ASTROSAT CZTI

Data Quality Report

Orbit 55335

Creation date: 2025-12-20T18:20:22.365286
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_009T01_9000006534_55335cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55335cztM0_level2_quad_clean.evt
Size (bytes)517,190,400126,046,080
Size493.2 MB 120.2 MB
Events in quadrant A4,433,380813,671
Events in quadrant B4,038,227871,226
Events in quadrant C5,033,696781,312
Events in quadrant D4,957,094740,399

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197890
B0187690
C0211810
D0209820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8787310.352794%
B8787480.546262%
C87881171.331361%
D8788820.933091%

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 8787 8787 12 12 0.14% 0.14%
B 8787 8787 16 16 0.18% 0.18%
C 8788 8788 63 63 0.72% 0.72%
D 8788 8788 65 65 0.74% 0.74%

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 337880 1465.57 932 907 229.9
A 3 78 233446 1011.36 932 907 229.9
A 3 14 73065 313.83 932 907 229.9
B 0 199 155142 773.15 927 893 199.5
B 10 247 140367 699.09 927 893 199.5
B 5 185 37785 184.91 927 893 199.5
C 9 38 1042455 4140.27 918 909 251.6
C 13 3 159766 631.48 918 909 251.6
C 12 252 70161 275.29 918 909 251.6
D 11 129 308054 1197.55 911 871 256.5
D 3 12 196559 762.89 911 871 256.5
D 7 96 188624 731.96 911 871 256.5

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