ASTROSAT CZTI

Data Quality Report

Orbit 59272

Creation date: 2026-09-11T07:13:49.934779
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/AS1T05_271T01_9000006604_59272cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59272cztM0_level2_quad_clean.evt
Size (bytes)678,576,960112,394,880
Size647.1 MB 107.2 MB
Events in quadrant A3,900,684768,302
Events in quadrant B4,120,528812,921
Events in quadrant C4,065,130747,054
Events in quadrant D12,421,044526,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173892
B0181353
C0176602
D0424002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7885891.128725%
B78853284.159797%
C78851001.268231%
D7885245031.071655%

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 8815 7887 11 11 0.12% 0.14%
B 8815 7887 115 115 1.30% 1.46%
C 8815 7887 25 25 0.28% 0.32%
D 8815 7887 1995 1995 22.63% 25.29%

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 15 233 218920 995.35 894 871 219.1
A 14 238 78894 356.16 894 871 219.1
A 3 14 78572 354.69 894 871 219.1
B 4 236 552904 2888.22 881 846 191.1
B 10 247 25797 130.54 881 846 191.1
B 0 157 24294 122.67 881 846 191.1
C 14 96 168738 689.8 886 880 243.3
C 3 233 149391 610.3 886 880 243.3
C 12 252 112889 460.29 886 880 243.3
D 12 110 8427127 36929.55 801 763 228.2
D 11 129 625292 2737.07 801 763 228.2
D 2 249 57684 249.46 801 763 228.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct