ASTROSAT CZTI

Data Quality Report

Orbit 55160

Creation date: 2025-12-08T16:12:48.663682
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_55160cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55160cztM0_level2_quad_clean.evt
Size (bytes)451,068,48099,694,080
Size430.2 MB 95.1 MB
Events in quadrant A5,059,304628,670
Events in quadrant B3,708,468698,624
Events in quadrant C3,860,509615,463
Events in quadrant D3,513,433578,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200543
B0164530
C0166860
D0157600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71403865.406162%
B71411141.596415%
C71411091.526397%
D71411151.610419%

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 7139 7139 393 393 5.50% 5.50%
B 7140 7140 98 98 1.37% 1.37%
C 7141 7141 123 123 1.72% 1.72%
D 7141 7141 22 22 0.31% 0.31%

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 78 1921302 10691.21 723 706 179.6
A 0 8 239869 1331.33 723 706 179.6
A 12 115 27986 151.86 723 706 179.6
B 2 249 715137 4617.04 723 697 154.7
B 5 185 55715 355.55 723 697 154.7
B 12 111 19316 120.32 723 697 154.7
C 13 3 664411 3426.71 706 698 193.7
C 1 16 136169 699.43 706 698 193.7
C 6 223 58580 298.84 706 698 193.7
D 2 172 262185 1317.18 704 675 198.5
D 11 129 149432 749.26 704 675 198.5
D 2 249 142701 715.36 704 675 198.5

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