ASTROSAT CZTI

Data Quality Report

Orbit 36309

Creation date: 2022-06-16T09:33:29.975725
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_9000005188_36309cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36309cztM0_level2_quad_clean.evt
Size (bytes)544,161,60060,459,840
Size519.0 MB 57.7 MB
Events in quadrant A2,855,507377,373
Events in quadrant B4,850,350343,002
Events in quadrant C3,011,592365,655
Events in quadrant D5,360,347329,346

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122363
B0184332
C0126002
D0200952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594570.117746%
B594564010.765349%
C5945621.042893%
D59455809.756098%

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 8871 5947 0 0 0.00% 0.00%
B 8871 5947 519 519 5.85% 8.73%
C 8871 5947 53 53 0.60% 0.89%
D 8871 5945 574 574 6.47% 9.66%

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 192786 1413.7 675 663 135.9
A 9 143 17377 122.99 675 663 135.9
A 13 6 13777 96.5 675 663 135.9
B 5 172 1523577 12390.46 637 619 122.9
B 4 171 361593 2936.81 637 619 122.9
B 5 236 252371 2048.2 637 619 122.9
C 15 214 251321 1651.64 646 649 151.8
C 0 10 217057 1425.88 646 649 151.8
C 0 207 14391 90.54 646 649 151.8
D 12 235 821141 5326.94 626 608 154.0
D 12 227 660276 4282.6 626 608 154.0
D 12 6 644910 4182.84 626 608 154.0

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