ASTROSAT CZTI

Data Quality Report

Orbit 58977

Creation date: 2026-08-22T10:23:04.962556
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_004T07_9000006598_58977cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58977cztM0_level2_quad_clean.evt
Size (bytes)625,420,80095,195,520
Size596.4 MB 90.8 MB
Events in quadrant A5,524,942631,534
Events in quadrant B4,887,166690,071
Events in quadrant C3,254,500635,788
Events in quadrant D8,981,664471,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208952
B0189166
C0142592
D0312202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64934496.915139%
B64924426.808380%
C64921131.740604%
D6492149523.028343%

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 7703 6494 296 296 3.84% 4.56%
B 7702 6493 250 250 3.25% 3.85%
C 7702 6493 69 69 0.90% 1.06%
D 7702 6493 1538 1538 19.97% 23.69%

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 14 238 1409463 7881.78 728 710 178.7
A 3 14 1087042 6077.88 728 710 178.7
A 15 233 94459 524.51 728 710 178.7
B 2 249 565227 3670.63 725 698 153.8
B 6 255 427972 2778.19 725 698 153.8
B 2 247 254710 1651.62 725 698 153.8
C 12 2 171375 867.6 718 712 196.7
C 12 252 118649 599.55 718 712 196.7
C 2 255 56929 285.79 718 712 196.7
D 12 110 5438060 28487.5 665 634 190.9
D 12 1 356335 1863.57 665 634 190.9
D 6 239 158530 827.24 665 634 190.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct