ASTROSAT CZTI

Data Quality Report

Orbit 27072

Creation date: 2024-06-27T19:36:08.910445
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/AS1A09_120T02_9000003904_27072cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27072cztM0_level2_quad_clean.evt
Size (bytes)607,991,040113,466,240
Size579.8 MB 108.2 MB
Events in quadrant A4,174,869741,102
Events in quadrant B4,782,873749,970
Events in quadrant C3,679,655733,002
Events in quadrant D5,272,557695,486

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171090
B0193530
C0155600
D0207470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74261361.831403%
B74273444.631749%
C74261492.006464%
D74273835.156860%

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 7661 7429 19 19 0.25% 0.26%
B 7662 7430 149 149 1.94% 2.01%
C 7662 7430 0 0 0.00% 0.00%
D 7662 7430 277 277 3.62% 3.73%

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 14 235 567691 2999.97 930 913 188.9
A 6 16 16138 80.59 930 913 188.9
A 13 254 12104 59.23 930 913 188.9
B 0 189 1038055 5801.29 925 904 178.8
B 7 205 104530 579.63 925 904 178.8
B 12 111 21630 115.93 925 904 178.8
C 14 238 142473 661.09 900 912 214.1
C 15 208 29482 133.42 900 912 214.1
C 13 61 6139 24.41 900 912 214.1
D 1 52 1417294 6611.9 887 864 214.2
D 2 250 347400 1617.63 887 864 214.2
D 13 85 58002 266.72 887 864 214.2

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