ASTROSAT CZTI

Data Quality Report

Orbit 18735

Creation date: 2024-06-27T17:54:05.851106
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/AS1A05_072T04_9000002802_18735cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18735cztM0_level2_quad_clean.evt
Size (bytes)559,742,400102,749,760
Size533.8 MB 98.0 MB
Events in quadrant A3,588,299654,681
Events in quadrant B5,307,722649,830
Events in quadrant C3,770,104650,427
Events in quadrant D3,773,480631,709

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157142
B0208142
C0160042
D0165082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7544720.954401%
B75445276.985684%
C75441471.948568%
D75431552.054885%

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 7859 7545 0 0 0.00% 0.00%
B 7859 7545 181 181 2.30% 2.40%
C 7859 7545 1 1 0.01% 0.01%
D 7858 7544 98 98 1.25% 1.30%

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 15 192 32100 167.42 918 900 186.4
A 13 254 11961 59.35 918 900 186.4
A 11 29 10973 54.05 918 900 186.4
B 10 245 1404063 8094.29 902 879 173.4
B 12 18 171665 985.18 902 879 173.4
B 7 220 98283 561.88 902 879 173.4
C 3 233 162656 773.35 885 887 209.2
C 14 238 137370 652.47 885 887 209.2
C 0 239 9924 43.2 885 887 209.2
D 14 34 252888 1153.71 890 865 218.4
D 7 96 34040 151.87 890 865 218.4
D 2 234 32304 143.92 890 865 218.4

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