ASTROSAT CZTI

Data Quality Report

Orbit 51659

Creation date: 2025-04-22T15:53:21.994715
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_031T01_9000006462_51659cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51659cztM0_level2_quad_clean.evt
Size (bytes)476,593,92083,839,680
Size454.5 MB 80.0 MB
Events in quadrant A4,023,994569,372
Events in quadrant B3,613,562602,912
Events in quadrant C5,697,208454,633
Events in quadrant D3,858,044507,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159560
B0144730
C0209660
D0155600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57762374.103186%
B57761402.423823%
C5776125721.762465%
D57762975.141967%

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 5776 5776 175 175 3.03% 3.03%
B 5776 5776 88 88 1.52% 1.52%
C 5776 5776 944 944 16.34% 16.34%
D 5776 5776 292 292 5.06% 5.06%

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 7 64 568459 3649.56 619 606 155.6
A 12 250 541480 3476.16 619 606 155.6
A 13 248 126133 806.75 619 606 155.6
B 12 32 300335 2264.81 612 592 132.3
B 1 223 101859 765.16 612 592 132.3
B 0 171 99005 743.59 612 592 132.3
C 15 189 1970718 12951.78 544 539 152.1
C 15 147 937874 6161.96 544 539 152.1
C 14 245 178021 1166.75 544 539 152.1
D 10 172 618183 3647.05 595 574 169.3
D 2 249 327601 1931.13 595 574 169.3
D 7 60 174659 1027.99 595 574 169.3

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