ASTROSAT CZTI

Data Quality Report

Orbit 56100

Creation date: 2026-02-09T21:46:54.548851
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_083T03_9000006548_56100cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56100cztM0_level2_quad_clean.evt
Size (bytes)452,194,56091,025,280
Size431.2 MB 86.8 MB
Events in quadrant A5,400,991538,833
Events in quadrant B3,316,398662,960
Events in quadrant C4,096,484574,822
Events in quadrant D3,437,568542,188

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205203
B0141461
C0166911
D0147821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626296115.346535%
B62621231.964229%
C62632493.975730%
D62631923.065624%

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 7402 6262 756 756 10.21% 12.07%
B 7402 6263 38 38 0.51% 0.61%
C 7403 6264 178 178 2.40% 2.84%
D 7403 6264 145 145 1.96% 2.31%

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 12 115 1602565 10061.79 637 620 159.2
A 15 32 746595 4685.46 637 620 159.2
A 3 14 444179 2785.99 637 620 159.2
B 4 21 117891 826.57 672 648 141.8
B 7 252 117672 825.03 672 648 141.8
B 5 185 98258 688.16 672 648 141.8
C 12 254 1111391 6273.52 641 634 177.1
C 12 252 225739 1271.39 641 634 177.1
C 9 38 139004 781.51 641 634 177.1
D 8 129 331992 1773.7 648 616 186.8
D 8 240 232146 1239.27 648 616 186.8
D 14 52 97471 518.42 648 616 186.8

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