ASTROSAT CZTI

Data Quality Report

Orbit 57928

Creation date: 2026-06-12T20:14:20.874101
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_125T11_9000006582_57928cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57928cztM0_level2_quad_clean.evt
Size (bytes)444,147,84097,992,000
Size423.6 MB 93.5 MB
Events in quadrant A2,888,558655,971
Events in quadrant B4,720,164651,251
Events in quadrant C3,761,678622,623
Events in quadrant D4,561,054580,114

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133881
B0184922
C0158071
D0181941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6552530.808913%
B65515247.998779%
C65511191.816517%
D65513014.594718%

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 7491 6551 0 0 0.00% 0.00%
B 7491 6551 398 398 5.31% 6.08%
C 7490 6550 93 93 1.24% 1.42%
D 7491 6551 316 316 4.22% 4.82%

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 7 64 66568 371.78 717 700 177.2
A 3 14 26291 144.45 717 700 177.2
A 3 245 13290 71.06 717 700 177.2
B 3 238 1677486 11454.53 683 656 146.4
B 4 142 51929 350.25 683 656 146.4
B 6 51 49533 333.88 683 656 146.4
C 15 224 704677 3708.49 686 678 189.8
C 14 254 175152 919.09 686 678 189.8
C 2 12 75779 395.61 686 678 189.8
D 2 62 710649 3614.07 687 656 196.5
D 12 110 659232 3352.34 687 656 196.5
D 2 31 152831 774.62 687 656 196.5

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