ASTROSAT CZTI

Data Quality Report

Orbit 56546

Creation date: 2026-03-11T22:46:43.235074
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_060T01_9000006556_56546cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56546cztM0_level2_quad_clean.evt
Size (bytes)501,618,24094,239,360
Size478.4 MB 89.9 MB
Events in quadrant A4,054,592623,430
Events in quadrant B4,498,374655,887
Events in quadrant C4,938,774573,164
Events in quadrant D4,563,234540,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166541
B0180761
C0193771
D0183371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66061462.210112%
B66073114.707129%
C66074967.507189%
D66074166.296352%

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 7551 6607 107 107 1.42% 1.62%
B 7552 6608 146 146 1.93% 2.21%
C 7552 6608 489 489 6.48% 7.40%
D 7552 6608 331 331 4.38% 5.01%

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 4 95 484226 2709.81 717 699 178.4
A 4 249 276509 1545.71 717 699 178.4
A 0 8 180649 1008.49 717 699 178.4
B 5 185 880544 5813.14 705 679 151.4
B 0 213 181450 1194.33 705 679 151.4
B 4 206 139345 916.15 705 679 151.4
C 15 230 1012572 5416.35 679 674 186.8
C 13 3 788991 4219.6 679 674 186.8
C 12 252 191792 1022.99 679 674 186.8
D 2 31 772136 3976.82 678 648 194.0
D 2 120 423698 2180.71 678 648 194.0
D 2 249 411168 2116.13 678 648 194.0

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