ASTROSAT CZTI

Data Quality Report

Orbit 55131

Creation date: 2025-12-08T10:53:16.011900
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/AS1A14_022T16_9000006532_55131cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55131cztM0_level2_quad_clean.evt
Size (bytes)479,177,28094,610,880
Size457.0 MB 90.2 MB
Events in quadrant A6,348,111566,733
Events in quadrant B2,895,880681,815
Events in quadrant C3,366,628595,023
Events in quadrant D4,591,838541,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237550
B0140169
C0152460
D0185814

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A688594913.783588%
B6881140.203459%
C6885590.856935%
D68832914.227808%

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 6885 6885 747 747 10.85% 10.85%
B 6886 6883 2 2 0.03% 0.03%
C 6885 6885 53 53 0.77% 0.77%
D 6885 6884 283 283 4.11% 4.11%

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 7 190 2500514 15008.26 673 655 166.6
A 4 206 465258 2789.31 673 655 166.6
A 15 32 368354 2207.53 673 655 166.6
B 0 182 40042 259.15 702 676 151.9
B 5 185 28572 183.64 702 676 151.9
B 2 249 22503 143.69 702 676 151.9
C 13 3 284735 1519.65 686 680 186.9
C 6 223 170095 906.35 686 680 186.9
C 14 254 84464 448.23 686 680 186.9
D 11 129 842862 4424.63 674 647 190.3
D 15 94 567641 2978.74 674 647 190.3
D 11 176 132538 692.9 674 647 190.3

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