ASTROSAT CZTI

Data Quality Report

Orbit 30402

Creation date: 2024-06-27T20:14:47.343715
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/AS1T04_002T01_9000004374_30402cztM0_level2.evt modeM0/AS1T04_002T01_9000004374_30402cztM0_level2_quad_clean.evt
Size (bytes)581,495,040114,102,720
Size554.6 MB 108.8 MB
Events in quadrant A3,450,694746,065
Events in quadrant B5,830,911745,776
Events in quadrant C3,635,128731,706
Events in quadrant D4,188,479713,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153532
B0229241
C0158501
D0178861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7454720.965924%
B74551912.562039%
C74551512.025486%
D74551952.615694%

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 7619 7456 0 0 0.00% 0.00%
B 7620 7455 1 1 0.01% 0.01%
C 7620 7457 1 1 0.01% 0.01%
D 7620 7457 115 115 1.51% 1.54%

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 8 192 16726 88.54 888 869 179.1
A 13 254 14996 78.88 888 869 179.1
A 3 137 9099 45.95 888 869 179.1
B 6 159 2116882 12497.45 881 858 169.3
B 0 229 230589 1356.81 881 858 169.3
B 12 111 21027 119.12 881 858 169.3
C 14 238 147185 731.77 854 859 200.0
C 3 233 119665 594.15 854 859 200.0
C 2 114 17132 81.38 854 859 200.0
D 13 249 248889 1212.87 851 825 204.5
D 2 250 234843 1144.2 851 825 204.5
D 13 104 221926 1081.04 851 825 204.5

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