ASTROSAT CZTI

Data Quality Report

Orbit 05905

Creation date: 2024-06-27T15:00:40.820314
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/AS1A02_174T01_9000000766_05905cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05905cztM0_level2_quad_clean.evt
Size (bytes)415,546,56067,271,040
Size396.3 MB 64.2 MB
Events in quadrant A2,918,450404,969
Events in quadrant B3,226,126414,750
Events in quadrant C2,837,690403,023
Events in quadrant D3,176,739377,204

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129383
B0137002
C0127492
D0139052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6255240.383693%
B6255370.591527%
C625560.095923%
D6255671.071143%

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 7570 6256 8 8 0.11% 0.13%
B 7570 6256 14 14 0.18% 0.22%
C 7570 6256 0 0 0.00% 0.00%
D 7570 6256 35 35 0.46% 0.56%

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 15 236 51492 336.18 736 718 151.0
A 15 234 29287 189.15 736 718 151.0
A 0 226 7079 42.11 736 718 151.0
B 15 204 65620 453.85 752 735 143.0
B 15 255 57434 396.59 752 735 143.0
B 4 81 56041 386.85 752 735 143.0
C 12 4 10041 55.61 722 726 167.5
C 13 61 5766 30.09 722 726 167.5
C 9 247 4223 20.87 722 726 167.5
D 2 152 286409 1650.73 707 686 173.1
D 5 81 54669 311.88 707 686 173.1
D 10 40 48575 276.67 707 686 173.1

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