ASTROSAT CZTI

Data Quality Report

Orbit 43575

Creation date: 2024-06-27T22:53:21.181800
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_174T01_9000005880_43575cztM0_level2.fits modeM0/AS1A05_174T01_9000005880_43575cztM0_level2_quad_clean.evt
Size (bytes)1,104,120,00089,628,480
Size1.0 GB 85.5 MB
Events in quadrant A5,542,188812,330
Events in quadrant B4,238,517848,026
Events in quadrant C16,804,506430,555
Events in quadrant D13,766,381149,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213762
B0171662
C0544192
D0454792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67113365.006705%
B67111311.952019%
C6711606190.314409%
D6712671199.985101%

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 7906 6711 141 141 1.78% 2.10%
B 7906 6711 23 23 0.29% 0.34%
C 7905 6710 5894 5894 74.56% 87.84%
D 7906 6711 3959 3959 50.08% 58.99%

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 10 83 803655 4905.31 800 789 163.7
A 10 99 756282 4615.87 800 789 163.7
A 15 222 310128 1889.98 800 789 163.7
B 4 206 783468 5000.3 807 784 156.5
B 0 230 103619 656.97 807 784 156.5
B 0 200 72549 458.48 807 784 156.5
C 15 174 7740599 76900.99 427 430 100.7
C 15 142 5305250 52705.04 427 430 100.7
C 15 126 977173 9704.25 427 430 100.7
D 4 212 5503623 101655.68 177 170 54.1
D 13 187 2195634 40552.97 177 170 54.1
D 4 216 1556411 28745.72 177 170 54.1

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