ASTROSAT CZTI

Data Quality Report

Orbit 34667

Creation date: 2022-02-25T21:23:48.355429
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_065T06_9000004958_34667cztM0_level2.evt modeM0/AS1A11_065T06_9000004958_34667cztM0_level2_quad_clean.evt
Size (bytes)524,597,76050,909,760
Size500.3 MB 48.6 MB
Events in quadrant A2,756,338301,732
Events in quadrant B4,093,431306,188
Events in quadrant C3,122,147297,635
Events in quadrant D5,551,784259,124

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112033
B0154482
C0122422
D0203352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5371110.204804%
B53714027.484640%
C5371741.377770%
D53713506.516477%

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 7344 5372 5 5 0.07% 0.09%
B 7344 5372 269 269 3.66% 5.01%
C 7344 5371 53 53 0.72% 0.99%
D 7344 5371 278 278 3.79% 5.18%

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 46039 326.42 695 684 138.9
A 15 174 15035 103.28 695 684 138.9
A 13 254 9761 65.33 695 684 138.9
B 5 172 999045 7902.79 674 660 126.3
B 5 255 224589 1772.53 674 660 126.3
B 5 200 109920 864.86 674 660 126.3
C 15 214 231494 1514.5 664 671 152.4
C 0 10 217690 1423.92 664 671 152.4
C 14 67 67204 436.54 664 671 152.4
D 8 195 2011133 12845.89 647 629 156.5
D 12 235 414706 2645.7 647 629 156.5
D 12 233 215021 1369.83 647 629 156.5

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