ASTROSAT CZTI

Data Quality Report

Orbit 47009

Creation date: 2024-06-27T23:30:39.932606
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_006T01_9000006294_47009cztM0_level2.fits modeM0/AS1C09_006T01_9000006294_47009cztM0_level2_quad_clean.evt
Size (bytes)783,858,24092,093,760
Size747.5 MB 87.8 MB
Events in quadrant A6,432,105722,189
Events in quadrant B13,342,544250,862
Events in quadrant C3,217,011721,788
Events in quadrant D5,518,044638,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232801
B0440771
C0140811
D0208411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65302674.088821%
B6531495275.822998%
C65311071.638340%
D65315308.115143%

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 7630 6531 26 26 0.34% 0.40%
B 7631 6532 3994 3994 52.34% 61.15%
C 7631 6532 63 63 0.83% 0.96%
D 7631 6532 379 379 4.97% 5.80%

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 3465031 21805.87 759 740 158.9
A 9 191 21645 131.58 759 740 158.9
A 13 254 11049 64.89 759 740 158.9
B 3 112 10776108 93574.15 585 570 115.2
B 5 255 109421 945.26 585 570 115.2
B 0 200 63358 545.25 585 570 115.2
C 14 254 241035 1377.42 742 746 174.4
C 3 233 71182 403.76 742 746 174.4
C 12 250 8391 43.82 742 746 174.4
D 1 52 1851557 10038.12 729 706 184.4
D 13 249 680603 3687.43 729 706 184.4
D 13 29 84599 455.0 729 706 184.4

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