ASTROSAT CZTI

Data Quality Report

Orbit 56734

Creation date: 2026-03-24T16:49:50.995761
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_083T05_9000006560_56734cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56734cztM0_level2_quad_clean.evt
Size (bytes)1,244,234,880218,862,720
Size1.2 GB 208.7 MB
Events in quadrant A11,772,5301,394,775
Events in quadrant B8,908,8721,589,327
Events in quadrant C15,795,6811,155,874
Events in quadrant D8,317,0491,361,267

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0464633
B0380373
C0584833
D0360733

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1630615449.468907%
B163065863.593769%
C16307350721.506102%
D163072701.655731%

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 17896 16306 1314 1314 7.34% 8.06%
B 17896 16306 265 265 1.48% 1.63%
C 17897 16307 3015 3015 16.85% 18.49%
D 17897 16307 105 105 0.59% 0.64%

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 62 3319093 7860.63 1709 1666 422.0
A 10 251 878991 2078.82 1709 1666 422.0
A 4 249 477420 1127.3 1709 1666 422.0
B 5 185 910840 2431.35 1737 1673 373.9
B 8 128 720330 1921.88 1737 1673 373.9
B 10 16 153057 404.84 1737 1673 373.9
C 15 230 8669584 20852.72 1533 1522 415.7
C 6 223 151510 360.83 1533 1522 415.7
C 15 199 134948 320.98 1533 1522 415.7
D 2 249 786420 1619.32 1723 1647 484.6
D 2 31 159687 326.1 1723 1647 484.6
D 5 173 144980 295.76 1723 1647 484.6

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