1T04_069T01_9000005158_36077cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36077cztM0_level2_quad_clean.evt
Size (bytes)492,670,08078,690,240
Size469.8 MB 75.0 MB
Events in quadrant A2,738,078521,278
Events in quadrant B2,915,142522,570
Events in quadrant C2,921,240512,625
Events in quadrant D5,960,283428,666

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117363
B0120472
C0121172
D0214922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5682100.175994%
B5682290.510384%
C5682130.228793%
D5682107518.919395%

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 7114 5683 1 1 0.01% 0.02%
B 7114 5683 10 10 0.14% 0.18%
C 7114 5683 7 7 0.10% 0.12%
D 7114 5683 951 951 13.37% 16.73%

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 179473 1354.18 652 639 132.1
A 9 143 20265 148.61 652 639 132.1
A 13 6 14583 105.59 652 639 132.1
B 0 190 90887 716.67 646 628 125.9
B 5 172 90752 715.6 646 628 125.9
B 5 255 67374 529.97 646 628 125.9
C 15 214 240133 1617.79 629 631 148.0
C 0 207 118426 795.68 629 631 148.0
C 0 10 74641 499.92 629 631 148.0
D 12 227 2711313 19206.01 574 558 141.1
D 12 6 369838 2616.39 574 558 141.1
D 1 52 327973 2319.77 574 558 141.1

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