ASTROSAT CZTI

Data Quality Report

Orbit 09123

Creation date: 2024-06-27T15:41:35.258689
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/AS1A03_105T01_9000001268_09123cztM0_level2.evt modeM0/AS1A03_105T01_9000001268_09123cztM0_level2_quad_clean.evt
Size (bytes)553,083,84077,817,600
Size527.5 MB 74.2 MB
Events in quadrant A4,637,180457,863
Events in quadrant B3,803,837466,923
Events in quadrant C3,631,387456,098
Events in quadrant D4,155,877440,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018962402
B016466232
C016436216
D017953334

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01604
B01604
C01604
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76493574.667277%
B77082843.684484%
C77182032.630215%
D76863244.215457%

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 8255 7790 50 50 0.61% 0.64%
B 8255 7804 0 0 0.00% 0.00%
C 8255 7810 1 1 0.01% 0.01%
D 8255 7792 108 108 1.31% 1.39%

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 8 5 582183 3000.92 945 925 193.7
A 15 223 209596 1077.33 945 925 193.7
A 15 239 83845 428.1 945 925 193.7
B 0 214 71265 375.41 956 931 187.4
B 12 111 21536 109.98 956 931 187.4
B 11 111 17417 88.0 956 931 187.4
C 13 61 6886 27.33 926 931 217.9
C 14 234 6221 24.28 926 931 217.9
C 8 128 5913 22.86 926 931 217.9
D 1 52 332813 1451.43 918 893 228.7
D 2 14 237564 1034.92 918 893 228.7
D 8 195 58581 252.26 918 893 228.7

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