ASTROSAT CZTI

Data Quality Report

Orbit 16089

Creation date: 2024-06-27T17:17:49.447836
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/AS1T02_110T01_9000002376_16089cztM0_level2.evt modeM0/AS1T02_110T01_9000002376_16089cztM0_level2_quad_clean.evt
Size (bytes)1,324,857,600216,921,600
Size1.2 GB 206.9 MB
Events in quadrant A8,982,6281,365,903
Events in quadrant B9,441,1071,359,875
Events in quadrant C9,069,9521,308,585
Events in quadrant D11,372,8821,253,990

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392345
B0399924
C0390364
D0470914

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185832031.092396%
B185832341.259215%
C185832151.156971%
D185839305.004574%

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 20444 18584 55 55 0.27% 0.30%
B 20444 18584 39 39 0.19% 0.21%
C 20444 18584 1 1 0.00% 0.01%
D 20444 18585 748 748 3.66% 4.02%

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 15 239 396129 890.06 2199 2150 442.6
A 12 96 69014 151.06 2199 2150 442.6
A 15 174 61468 134.01 2199 2150 442.6
B 7 220 255328 601.99 2206 2148 420.6
B 15 201 94071 218.57 2206 2148 420.6
B 0 189 85911 199.16 2206 2148 420.6
C 3 233 445351 896.65 2114 2127 494.3
C 14 238 321603 646.31 2114 2127 494.3
C 7 247 27705 51.74 2114 2127 494.3
D 7 38 2469252 4813.72 2107 2041 512.5
D 12 218 623444 1212.41 2107 2041 512.5
D 13 112 74585 141.54 2107 2041 512.5

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