ASTROSAT CZTI

Data Quality Report

Orbit 48509

Creation date: 2024-09-16T19:13:14.382856
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_037T01_9000006432_48509cztM0_level2.fits modeM0/AS1A13_037T01_9000006432_48509cztM0_level2_quad_clean.evt
Size (bytes)548,441,280126,639,360
Size523.0 MB 120.8 MB
Events in quadrant A8,165,356823,503
Events in quadrant B3,734,476866,609
Events in quadrant C3,546,350830,549
Events in quadrant D4,213,394739,266

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308311
B0171401
C0169811
D0188461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82673974.802226%
B82682753.326076%
C82681822.201258%
D82683804.596033%

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 8342 8268 3 3 0.04% 0.04%
B 8343 8269 2 2 0.02% 0.02%
C 8343 8269 0 0 0.00% 0.00%
D 8343 8269 195 195 2.34% 2.36%

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 4456313 23277.77 908 885 191.4
A 12 189 184261 958.06 908 885 191.4
A 13 254 15356 75.6 908 885 191.4
B 12 16 57529 309.15 913 879 183.2
B 0 186 29409 155.69 913 879 183.2
B 12 111 24313 127.88 913 879 183.2
C 1 3 11154 48.06 904 906 213.2
C 14 254 7855 32.59 904 906 213.2
C 13 61 5953 23.67 904 906 213.2
D 2 165 650249 2922.39 889 859 222.2
D 2 249 76248 339.27 889 859 222.2
D 10 199 49071 216.96 889 859 222.2

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