ASTROSAT CZTI

Data Quality Report

Orbit 31477

Creation date: 2024-06-27T20:29:00.835031
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/AS1T04_029T01_9000004582_31477cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31477cztM0_level2_quad_clean.evt
Size (bytes)630,466,560112,250,880
Size601.3 MB 107.1 MB
Events in quadrant A3,749,164733,212
Events in quadrant B6,080,479731,450
Events in quadrant C4,200,385692,684
Events in quadrant D4,521,113685,445

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01622
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01638115
B02430247
C01751333
D01865417

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80171351.683922%
B80082052.559940%
C80083584.470529%
D80172122.644381%

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 8349 8024 0 0 0.00% 0.00%
B 8349 8023 2 2 0.02% 0.02%
C 8349 8020 1 1 0.01% 0.01%
D 8349 8023 109 109 1.31% 1.36%

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 11652 54.44 972 953 196.5
A 3 137 10449 48.32 972 953 196.5
A 0 226 8008 35.9 972 953 196.5
B 6 159 2146498 11685.22 950 925 183.6
B 4 80 146008 790.15 950 925 183.6
B 0 190 41149 219.07 950 925 183.6
C 14 238 204999 931.74 923 928 219.0
C 3 233 175730 798.1 923 928 219.0
C 14 254 83789 378.32 923 928 219.0
D 8 195 771538 3422.57 944 920 225.2
D 2 250 72126 316.25 944 920 225.2
D 5 233 69741 305.66 944 920 225.2

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