ASTROSAT CZTI

Data Quality Report

Orbit 36555

Creation date: 2024-06-27T21:28:21.610953
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_049T02_9000005220_36555cztM0_level2.evt modeM0/AS1A11_049T02_9000005220_36555cztM0_level2_quad_clean.evt
Size (bytes)525,306,24070,706,880
Size501.0 MB 67.4 MB
Events in quadrant A4,372,560432,970
Events in quadrant B3,227,135446,960
Events in quadrant C3,223,587434,950
Events in quadrant D4,694,717422,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166913
B0133372
C0132372
D0180342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57764097.081025%
B57761001.731302%
C57761362.354571%
D57761843.185596%

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 7149 5777 278 278 3.89% 4.81%
B 7149 5777 61 61 0.85% 1.06%
C 7149 5777 102 102 1.43% 1.77%
D 7149 5777 135 135 1.89% 2.34%

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 1562660 11993.59 641 629 130.2
A 10 83 216586 1658.16 641 629 130.2
A 13 248 66941 509.16 641 629 130.2
B 5 172 214296 1694.09 652 635 126.1
B 5 255 173927 1374.01 652 635 126.1
B 0 219 129520 1021.91 652 635 126.1
C 0 10 358355 2428.02 628 632 147.3
C 15 214 243993 1651.79 628 632 147.3
C 14 254 128019 864.63 628 632 147.3
D 12 235 1393853 9002.51 630 611 154.8
D 2 250 235785 1519.59 630 611 154.8
D 13 171 150331 967.42 630 611 154.8

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