ASTROSAT CZTI

Data Quality Report

Orbit 26390

Creation date: 2024-06-27T19:28:28.520537
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_9000003814_26390cztM0_level2.evt modeM0/AS1A09_044T02_9000003814_26390cztM0_level2_quad_clean.evt
Size (bytes)513,826,56087,819,840
Size490.0 MB 83.8 MB
Events in quadrant A3,539,554559,333
Events in quadrant B3,458,786576,569
Events in quadrant C3,832,506535,914
Events in quadrant D4,275,105519,760

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147140
B0143420
C0155040
D0172720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6713891.325786%
B6713570.849099%
C67121412.100715%
D67121452.160310%

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 7633 6714 42 42 0.55% 0.63%
B 7633 6714 0 0 0.00% 0.00%
C 7632 6713 21 21 0.28% 0.31%
D 7632 6713 101 101 1.32% 1.50%

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 282640 1653.01 844 829 170.5
A 13 254 11589 63.11 844 829 170.5
A 3 137 7799 40.88 844 829 170.5
B 0 244 111991 685.76 848 826 162.1
B 0 230 32990 198.41 848 826 162.1
B 12 111 19453 114.91 848 826 162.1
C 3 233 525722 2778.9 806 813 188.9
C 14 238 129012 678.69 806 813 188.9
C 2 16 35628 184.31 806 813 188.9
D 1 52 902213 4660.24 805 788 193.4
D 7 80 247175 1273.79 805 788 193.4
D 12 233 35643 180.2 805 788 193.4

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