ASTROSAT CZTI

Data Quality Report

Orbit 51723

Creation date: 2025-04-22T12:01:26.303540
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/AS1A13_031T01_9000006462_51723cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51723cztM0_level2_quad_clean.evt
Size (bytes)532,342,080101,603,520
Size507.7 MB 96.9 MB
Events in quadrant A6,542,296607,073
Events in quadrant B3,571,691724,212
Events in quadrant C5,453,135631,776
Events in quadrant D3,582,809615,161

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244712
B0158932
C0211823
D0160822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A715576310.663871%
B71561091.523197%
C71555147.183788%
D7155881.229909%

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 8875 7157 636 636 7.17% 8.89%
B 8876 7157 43 43 0.48% 0.60%
C 8875 7157 451 451 5.08% 6.30%
D 8875 7157 70 70 0.79% 0.98%

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 4 175 1275792 7188.16 723 705 177.4
A 11 3 714684 4024.97 723 705 177.4
A 8 248 581364 3273.4 723 705 177.4
B 1 223 107863 664.9 753 726 161.1
B 9 223 92027 566.62 753 726 161.1
B 10 41 90946 559.91 753 726 161.1
C 9 38 1016694 5097.44 729 722 199.3
C 0 192 553197 2771.93 729 722 199.3
C 12 254 543414 2722.85 729 722 199.3
D 8 176 318192 1552.2 732 706 204.5
D 3 12 82239 398.62 732 706 204.5
D 2 249 57556 277.94 732 706 204.5

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