ASTROSAT CZTI

Data Quality Report

Orbit 23251

Creation date: 2024-06-27T18:51:52.118357
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/AS1A08_004T03_9000003438_23251cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23251cztM0_level2_quad_clean.evt
Size (bytes)545,385,60087,566,400
Size520.1 MB 83.5 MB
Events in quadrant A3,618,041540,180
Events in quadrant B3,732,896549,471
Events in quadrant C3,758,025524,021
Events in quadrant D4,887,850504,570

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157842
B0159462
C0160082
D0198092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7672360.469239%
B7672650.847237%
C7672881.147028%
D76723404.431700%

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 8562 7674 0 0 0.00% 0.00%
B 8562 7674 2 2 0.02% 0.03%
C 8562 7674 3 3 0.04% 0.04%
D 8562 7673 267 267 3.12% 3.48%

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 13 254 11776 57.2 937 916 189.9
A 3 137 8377 39.3 937 916 189.9
A 0 226 8018 37.41 937 916 189.9
B 12 111 22443 117.89 936 910 182.6
B 11 111 19767 103.24 936 910 182.6
B 14 111 16970 87.93 936 910 182.6
C 14 238 141096 655.62 903 909 213.8
C 0 207 47585 218.29 903 909 213.8
C 0 239 16137 71.22 903 909 213.8
D 1 52 1319732 5958.13 903 877 221.4
D 2 152 98698 441.92 903 877 221.4
D 2 234 29851 130.89 903 877 221.4

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