ASTROSAT CZTI

Data Quality Report

Orbit 53806

Creation date: 2025-09-08T12:38:14.992376
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_022T04_9000006506_53806cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53806cztM0_level2_quad_clean.evt
Size (bytes)1,007,187,84062,945,280
Size960.5 MB 60.0 MB
Events in quadrant A15,821,36910,724
Events in quadrant B3,701,906625,757
Events in quadrant C7,980,004458,106
Events in quadrant D9,294,567373,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0529601622
B015767281
C0294051349
D032634704

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01315
B01315
C01324
D01324

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6236615398.669019%
B63303275.165877%
C6253162225.939549%
D6274225936.005738%

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 7360 6262 5833 5833 79.25% 93.15%
B 7368 6378 129 129 1.75% 2.02%
C 7363 6314 1166 1166 15.84% 18.47%
D 7369 6337 1887 1887 25.61% 29.78%

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 3 63 14556675 221926.13 263 256 65.6
A 3 78 122573 1864.84 263 256 65.6
A 4 249 37794 572.3 263 256 65.6
B 5 185 573650 3961.89 675 652 144.6
B 5 172 373195 2575.88 675 652 144.6
B 0 213 31669 214.46 675 652 144.6
C 15 224 4980905 30425.53 596 588 163.7
C 12 2 254243 1549.62 596 588 163.7
C 7 64 112413 683.16 596 588 163.7
D 8 176 4211543 27761.14 535 511 151.7
D 1 241 1872031 12337.96 535 511 151.7
D 7 70 241985 1591.91 535 511 151.7

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