ASTROSAT CZTI

Data Quality Report

Orbit 03927

Creation date: 2024-06-27T14:35:20.058506
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/AS1G05_172T01_9000000502_03927cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03927cztM0_level2_quad_clean.evt
Size (bytes)546,120,00088,755,840
Size520.8 MB 84.6 MB
Events in quadrant A3,564,698549,113
Events in quadrant B4,031,005551,930
Events in quadrant C3,283,910550,920
Events in quadrant D5,151,657514,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01583915
B0165696
C01539414
D02050438

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74831281.710544%
B74871101.469213%
C7483280.374181%
D74793554.746624%

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 7490 7490 5 5 0.07% 0.07%
B 7490 7490 2 2 0.03% 0.03%
C 7490 7489 0 0 0.00% 0.00%
D 7490 7489 326 326 4.35% 4.35%

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 0 118 117817 656.36 867 845 178.2
A 2 79 46735 257.5 867 845 178.2
A 0 50 29152 158.84 867 845 178.2
B 3 0 365858 2149.58 869 847 169.8
B 15 204 192987 1131.53 869 847 169.8
B 0 229 43321 250.13 869 847 169.8
C 10 65 9343 43.58 836 839 195.1
C 12 4 8391 38.7 836 839 195.1
C 13 61 7072 31.94 836 839 195.1
D 9 82 641270 3212.48 828 801 199.4
D 1 7 450999 2258.11 828 801 199.4
D 8 112 381702 1910.53 828 801 199.4

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
Veto Counter