ASTROSAT CZTI

Data Quality Report

Orbit 25156

Creation date: 2024-06-27T19:14:40.101514
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/AS1A07_018T09_9000003682_25156cztM0_level2.evt modeM0/AS1A07_018T09_9000003682_25156cztM0_level2_quad_clean.evt
Size (bytes)517,556,16077,538,240
Size493.6 MB 73.9 MB
Events in quadrant A3,467,188486,418
Events in quadrant B3,515,351491,588
Events in quadrant C3,968,879472,723
Events in quadrant D4,302,818464,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144310
B0144880
C0158170
D0171570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6196771.242737%
B6196991.597805%
C61961752.824403%
D61961832.953518%

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 6196 0 0 0.00% 0.00%
B 7476 6196 8 8 0.11% 0.13%
C 7476 6196 6 6 0.08% 0.10%
D 7476 6196 87 87 1.16% 1.40%

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 13 254 9855 50.58 897 882 177.4
A 0 226 7878 39.44 897 882 177.4
A 3 137 7590 37.81 897 882 177.4
B 0 190 35340 209.2 888 870 164.8
B 12 111 19299 111.85 888 870 164.8
B 11 111 17432 100.52 888 870 164.8
C 7 247 327406 1625.93 867 875 200.8
C 14 238 141248 698.97 867 875 200.8
C 7 87 87756 432.62 867 875 200.8
D 1 52 601876 2837.11 877 854 211.8
D 8 195 239132 1124.79 877 854 211.8
D 12 235 164767 773.75 877 854 211.8

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