ASTROSAT CZTI

Data Quality Report

Orbit 50183

Creation date: 2025-01-07T14:41:23.189002
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/AS1C09_003T01_9000006442_50183cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50183cztM0_level2_quad_clean.evt
Size (bytes)1,029,533,76072,561,600
Size981.8 MB 69.2 MB
Events in quadrant A6,251,845557,830
Events in quadrant B5,130,290623,821
Events in quadrant C14,597,033206,473
Events in quadrant D11,616,003342,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233621
B0198181
C0478691
D0391367

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66786449.643606%
B66795428.114987%
C6679465469.681090%
D6678275641.269841%

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 7442 6678 510 510 6.85% 7.64%
B 7444 6680 361 361 4.85% 5.40%
C 7444 6679 4338 4338 58.28% 64.95%
D 7443 6679 2708 2708 36.38% 40.54%

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 0 98 984944 5835.95 672 653 168.7
A 8 8 677099 4010.71 672 653 168.7
A 4 156 578720 3427.41 672 653 168.7
B 4 206 1035648 7280.9 668 647 142.2
B 3 249 761748 5354.1 668 647 142.2
B 5 185 219943 1542.68 668 647 142.2
C 15 213 5585965 47157.17 424 423 118.4
C 4 111 4709482 39757.27 424 423 118.4
C 15 230 601374 5073.66 424 423 118.4
D 12 6 2683676 16890.36 555 535 158.9
D 15 168 1686510 10613.2 555 535 158.9
D 15 185 1308775 8235.36 555 535 158.9

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