ASTROSAT CZTI

Data Quality Report

Orbit 58539

Creation date: 2026-07-24T12:42:05.544471
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_044T04_9000006592_58539cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58539cztM0_level2_quad_clean.evt
Size (bytes)442,051,20097,027,200
Size421.6 MB 92.5 MB
Events in quadrant A3,744,770633,465
Events in quadrant B4,287,696676,364
Events in quadrant C3,734,050601,182
Events in quadrant D4,088,169570,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155362
B0172602
C0158353
D0166972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65411752.675432%
B65422573.928462%
C65412353.592723%
D65412043.118789%

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 7566 6542 91 91 1.20% 1.39%
B 7567 6543 129 129 1.70% 1.97%
C 7566 6542 176 176 2.33% 2.69%
D 7566 6542 157 157 2.08% 2.40%

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 10 17 183895 1016.29 727 709 180.2
A 3 14 174916 966.48 727 709 180.2
A 4 249 143138 790.18 727 709 180.2
B 0 186 532272 3437.46 720 696 154.6
B 0 171 335097 2162.42 720 696 154.6
B 8 234 136367 877.32 720 696 154.6
C 4 5 610145 3139.05 704 699 194.1
C 12 252 103771 530.89 704 699 194.1
C 1 12 89285 456.28 704 699 194.1
D 8 240 301512 1488.52 705 672 202.1
D 2 153 195281 962.9 705 672 202.1
D 11 176 178385 879.3 705 672 202.1

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