ASTROSAT CZTI

Data Quality Report

Orbit 17776

Creation date: 2024-06-27T17:40:45.251897
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/AS1A05_015T01_9000002650_17776cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17776cztM0_level2_quad_clean.evt
Size (bytes)498,024,00093,790,080
Size475.0 MB 89.4 MB
Events in quadrant A3,120,665612,876
Events in quadrant B3,229,163628,228
Events in quadrant C4,459,431575,067
Events in quadrant D3,821,506560,125

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136942
B0139113
C0175522
D0160412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6650120.180451%
B6649240.360957%
C66494807.219131%
D66492343.519326%

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 7885 6651 0 0 0.00% 0.00%
B 7884 6650 5 5 0.06% 0.08%
C 7884 6650 296 296 3.75% 4.45%
D 7884 6650 197 197 2.50% 2.96%

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 0 226 7153 39.02 810 795 162.9
A 12 194 5796 30.7 810 795 162.9
A 3 137 5709 30.16 810 795 162.9
B 0 230 24259 153.09 812 791 153.3
B 12 111 18040 112.52 812 791 153.3
B 11 111 15320 94.78 812 791 153.3
C 4 254 1346138 7673.81 751 756 175.3
C 14 238 118950 674.16 751 756 175.3
C 5 218 37535 209.78 751 756 175.3
D 7 238 844687 4650.6 759 741 181.5
D 2 234 31025 166.88 759 741 181.5
D 10 70 30156 162.09 759 741 181.5

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