ASTROSAT CZTI

Data Quality Report

Orbit 11212

Creation date: 2024-06-27T16:09:49.834938
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/AS1G08_075T01_9000001636_11212cztM0_level2.evt modeM0/AS1G08_075T01_9000001636_11212cztM0_level2_quad_clean.evt
Size (bytes)475,277,76074,954,880
Size453.3 MB 71.5 MB
Events in quadrant A4,569,094460,874
Events in quadrant B3,179,188471,963
Events in quadrant C2,595,552475,603
Events in quadrant D3,648,041447,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018091368
B013706246
C012153144
D015103154

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01242
B01244
C01244
D01242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59032033.438929%
B59151332.248521%
C5929130.219261%
D59282243.778677%

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 6943 5933 86 86 1.24% 1.45%
B 6944 5946 73 73 1.05% 1.23%
C 6942 5954 0 0 0.00% 0.00%
D 6950 5957 158 158 2.27% 2.65%

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 8 5 696533 5090.84 665 649 136.7
A 15 174 526731 3848.63 665 649 136.7
A 8 15 517115 3778.28 665 649 136.7
B 4 239 428905 3329.44 673 656 128.6
B 15 204 99972 772.14 673 656 128.6
B 12 111 14033 104.0 673 656 128.6
C 13 61 5098 28.62 664 667 154.8
C 14 234 3584 18.84 664 667 154.8
C 12 4 3336 17.24 664 667 154.8
D 14 34 356368 2279.36 648 629 156.1
D 13 152 156384 997.98 648 629 156.1
D 2 14 149757 955.52 648 629 156.1

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