ASTROSAT CZTI

Data Quality Report

Orbit 34915

Creation date: 2022-03-14T06:19:21.871398
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/AS1A11_086T01_9000005002_34915cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34915cztM0_level2_quad_clean.evt
Size (bytes)450,803,52062,717,760
Size429.9 MB 59.8 MB
Events in quadrant A2,329,065405,429
Events in quadrant B3,584,452394,092
Events in quadrant C2,710,511408,973
Events in quadrant D4,696,971347,401

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100243
B0137412
C0108442
D0172212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489060.122699%
B48904408.997955%
C4890821.676892%
D489050110.245399%

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 7013 4891 0 0 0.00% 0.00%
B 7013 4891 373 373 5.32% 7.63%
C 7013 4891 75 75 1.07% 1.53%
D 7013 4891 521 521 7.43% 10.65%

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 58968 500.22 579 569 116.7
A 13 6 21174 176.49 579 569 116.7
A 13 254 8105 64.55 579 569 116.7
B 5 172 1294643 12264.81 558 545 105.5
B 4 171 38679 361.41 558 545 105.5
B 15 85 21483 198.44 558 545 105.5
C 0 10 258268 1964.12 568 573 131.2
C 15 214 206895 1572.56 568 573 131.2
C 8 79 27935 208.55 568 573 131.2
D 7 223 1249423 9643.27 533 519 129.5
D 8 195 838524 6470.56 533 519 129.5
D 13 249 314395 2423.56 533 519 129.5

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