ASTROSAT CZTI

Data Quality Report

Orbit 20190504_A05_229T02_9000002890_level2

Creation date: 2025-11-30T00:38:19.223111
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_229T02_9000002890cztM0_level2.fits modeM0/AS1A05_229T02_9000002890cztM0_level2_quad_clean.evt
Size (bytes)1,747,998,7201,632,150,720
Size1.6 GB 1.5 GB
Events in quadrant A10,931,3569,835,682
Events in quadrant B10,404,0209,806,721
Events in quadrant C10,551,8549,358,963
Events in quadrant D8,866,3288,250,586

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03751530
B03887180
C04069230
D05364630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036220
B036220
C036220
D036220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02830
B02830
C02830
D02830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17779320711.164838%
B17779333381.877464%
C17779332631.835280%
D177793145648.191549%

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 206004 177772 0 0 0.00% 0.00%
B 206004 177766 0 0 0.00% 0.00%
C 206004 177772 0 0 0.00% 0.00%
D 206004 176681 0 0 0.00% 0.00%

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 0 29 10299 11.14 2851 2683 683.8
A 7 110 8780 8.92 2851 2683 683.8
A 9 19 8327 8.25 2851 2683 683.8
B 2 9 8228 10.55 2750 2626 531.1
B 2 8 6969 8.18 2750 2626 531.1
B 5 225 6796 7.85 2750 2626 531.1
C 12 241 7250 6.54 2789 2603 711.0
C 12 250 7202 6.47 2789 2603 711.0
C 3 126 7150 6.4 2789 2603 711.0
D 10 189 6395 6.11 2537 2313 667.5
D 15 46 6255 5.9 2537 2313 667.5
D 3 14 6246 5.89 2537 2313 667.5

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