ASTROSAT CZTI

Data Quality Report

Orbit 55580

Creation date: 2026-01-05T22:53:00.404465
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_55580cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55580cztM0_level2_quad_clean.evt
Size (bytes)510,874,560100,284,480
Size487.2 MB 95.6 MB
Events in quadrant A6,167,518635,425
Events in quadrant B3,290,573713,563
Events in quadrant C3,615,561619,688
Events in quadrant D5,281,072568,352

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233792
B0151352
C0162222
D0208292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71595217.277553%
B7160781.089385%
C71601672.332402%
D71604956.913408%

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 7559 7161 435 435 5.75% 6.07%
B 7560 7162 12 12 0.16% 0.17%
C 7560 7162 100 100 1.32% 1.40%
D 7560 7162 375 375 4.96% 5.24%

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 32 1573715 8794.68 722 704 178.9
A 12 115 1559857 8717.2 722 704 178.9
A 0 8 126668 704.26 722 704 178.9
B 4 169 90181 576.87 728 702 155.1
B 10 247 88616 566.78 728 702 155.1
B 0 199 78783 503.39 728 702 155.1
C 9 38 500260 2546.13 715 705 196.2
C 12 252 82750 418.17 715 705 196.2
C 12 250 68751 346.81 715 705 196.2
D 15 125 1161062 5754.11 706 671 201.7
D 11 129 669619 3317.16 706 671 201.7
D 2 249 139218 687.02 706 671 201.7

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