ASTROSAT CZTI

Data Quality Report

Orbit 35600

Creation date: 2022-04-29T12:41:19.719853
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/AS1A10_065T04_9000005098_35600cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35600cztM0_level2_quad_clean.evt
Size (bytes)536,702,40084,234,240
Size511.8 MB 80.3 MB
Events in quadrant A3,247,823531,069
Events in quadrant B4,616,307520,269
Events in quadrant C3,748,393530,987
Events in quadrant D4,184,874498,889

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137663
B0181122
C0149482
D0169212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A673060.089153%
B67303645.408618%
C67301081.604755%
D67301522.258544%

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 9506 6732 2 2 0.02% 0.03%
B 9506 6732 241 241 2.54% 3.58%
C 9506 6732 69 69 0.73% 1.02%
D 9506 6732 126 126 1.33% 1.87%

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 157691 989.93 783 766 158.5
A 5 168 22468 136.9 783 766 158.5
A 15 169 15694 94.17 783 766 158.5
B 5 172 1350895 9163.83 764 744 147.3
B 15 85 184510 1247.27 764 744 147.3
B 4 81 26583 175.38 764 744 147.3
C 0 10 422451 2333.64 762 766 180.7
C 15 214 279133 1540.5 762 766 180.7
C 0 207 42474 230.82 762 766 180.7
D 7 80 460405 2475.96 758 737 185.7
D 12 17 176716 947.9 758 737 185.7
D 12 6 144493 774.33 758 737 185.7

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