ASTROSAT CZTI

Data Quality Report

Orbit 18585

Creation date: 2024-06-27T17:51:55.381189
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_072T02_9000002762_18585cztM0_level2.evt modeM0/AS1A05_072T02_9000002762_18585cztM0_level2_quad_clean.evt
Size (bytes)459,705,600162,915,840
Size438.4 MB 155.4 MB
Events in quadrant A3,287,2361,075,052
Events in quadrant B3,296,5131,081,989
Events in quadrant C3,380,1491,072,926
Events in quadrant D3,543,7451,278,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135663
B0136962
C0139502
D0145242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6107380.622237%
B6107490.802358%
C6108911.489849%
D61081201.964637%

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 7512 6108 0 0 0.00% 0.00%
B 7512 6108 0 0 0.00% 0.00%
C 7513 6109 1 1 0.01% 0.02%
D 7513 6109 48 48 0.64% 0.79%

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 13 210 43061 251.86 832 818 167.7
A 3 254 24839 143.22 832 818 167.7
A 13 254 10157 55.68 832 818 167.7
B 12 111 18276 110.91 841 822 157.4
B 11 111 15675 94.38 841 822 157.4
B 14 111 13575 81.04 841 822 157.4
C 14 238 129119 671.63 826 835 191.0
C 9 54 26559 134.68 826 835 191.0
C 13 61 5676 25.34 826 835 191.0
D 1 52 396499 1981.47 822 800 199.7
D 7 238 27982 136.11 822 800 199.7
D 2 234 24981 121.08 822 800 199.7

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