ASTROSAT CZTI

Data Quality Report

Orbit 25291

Creation date: 2024-06-27T19:16:00.649916
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_022T01_9000003702_25291cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25291cztM0_level2_quad_clean.evt
Size (bytes)587,139,840113,682,240
Size559.9 MB 108.4 MB
Events in quadrant A3,641,233756,685
Events in quadrant B3,546,309762,709
Events in quadrant C3,688,481735,205
Events in quadrant D6,410,218679,498

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157130
B0153010
C0155940
D0241460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7306710.971804%
B7306781.067616%
C73061441.970983%
D730688112.058582%

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 7746 7307 11 11 0.14% 0.15%
B 7746 7307 1 1 0.01% 0.01%
C 7746 7307 5 5 0.06% 0.07%
D 7746 7307 636 636 8.21% 8.70%

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 6 16 181715 1019.41 885 866 177.4
A 0 31 20126 108.56 885 866 177.4
A 15 173 20004 107.88 885 866 177.4
B 0 229 50255 297.5 881 861 166.0
B 12 111 20115 115.97 881 861 166.0
B 11 111 17574 100.66 881 861 166.0
C 2 16 164823 816.44 858 863 200.8
C 14 238 136601 675.91 858 863 200.8
C 9 54 23600 113.22 858 863 200.8
D 1 52 2272784 11308.97 833 810 200.9
D 12 233 463754 2304.35 833 810 200.9
D 8 195 323011 1603.79 833 810 200.9

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