ASTROSAT CZTI

Data Quality Report

Orbit 17155

Creation date: 2024-06-27T17:32:55.004082
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/AS1T03_059T01_9000002546_17155cztM0_level2.evt modeM0/AS1T03_059T01_9000002546_17155cztM0_level2_quad_clean.evt
Size (bytes)562,345,92096,762,240
Size536.3 MB 92.3 MB
Events in quadrant A3,606,768631,183
Events in quadrant B3,598,891644,930
Events in quadrant C4,979,329577,579
Events in quadrant D4,340,940558,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154602
B0153992
C0196682
D0180372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7437620.833669%
B7438991.331003%
C74385136.897015%
D74386028.093574%

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 9287 7439 1 1 0.01% 0.01%
B 9288 7439 0 0 0.00% 0.00%
C 9288 7440 185 185 1.99% 2.49%
D 9288 7440 135 135 1.45% 1.81%

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 74702 398.3 917 898 185.3
A 0 226 7959 38.11 917 898 185.3
A 3 137 6860 32.18 917 898 185.3
B 12 111 21885 118.1 921 899 177.7
B 11 111 18654 99.92 921 899 177.7
B 14 111 15948 84.69 921 899 177.7
C 4 254 778536 3826.3 865 869 203.2
C 3 233 695251 3416.52 865 869 203.2
C 14 238 131199 641.25 865 869 203.2
D 1 52 988601 4770.14 857 834 207.1
D 13 232 38041 179.68 857 834 207.1
D 10 70 32900 154.85 857 834 207.1

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