ASTROSAT CZTI

Data Quality Report

Orbit 52530

Creation date: 2025-06-14T15:05:14.772359
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/AS1C09_011T06_9000006478_52530cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52530cztM0_level2_quad_clean.evt
Size (bytes)687,991,680108,371,520
Size656.1 MB 103.4 MB
Events in quadrant A3,570,374759,963
Events in quadrant B6,761,495700,589
Events in quadrant C6,272,557679,176
Events in quadrant D8,282,168619,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164971
B0253060
C0239540
D0299220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7500650.866667%
B7501105114.011465%
C75014455.932542%
D750191812.238368%

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 7500 7500 31 31 0.41% 0.41%
B 7501 7501 509 509 6.79% 6.79%
C 7501 7501 402 402 5.36% 5.36%
D 7501 7501 902 902 12.03% 12.03%

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 5 243 102800 490.28 806 785 208.1
A 15 174 95592 455.64 806 785 208.1
A 3 14 49683 235.0 806 785 208.1
B 12 32 2385995 15036.06 740 714 158.6
B 7 0 472896 2976.49 740 714 158.6
B 10 254 441494 2778.54 740 714 158.6
C 15 224 1511268 7149.96 750 740 211.3
C 15 233 507650 2399.42 750 740 211.3
C 13 3 378766 1789.35 750 740 211.3
D 6 42 2039369 9633.91 734 699 211.6
D 15 93 1102941 5208.74 734 699 211.6
D 8 176 679389 3207.21 734 699 211.6

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