ASTROSAT CZTI

Data Quality Report

Orbit 26768

Creation date: 2024-06-27T19:32:44.731426
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/AS1A09_145T01_9000003854_26768cztM0_level2.fits modeM0/AS1A09_145T01_9000003854_26768cztM0_level2_quad_clean.evt
Size (bytes)702,072,00086,837,760
Size669.5 MB 82.8 MB
Events in quadrant A4,621,012551,010
Events in quadrant B7,126,723557,342
Events in quadrant C3,798,387536,537
Events in quadrant D9,863,633464,680

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183241
B0257631
C0156441
D0345221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D0-1-1

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74662593.469060%
B7467123916.593009%
C74671682.249900%
D7466196426.305920%

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 7756 7467 109 109 1.41% 1.46%
B 7757 7468 984 984 12.69% 13.18%
C 7757 7468 0 0 0.00% 0.00%
D 7755 7466 1499 1499 19.33% 20.08%

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 13 471767 2439.41 955 937 193.0
A 12 96 439967 2274.65 955 937 193.0
A 13 34 20252 100.07 955 937 193.0
B 0 189 3652073 21371.82 879 858 170.8
B 12 111 20459 114.73 879 858 170.8
B 11 111 18163 101.29 879 858 170.8
C 14 238 146285 673.3 916 923 215.9
C 2 16 32560 146.54 916 923 215.9
C 15 208 24479 109.11 916 923 215.9
D 7 80 5512838 27560.55 826 809 200.0
D 1 52 740905 3700.53 826 809 200.0
D 2 250 271602 1353.98 826 809 200.0

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