ASTROSAT CZTI

Data Quality Report

Orbit 56144

Creation date: 2026-02-12T20:51:25.562625
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_083T03_9000006548_56144cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56144cztM0_level2_quad_clean.evt
Size (bytes)750,352,32082,347,840
Size715.6 MB 78.5 MB
Events in quadrant A9,569,356398,130
Events in quadrant B3,687,203686,301
Events in quadrant C4,149,140603,606
Events in quadrant D9,865,409351,346

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328381
B0155881
C0170241
D0338032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6509264040.559226%
B65092473.794746%
C65092563.933016%
D6509275642.341373%

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 7614 6509 2558 2558 33.60% 39.30%
B 7614 6509 77 77 1.01% 1.18%
C 7614 6510 238 238 3.13% 3.66%
D 7614 6509 2676 2676 35.15% 41.11%

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 12 115 5818681 40166.24 581 567 144.9
A 3 14 666924 4600.3 581 567 144.9
A 15 32 344479 2374.25 581 567 144.9
B 5 185 441518 2950.41 705 682 149.4
B 5 172 166400 1109.11 705 682 149.4
B 0 171 63188 418.34 705 682 149.4
C 9 38 987114 5303.08 681 676 186.0
C 1 16 138823 742.68 681 676 186.0
C 12 254 82218 438.37 681 676 186.0
D 2 62 5876074 38125.63 538 514 154.1
D 11 129 701484 4548.49 538 514 154.1
D 2 249 463175 3002.14 538 514 154.1

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