ASTROSAT CZTI

Data Quality Report

Orbit 45937

Creation date: 2024-06-27T23:17:55.110071
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/AS1A13_033T03_9000006144_45937cztM0_level2.fits modeM0/AS1A13_033T03_9000006144_45937cztM0_level2_quad_clean.evt
Size (bytes)531,077,760107,953,920
Size506.5 MB 103.0 MB
Events in quadrant A5,705,658727,545
Events in quadrant B5,531,404724,164
Events in quadrant C3,042,087743,239
Events in quadrant D4,882,182626,222

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214292
B0208952
C0135502
D0190742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64172213.443977%
B64175428.446314%
C6417430.670095%
D64175648.789154%

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 7577 6417 46 46 0.61% 0.72%
B 7577 6417 268 268 3.54% 4.18%
C 7577 6417 12 12 0.16% 0.19%
D 7577 6417 486 486 6.41% 7.57%

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 2827713 18398.79 738 722 153.7
A 0 247 26587 168.34 738 722 153.7
A 3 137 8402 49.98 738 722 153.7
B 3 112 2601727 18132.43 729 707 143.4
B 5 172 22973 155.22 729 707 143.4
B 12 111 17646 118.09 729 707 143.4
C 14 254 131264 753.75 736 741 173.2
C 12 2 16063 88.48 736 741 173.2
C 12 249 8244 43.33 736 741 173.2
D 2 37 1280012 7285.09 695 675 175.6
D 11 241 279009 1584.95 695 675 175.6
D 1 47 159228 902.87 695 675 175.6

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