ASTROSAT CZTI

Data Quality Report

Orbit 20330

Creation date: 2024-06-27T18:13:58.171947
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/AS1A05_174T01_9000003008_20330cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20330cztM0_level2_quad_clean.evt
Size (bytes)873,086,400153,434,880
Size832.6 MB 146.3 MB
Events in quadrant A6,095,544952,326
Events in quadrant B7,069,144955,739
Events in quadrant C6,179,798923,314
Events in quadrant D6,222,537923,116

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266503
B0293623
C0266143
D0273823

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129152091.618273%
B129165083.933106%
C129152391.850561%
D129151711.324042%

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 14695 12916 1 1 0.01% 0.01%
B 14696 12917 189 189 1.29% 1.46%
C 14695 12917 1 1 0.01% 0.01%
D 14695 12918 25 25 0.17% 0.19%

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 5 16 20551 59.38 1570 1534 320.2
A 15 191 19401 55.79 1570 1534 320.2
A 13 254 17147 48.75 1570 1534 320.2
B 4 142 616115 2063.77 1538 1496 297.8
B 7 220 124798 414.02 1538 1496 297.8
B 3 64 66359 217.8 1538 1496 297.8
C 14 238 233903 653.74 1507 1516 355.5
C 0 207 33993 91.36 1507 1516 355.5
C 10 91 12774 31.67 1507 1516 355.5
D 1 52 204698 540.92 1538 1495 375.7
D 9 1 68622 178.69 1538 1495 375.7
D 2 234 57004 147.76 1538 1495 375.7

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