ASTROSAT CZTI

Data Quality Report

Orbit 40388

Creation date: 2024-06-27T22:15:31.763889
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/AS1A12_056T02_9000005538_40388cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40388cztM0_level2_quad_clean.evt
Size (bytes)323,058,24098,190,720
Size308.1 MB 93.6 MB
Events in quadrant A3,267,261681,792
Events in quadrant B2,616,463701,946
Events in quadrant C2,663,663660,572
Events in quadrant D3,009,737568,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128363
B0107802
C0108042
D0121882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51481032.000777%
B5148140.271950%
C5148170.330225%
D51484418.566434%

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 7240 5149 68 68 0.94% 1.32%
B 7240 5149 5 5 0.07% 0.10%
C 7240 5149 8 8 0.11% 0.16%
D 7240 5149 33 33 0.46% 0.64%

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 477054 3774.89 628 619 126.2
A 13 248 301802 2386.33 628 619 126.2
A 7 191 42393 330.98 628 619 126.2
B 4 170 66313 557.39 624 610 117.9
B 0 230 43385 362.88 624 610 117.9
B 4 171 32464 270.23 624 610 117.9
C 15 214 223921 1602.75 604 609 139.3
C 0 10 64329 457.33 604 609 139.3
C 12 249 17393 120.46 604 609 139.3
D 2 250 179124 1249.64 584 570 142.9
D 12 191 169535 1182.53 584 570 142.9
D 13 171 109147 759.89 584 570 142.9

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