ASTROSAT CZTI

Data Quality Report

Orbit 35731

Creation date: 2022-05-10T15:43:43.677048
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/AS1A09_029T05_9000005124_35731cztM0_level2.evt modeM0/AS1A09_029T05_9000005124_35731cztM0_level2_quad_clean.evt
Size (bytes)439,966,08071,591,040
Size419.6 MB 68.3 MB
Events in quadrant A2,976,397437,053
Events in quadrant B3,295,595440,059
Events in quadrant C3,221,473432,252
Events in quadrant D3,399,845415,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129143
B0139762
C0133762
D0144462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633870.110445%
B6338761.199116%
C6338570.899337%
D6338791.246450%

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 8993 6340 0 0 0.00% 0.00%
B 8993 6340 52 52 0.58% 0.82%
C 8993 6339 47 47 0.52% 0.74%
D 8993 6340 77 77 0.86% 1.21%

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 10 83 162502 1108.26 720 705 146.0
A 13 6 19854 131.16 720 705 146.0
A 3 137 7667 47.69 720 705 146.0
B 5 172 259464 1878.02 711 691 137.8
B 4 81 181881 1314.97 711 691 137.8
B 5 255 33782 240.16 711 691 137.8
C 15 214 265859 1642.87 693 698 161.4
C 0 10 177569 1095.85 693 698 161.4
C 1 23 49054 299.6 693 698 161.4
D 13 249 226108 1327.56 694 673 169.8
D 14 52 200171 1174.82 694 673 169.8
D 1 52 79196 462.41 694 673 169.8

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