ASTROSAT CZTI

Data Quality Report

Orbit 20078

Creation date: 2024-06-27T18:10:59.968265
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_180T01_9000002992_20078cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20078cztM0_level2_quad_clean.evt
Size (bytes)517,199,04097,332,480
Size493.2 MB 92.8 MB
Events in quadrant A3,725,123637,498
Events in quadrant B3,570,670640,568
Events in quadrant C3,401,964614,150
Events in quadrant D4,533,117610,315

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148532
B0144492
C0136942
D0176072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63781933.026027%
B63781322.069614%
C63771181.850400%
D63772203.449898%

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 7493 6379 59 59 0.79% 0.92%
B 7493 6379 6 6 0.08% 0.09%
C 7492 6378 0 0 0.00% 0.00%
D 7492 6378 104 104 1.39% 1.63%

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 14 238 260185 1493.35 870 856 173.7
A 14 254 71384 406.14 870 856 173.7
A 4 2 25724 143.2 870 856 173.7
B 10 245 96824 587.16 865 847 163.5
B 0 198 21550 126.66 865 847 163.5
B 12 111 19053 111.38 865 847 163.5
C 14 238 131645 674.37 836 847 194.0
C 13 61 5947 26.29 836 847 194.0
C 7 220 5399 23.47 836 847 194.0
D 1 52 581585 2830.15 851 830 205.2
D 12 218 400953 1949.89 851 830 205.2
D 7 238 277062 1346.14 851 830 205.2

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