ASTROSAT CZTI

Data Quality Report

Orbit 37124

Creation date: 2024-06-27T21:35:53.118649
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_079T01_9000005284_37124cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37124cztM0_level2_quad_clean.evt
Size (bytes)505,494,72066,971,520
Size482.1 MB 63.9 MB
Events in quadrant A3,522,031398,477
Events in quadrant B3,229,952403,673
Events in quadrant C3,317,580400,361
Events in quadrant D4,807,266380,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143653
B0137942
C0136192
D0185902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63631211.901619%
B6363520.817225%
C6363450.707214%
D63635228.203678%

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 9349 6365 112 112 1.20% 1.76%
B 9349 6365 26 26 0.28% 0.41%
C 9349 6365 40 40 0.43% 0.63%
D 9349 6365 533 533 5.70% 8.37%

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 288378 1940.76 730 716 148.2
A 15 174 239694 1612.31 730 716 148.2
A 15 237 127588 855.97 730 716 148.2
B 5 184 174992 1234.13 728 709 141.2
B 5 255 89400 628.04 728 709 141.2
B 5 172 53860 376.37 728 709 141.2
C 15 214 274099 1642.63 715 720 166.4
C 14 254 214230 1282.9 715 720 166.4
C 0 10 34866 205.17 715 720 166.4
D 12 17 1325046 7824.63 691 675 169.3
D 2 250 392915 2317.43 691 675 169.3
D 12 235 182061 1071.66 691 675 169.3

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