ASTROSAT CZTI

Data Quality Report

Orbit 10628

Creation date: 2024-06-27T16:01:42.399398
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/AS1T01_191T01_9000001536_10628cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10628cztM0_level2_quad_clean.evt
Size (bytes)646,761,600103,072,320
Size616.8 MB 98.3 MB
Events in quadrant A4,043,998657,773
Events in quadrant B5,969,668624,772
Events in quadrant C3,859,610658,847
Events in quadrant D5,170,447622,568

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172752
B0229871
C0168591
D0207001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80203023.765586%
B802097012.094763%
C80202362.942643%
D80202563.192020%

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 8450 8021 22 22 0.26% 0.27%
B 8450 8021 407 407 4.82% 5.07%
C 8450 8021 0 0 0.00% 0.00%
D 8450 8021 20 20 0.24% 0.25%

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 141686 685.2 986 967 205.4
A 13 251 40523 192.61 986 967 205.4
A 1 162 35966 170.42 986 967 205.4
B 4 239 1983360 10662.84 959 937 185.9
B 0 219 167341 895.04 959 937 185.9
B 0 214 60946 322.77 959 937 185.9
C 4 254 53432 233.26 966 974 224.9
C 8 128 15117 62.89 966 974 224.9
C 8 112 8776 34.69 966 974 224.9
D 1 52 557223 2411.99 954 926 230.6
D 2 16 545497 2361.15 954 926 230.6
D 8 195 281438 1216.24 954 926 230.6

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