ASTROSAT CZTI

Data Quality Report

Orbit 21165

Creation date: 2024-06-27T18:24:22.727517
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/AS1C04_001T01_9000003126_21165cztM0_level2.evt modeM0/AS1C04_001T01_9000003126_21165cztM0_level2_quad_clean.evt
Size (bytes)550,584,000137,741,760
Size525.1 MB 131.4 MB
Events in quadrant A4,185,417912,812
Events in quadrant B3,603,374943,906
Events in quadrant C3,415,079919,473
Events in quadrant D4,970,886882,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175482
B0156212
C0151342
D0198972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73662423.285365%
B7366841.140375%
C7366891.208254%
D73661772.402932%

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 7911 7367 131 131 1.66% 1.78%
B 7911 7367 5 5 0.06% 0.07%
C 7911 7367 0 0 0.00% 0.00%
D 7911 7367 105 105 1.33% 1.43%

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 5 16 904684 5334.87 843 825 169.4
A 15 192 14628 81.47 843 825 169.4
A 13 254 11130 60.82 843 825 169.4
B 3 64 59234 365.54 860 838 159.8
B 0 229 47389 291.4 860 838 159.8
B 0 244 23895 144.33 860 838 159.8
C 14 238 130318 667.89 829 833 193.9
C 3 233 39537 199.64 829 833 193.9
C 0 10 8540 39.75 829 833 193.9
D 1 20 554802 2777.29 826 802 199.5
D 1 52 369388 1847.78 826 802 199.5
D 13 174 304706 1523.52 826 802 199.5

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