ASTROSAT CZTI

Data Quality Report

Orbit 24731

Creation date: 2024-06-27T19:09:14.936689
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/AS1T03_194T01_9000003620_24731cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24731cztM0_level2_quad_clean.evt
Size (bytes)1,512,097,920243,135,360
Size1.4 GB 231.9 MB
Events in quadrant A8,939,3911,567,926
Events in quadrant B9,185,1881,574,396
Events in quadrant C13,371,2061,479,329
Events in quadrant D13,027,2801,443,756

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391103
B0395943
C0535653
D0520123

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188461850.981641%
B188472411.278718%
C188475422.875789%
D1884712856.818061%

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 20956 18846 2 2 0.01% 0.01%
B 20957 18847 0 0 0.00% 0.00%
C 20957 18847 6 6 0.03% 0.03%
D 20957 18848 851 851 4.06% 4.52%

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 10 255 41633 85.17 2300 2252 462.4
A 12 96 35571 72.06 2300 2252 462.4
A 13 254 28914 57.66 2300 2252 462.4
B 3 64 94428 209.98 2273 2212 439.2
B 0 189 64329 141.44 2273 2212 439.2
B 12 111 55742 121.89 2273 2212 439.2
C 7 247 4338752 8446.82 2185 2200 513.4
C 14 238 343634 665.05 2185 2200 513.4
C 10 91 66994 126.21 2185 2200 513.4
D 1 52 2463855 4600.74 2197 2131 535.1
D 12 233 1574907 2939.38 2197 2131 535.1
D 7 238 345247 641.25 2197 2131 535.1

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