ASTROSAT CZTI

Data Quality Report

Orbit 54681

Creation date: 2025-11-10T13:29:41.430028
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_066T07_9000006522_54681cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54681cztM0_level2_quad_clean.evt
Size (bytes)726,266,880116,104,320
Size692.6 MB 110.7 MB
Events in quadrant A3,966,901816,820
Events in quadrant B4,206,527867,733
Events in quadrant C5,355,965742,857
Events in quadrant D12,686,424489,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183020
B0189460
C0223840
D0437120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8615130.150900%
B8615901.044689%
C86153834.445734%
D8614300434.873462%

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 8615 8615 10 10 0.12% 0.12%
B 8615 8615 50 50 0.58% 0.58%
C 8615 8615 355 355 4.12% 4.12%
D 8614 8614 2718 2718 31.55% 31.55%

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 11 3 197942 850.91 931 906 231.6
A 8 6 90865 388.49 931 906 231.6
A 0 8 23040 95.59 931 906 231.6
B 2 249 335147 1656.27 923 889 201.8
B 10 247 96956 476.02 923 889 201.8
B 0 213 92557 454.22 923 889 201.8
C 4 5 1090873 4480.77 887 880 243.3
C 14 254 176605 722.37 887 880 243.3
C 13 3 174518 713.8 887 880 243.3
D 11 129 6887303 34007.78 704 673 202.5
D 11 176 942732 4652.11 704 673 202.5
D 2 62 663862 3274.98 704 673 202.5

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