ASTROSAT CZTI

Data Quality Report

Orbit 31774

Creation date: 2024-06-27T20:32:33.811724
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_109T01_9000004638_31774cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31774cztM0_level2_quad_clean.evt
Size (bytes)575,242,560119,266,560
Size548.6 MB 113.7 MB
Events in quadrant A3,959,514799,704
Events in quadrant B4,970,127818,666
Events in quadrant C3,634,034792,409
Events in quadrant D4,439,998770,391

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157631
B0189211
C0147391
D0173963

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61812764.465297%
B61811532.475328%
C61822013.251375%
D6181911.472254%

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 7476 6182 167 167 2.23% 2.70%
B 7476 6182 0 0 0.00% 0.00%
C 7477 6183 20 20 0.27% 0.32%
D 7476 6182 8 8 0.11% 0.13%

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 0 13 662517 3913.24 850 838 169.1
A 14 238 22289 126.86 850 838 169.1
A 13 254 10772 58.75 850 838 169.1
B 6 159 1611614 10209.88 848 831 157.8
B 10 245 24962 152.95 848 831 157.8
B 12 111 18071 109.28 848 831 157.8
C 14 238 136073 694.08 837 848 194.8
C 0 10 131055 668.33 837 848 194.8
C 3 233 45113 227.2 837 848 194.8
D 8 195 1140590 5741.97 844 828 198.5
D 12 218 50781 251.66 844 828 198.5
D 2 250 37047 182.47 844 828 198.5

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