ASTROSAT CZTI

Data Quality Report

Orbit 53639

Creation date: 2025-08-28T09:28:55.689420
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_022T05_9000006504_53639cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53639cztM0_level2_quad_clean.evt
Size (bytes)2,675,410,560207,192,960
Size2.5 GB 197.6 MB
Events in quadrant A20,269,7641,402,817
Events in quadrant B25,359,8041,290,403
Events in quadrant C32,017,148931,921
Events in quadrant D19,931,9031,340,998

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0732773
B0884104
C01079833
D0725413

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18948381820.149884%
B18947622732.865361%
C18947893547.157861%
D18947299515.807252%

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 20590 18963 3349 3349 16.27% 17.66%
B 20589 18963 4336 4336 21.06% 22.87%
C 20589 18951 7853 7853 38.14% 41.44%
D 20589 18963 2703 2703 13.13% 14.25%

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 3 78 9598457 20741.76 1858 1812 462.7
A 10 253 843302 1818.76 1858 1812 462.7
A 0 8 822372 1773.52 1858 1812 462.7
B 15 20 6439023 17511.75 1728 1664 367.6
B 4 206 4060518 11041.43 1728 1664 367.6
B 10 28 2715289 7381.96 1728 1664 367.6
C 1 241 13312345 33668.56 1436 1426 395.4
C 15 224 6509653 16461.87 1436 1426 395.4
C 15 147 2014416 5091.64 1436 1426 395.4
D 8 176 7648995 14523.89 1839 1759 526.5
D 10 172 1390479 2637.5 1839 1759 526.5
D 7 70 638772 1209.84 1839 1759 526.5

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