ASTROSAT CZTI

Data Quality Report

Orbit 43827

Creation date: 2024-06-27T22:56:17.507453
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_018T01_9000005906_43827cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43827cztM0_level2_quad_clean.evt
Size (bytes)734,132,160136,039,680
Size700.1 MB 129.7 MB
Events in quadrant A6,593,202915,250
Events in quadrant B5,358,585945,706
Events in quadrant C6,259,176921,168
Events in quadrant D8,337,993773,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253770
B0215290
C0243050
D0304640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80985206.421339%
B80983994.927143%
C80982733.371203%
D8099115814.298061%

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 8098 8098 439 439 5.42% 5.42%
B 8098 8098 285 285 3.52% 3.52%
C 8098 8098 242 242 2.99% 2.99%
D 8099 8099 1020 1020 12.59% 12.59%

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 1576004 7923.86 950 934 198.8
A 10 83 1143813 5749.6 950 934 198.8
A 13 248 76537 380.34 950 934 198.8
B 5 172 716295 3884.33 938 913 184.2
B 5 235 436916 2367.38 938 913 184.2
B 15 36 156657 845.65 938 913 184.2
C 15 158 1063918 4876.55 920 924 218.0
C 3 233 1062435 4869.75 920 924 218.0
C 15 173 256471 1172.34 920 924 218.0
D 5 235 1741815 7724.66 885 857 225.4
D 1 52 681547 3020.23 885 857 225.4
D 7 80 576611 2554.63 885 857 225.4

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