ASTROSAT CZTI

Data Quality Report

Orbit 06861

Creation date: 2024-06-27T15:12:29.684345
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/AS1A02_005T01_9000000948_06861cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06861cztM0_level2_quad_clean.evt
Size (bytes)450,043,20072,950,400
Size429.2 MB 69.6 MB
Events in quadrant A3,175,130444,982
Events in quadrant B3,312,302451,397
Events in quadrant C3,235,106448,895
Events in quadrant D3,486,164431,031

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134002
B0138871
C0134841
D0143561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6197921.484589%
B61971151.855737%
C61971111.791189%
D61971181.904147%

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 7512 6198 5 5 0.07% 0.08%
B 7512 6198 10 10 0.13% 0.16%
C 7512 6198 13 13 0.17% 0.21%
D 7512 6198 20 20 0.27% 0.32%

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 13 251 73622 447.22 800 783 162.9
A 3 1 20717 122.39 800 783 162.9
A 0 226 7742 42.73 800 783 162.9
B 4 48 98868 650.55 804 787 150.8
B 0 228 37370 242.64 804 787 150.8
B 0 219 25681 165.11 804 787 150.8
C 9 247 97156 532.22 786 790 181.1
C 9 16 57131 311.17 786 790 181.1
C 12 4 10703 54.75 786 790 181.1
D 8 195 228771 1188.64 785 761 191.8
D 2 152 116890 605.39 785 761 191.8
D 2 16 69055 356.02 785 761 191.8

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