ASTROSAT CZTI

Data Quality Report

Orbit 21336

Creation date: 2024-06-27T18:26:32.567666
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_108T01_9000003146_21336cztM0_level2.evt modeM0/AS1A05_108T01_9000003146_21336cztM0_level2_quad_clean.evt
Size (bytes)494,830,080102,162,240
Size471.9 MB 97.4 MB
Events in quadrant A3,625,908670,795
Events in quadrant B3,708,684686,940
Events in quadrant C3,483,887644,544
Events in quadrant D3,719,309631,505

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149912
B0153022
C0145652
D0154272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66011332.014846%
B66001442.181818%
C66001562.363636%
D66001332.015152%

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 7891 6601 3 3 0.04% 0.05%
B 7890 6600 11 11 0.14% 0.17%
C 7890 6600 0 0 0.00% 0.00%
D 7890 6600 38 38 0.48% 0.58%

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 5 168 68284 377.29 907 893 178.6
A 15 174 34760 189.61 907 893 178.6
A 15 236 16682 88.4 907 893 178.6
B 3 64 68434 401.2 903 883 168.4
B 0 244 56246 328.82 903 883 168.4
B 0 230 26967 154.92 903 883 168.4
C 14 238 138795 699.95 856 863 197.1
C 13 61 6036 26.25 856 863 197.1
C 8 49 3782 14.81 856 863 197.1
D 1 52 194324 937.82 863 842 206.3
D 13 153 108898 523.75 863 842 206.3
D 13 174 84276 404.41 863 842 206.3

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