ASTROSAT CZTI

Data Quality Report

Orbit 54105

Creation date: 2025-09-28T16:38:38.464467
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_012T01_9000006512_54105cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54105cztM0_level2_quad_clean.evt
Size (bytes)452,718,72089,159,040
Size431.7 MB 85.0 MB
Events in quadrant A3,162,396597,405
Events in quadrant B3,042,736649,164
Events in quadrant C3,146,007575,624
Events in quadrant D6,905,592427,730

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143192
B0138751
C0142471
D0249941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64411462.266729%
B64421021.583359%
C6442991.536790%
D6442143522.275691%

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 7291 6441 64 64 0.88% 0.99%
B 7292 6443 20 20 0.27% 0.31%
C 7292 6443 38 38 0.52% 0.59%
D 7292 6443 1247 1247 17.10% 19.35%

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 15 174 315448 1914.18 670 653 164.5
A 0 8 111551 674.34 670 653 164.5
A 4 249 76202 459.39 670 653 164.5
B 4 81 131472 917.97 664 641 142.5
B 15 20 43978 304.07 664 641 142.5
B 5 236 33023 227.21 664 641 142.5
C 13 3 236022 1322.66 649 644 178.0
C 14 254 117086 654.32 649 644 178.0
C 3 242 107540 600.68 649 644 178.0
D 8 176 3890049 23187.57 585 558 167.7
D 2 165 170077 1010.6 585 558 167.7
D 12 2 115921 687.75 585 558 167.7

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