ASTROSAT CZTI

Data Quality Report

Orbit 09686

Creation date: 2024-06-27T15:49:24.005027
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/AS1A02_198T01_9000001376_09686cztM0_level2.evt modeM0/AS1A02_198T01_9000001376_09686cztM0_level2_quad_clean.evt
Size (bytes)482,117,760119,854,080
Size459.8 MB 114.3 MB
Events in quadrant A3,283,636789,522
Events in quadrant B3,439,106791,745
Events in quadrant C3,214,535791,641
Events in quadrant D4,182,566764,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01442
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01448333
B01475935
C01460925
D01712976

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7085721.016231%
B7085771.086803%
C7089470.662999%
D7074981.385355%

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 8111 7102 0 0 0.00% 0.00%
B 8111 7101 1 1 0.01% 0.01%
C 8111 7102 0 0 0.00% 0.00%
D 8111 7101 33 33 0.41% 0.46%

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 15 174 23138 131.71 839 821 169.4
A 13 252 21626 122.78 839 821 169.4
A 0 226 7905 41.81 839 821 169.4
B 10 245 50550 316.56 832 814 157.1
B 0 229 47399 296.5 832 814 157.1
B 0 187 29343 181.58 832 814 157.1
C 9 68 64840 345.55 805 811 185.3
C 14 67 8836 43.31 805 811 185.3
C 13 61 6119 28.65 805 811 185.3
D 8 195 604054 3003.64 805 784 200.8
D 1 52 249372 1237.7 805 784 200.8
D 7 46 128429 635.54 805 784 200.8

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