ASTROSAT CZTI

Data Quality Report

Orbit 55248

Creation date: 2025-12-14T14:24:48.347023
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_55248cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55248cztM0_level2_quad_clean.evt
Size (bytes)603,771,840113,875,200
Size575.8 MB 108.6 MB
Events in quadrant A3,822,516745,783
Events in quadrant B3,854,947803,136
Events in quadrant C8,265,479653,928
Events in quadrant D5,768,768673,345

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176910
B0179050
C0302111
D0225950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8222610.741912%
B82231451.763347%
C8222104512.709803%
D82222412.931160%

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 8222 8222 53 53 0.64% 0.64%
B 8223 8223 56 56 0.68% 0.68%
C 8222 8222 871 871 10.59% 10.59%
D 8222 8222 221 221 2.69% 2.69%

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 0 8 208447 990.4 861 840 209.6
A 3 62 87818 414.93 861 840 209.6
A 8 6 50587 237.32 861 840 209.6
B 2 249 335926 1813.0 857 824 184.8
B 5 185 63165 337.28 857 824 184.8
B 10 247 28425 149.33 857 824 184.8
C 12 254 3067077 14098.18 799 793 217.5
C 1 16 540870 2483.17 799 793 217.5
C 9 38 470611 2160.13 799 793 217.5
D 5 38 1027818 4421.44 829 797 232.3
D 2 31 452864 1946.2 829 797 232.3
D 2 249 405984 1744.38 829 797 232.3

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