ASTROSAT CZTI

Data Quality Report

Orbit 55233

Creation date: 2025-12-14T11:50:21.866637
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_009T01_9000006534_55233cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55233cztM0_level2_quad_clean.evt
Size (bytes)587,134,080114,791,040
Size559.9 MB 109.5 MB
Events in quadrant A3,804,894757,422
Events in quadrant B3,793,148817,883
Events in quadrant C7,648,106641,920
Events in quadrant D5,843,115681,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177690
B0177310
C0283700
D0231310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8299810.976021%
B83001351.626506%
C8300129115.554217%
D83003063.686747%

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 8299 8299 58 58 0.70% 0.70%
B 8300 8300 28 28 0.34% 0.34%
C 8300 8300 1014 1014 12.22% 12.22%
D 8300 8300 273 273 3.29% 3.29%

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 0 8 239915 1102.22 883 857 216.9
A 4 3 29299 131.14 883 857 216.9
A 4 205 25610 114.13 883 857 216.9
B 10 247 160805 840.8 880 844 190.2
B 4 81 66695 346.13 880 844 190.2
B 10 245 41480 213.59 880 844 190.2
C 12 254 2906765 13157.83 807 797 220.9
C 13 3 462742 2091.62 807 797 220.9
C 10 22 411701 1860.52 807 797 220.9
D 11 129 1719078 7160.76 853 817 240.0
D 2 249 397830 1654.53 853 817 240.0
D 10 181 148656 616.11 853 817 240.0

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