ASTROSAT CZTI

Data Quality Report

Orbit 12663

Creation date: 2024-06-27T16:30:43.469777
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/AS1A04_174T01_9000001876_12663cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12663cztM0_level2_quad_clean.evt
Size (bytes)491,103,360103,766,400
Size468.4 MB 99.0 MB
Events in quadrant A3,024,933716,621
Events in quadrant B5,377,904636,775
Events in quadrant C3,121,704695,993
Events in quadrant D2,942,554675,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127432
B0198891
C0131061
D0126741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5978801.338240%
B597890615.155570%
C5978921.538976%
D5978570.953496%

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 7189 5979 0 0 0.00% 0.00%
B 7188 5978 708 708 9.85% 11.84%
C 7189 5979 46 46 0.64% 0.77%
D 7189 5979 1 1 0.01% 0.02%

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 12 189 40441 251.37 773 759 157.9
A 8 15 10575 62.18 773 759 157.9
A 0 226 6967 39.32 773 759 157.9
B 4 239 1921716 14407.16 709 696 133.3
B 4 206 393930 2949.15 709 696 133.3
B 11 51 137055 1022.65 709 696 133.3
C 15 208 238952 1400.29 737 744 170.1
C 14 234 6295 32.63 737 744 170.1
C 13 61 5309 26.83 737 744 170.1
D 2 234 22365 111.67 740 728 193.8
D 10 199 21420 106.79 740 728 193.8
D 10 157 20478 101.93 740 728 193.8

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