ASTROSAT CZTI

Data Quality Report

Orbit 53204

Creation date: 2025-07-30T00:51:06.078508
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_9000006490_53204cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53204cztM0_level2_quad_clean.evt
Size (bytes)804,781,44075,960,000
Size767.5 MB 72.4 MB
Events in quadrant A3,649,593616,251
Events in quadrant B3,128,970654,867
Events in quadrant C7,073,052432,281
Events in quadrant D15,434,441142,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156391
B0140513
C0256631
D0503641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65021742.676100%
B6502701.076592%
C6502172426.514918%
D6502514079.052599%

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 7367 6503 118 118 1.60% 1.81%
B 7367 6503 14 14 0.19% 0.22%
C 7367 6503 1340 1340 18.19% 20.61%
D 7367 6503 5355 5355 72.69% 82.35%

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 370670 2178.53 677 657 169.8
A 4 249 172128 1009.57 677 657 169.8
A 3 62 119975 702.51 677 657 169.8
B 10 247 107753 744.56 672 648 143.9
B 0 213 93408 644.84 672 648 143.9
B 5 185 69974 481.93 672 648 143.9
C 15 165 3023917 20982.79 519 513 144.1
C 15 224 1396521 9688.46 519 513 144.1
C 0 240 237355 1643.71 519 513 144.1
D 15 125 12412314 103750.41 409 389 119.6
D 2 62 370115 3090.51 409 389 119.6
D 8 176 333366 2783.33 409 389 119.6

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