ASTROSAT CZTI

Data Quality Report

Orbit 36542

Creation date: 2024-06-27T21:28:11.207252
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_089T02_9000005216_36542cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36542cztM0_level2_quad_clean.evt
Size (bytes)531,371,52073,848,960
Size506.8 MB 70.4 MB
Events in quadrant A3,302,884475,048
Events in quadrant B3,739,848459,524
Events in quadrant C3,943,067447,503
Events in quadrant D4,699,491433,858

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135653
B0150262
C0154612
D0180662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6013140.232829%
B60132634.373857%
C60132874.772992%
D60133105.155496%

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 7326 6014 3 3 0.04% 0.05%
B 7326 6014 128 128 1.75% 2.13%
C 7326 6014 213 213 2.91% 3.54%
D 7326 6014 270 270 3.69% 4.49%

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 15 223 393255 2813.94 687 673 139.5
A 10 83 217393 1553.4 687 673 139.5
A 13 6 19991 138.47 687 673 139.5
B 5 255 322275 2475.4 669 652 129.9
B 0 219 319508 2454.1 669 652 129.9
B 0 189 223802 1717.49 669 652 129.9
C 0 10 577906 3788.28 649 653 152.4
C 10 49 370650 2428.14 649 653 152.4
C 15 214 251533 1646.42 649 653 152.4
D 12 235 821855 5100.62 652 635 161.0
D 13 249 493281 3059.84 652 635 161.0
D 2 250 261580 1620.74 652 635 161.0

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