ASTROSAT CZTI

Data Quality Report

Orbit 55592

Creation date: 2026-01-06T17:32:24.272274
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_021T06_9000006538_55592cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55592cztM0_level2_quad_clean.evt
Size (bytes)394,482,24084,985,920
Size376.2 MB 81.0 MB
Events in quadrant A3,254,026569,347
Events in quadrant B2,544,589612,764
Events in quadrant C5,257,216475,842
Events in quadrant D3,085,703501,884

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140811
B0122371
C0200181
D0132761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5920931.570946%
B5919851.436053%
C592079713.462838%
D5920931.570946%

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 7005 5921 26 26 0.37% 0.44%
B 7004 5920 4 4 0.06% 0.07%
C 7005 5921 721 721 10.29% 12.18%
D 7005 5921 43 43 0.61% 0.73%

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 8 249 608199 3929.23 615 599 154.6
A 0 8 127269 819.15 615 599 154.6
A 12 115 72408 464.37 615 599 154.6
B 1 159 55962 425.9 606 586 130.0
B 10 247 37628 284.89 606 586 130.0
B 12 111 15131 111.87 606 586 130.0
C 12 252 2697945 17535.67 558 550 153.8
C 6 223 284563 1846.36 558 550 153.8
C 13 3 45221 290.4 558 550 153.8
D 8 160 247986 1477.72 590 562 167.4
D 5 113 227794 1357.13 590 562 167.4
D 2 172 85541 507.53 590 562 167.4

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