ASTROSAT CZTI

Data Quality Report

Orbit 26759

Creation date: 2024-06-27T19:32:31.844315
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_044T02_9000003852_26759cztM0_level2.evt modeM0/AS1A09_044T02_9000003852_26759cztM0_level2_quad_clean.evt
Size (bytes)684,014,40076,092,480
Size652.3 MB 72.6 MB
Events in quadrant A3,500,876498,656
Events in quadrant B6,486,955431,019
Events in quadrant C3,418,625475,885
Events in quadrant D6,848,792423,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146000
B0236440
C0143100
D0249680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6801190.279371%
B6801113516.688722%
C6801670.985149%
D680192413.586237%

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 7861 6802 0 0 0.00% 0.00%
B 7861 6802 906 906 11.53% 13.32%
C 7861 6802 11 11 0.14% 0.16%
D 7861 6802 749 749 9.53% 11.01%

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 218805 1278.59 847 832 170.5
A 13 254 10855 58.79 847 832 170.5
A 12 96 9800 52.6 847 832 170.5
B 0 189 3326190 22430.97 781 763 148.3
B 10 246 64633 430.82 781 763 148.3
B 3 112 30302 199.25 781 763 148.3
C 14 238 129816 679.75 806 810 189.8
C 2 16 108399 566.9 806 810 189.8
C 15 208 30972 158.93 806 810 189.8
D 7 80 3012199 14928.65 771 752 201.7
D 1 52 739796 3663.66 771 752 201.7
D 2 250 86797 426.55 771 752 201.7

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