ASTROSAT CZTI

Data Quality Report

Orbit 21785

Creation date: 2024-06-27T18:32:10.141956
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/AS1A07_006T01_9000003226_21785cztM0_level2.evt modeM0/AS1A07_006T01_9000003226_21785cztM0_level2_quad_clean.evt
Size (bytes)682,608,96078,563,520
Size651.0 MB 74.9 MB
Events in quadrant A3,223,131509,609
Events in quadrant B3,405,949527,236
Events in quadrant C3,196,148505,709
Events in quadrant D10,427,902402,752

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131722
B0137222
C0129762
D0351242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6202200.322477%
B6202550.886811%
C6202560.902935%
D6202290446.823605%

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 7517 6203 2 2 0.03% 0.03%
B 7517 6203 20 20 0.27% 0.32%
C 7517 6203 0 0 0.00% 0.00%
D 7517 6202 2863 2863 38.09% 46.16%

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 5 16 36783 221.95 813 800 162.1
A 15 236 27324 163.6 813 800 162.1
A 13 252 24939 148.89 813 800 162.1
B 3 64 72774 473.63 820 801 152.0
B 0 197 31068 199.18 820 801 152.0
B 0 230 21120 133.71 820 801 152.0
C 14 238 125764 684.18 785 792 182.7
C 0 10 8296 41.08 785 792 182.7
C 13 61 5565 26.13 785 792 182.7
D 7 238 7363768 43113.63 704 686 170.8
D 1 52 165960 967.74 704 686 170.8
D 2 136 78057 453.04 704 686 170.8

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