ASTROSAT CZTI

Data Quality Report

Orbit 22666

Creation date: 2024-06-27T18:44:12.427804
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/AS1A08_007T01_9000003362_22666cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22666cztM0_level2_quad_clean.evt
Size (bytes)539,285,76092,154,240
Size514.3 MB 87.9 MB
Events in quadrant A3,320,481608,854
Events in quadrant B3,492,130613,629
Events in quadrant C3,325,452576,769
Events in quadrant D5,775,703560,030

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136531
B0141721
C0137311
D0215567

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6178691.116866%
B6178651.052120%
C61791041.683120%
D61785558.983490%

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 7487 6178 0 0 0.00% 0.00%
B 7487 6178 1 1 0.01% 0.02%
C 7489 6180 1 1 0.01% 0.02%
D 7488 6179 496 496 6.62% 8.03%

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 13 254 11154 60.62 861 847 170.0
A 0 226 7711 40.37 861 847 170.0
A 12 194 6388 32.59 861 847 170.0
B 0 190 44326 284.63 844 828 152.8
B 0 229 35434 226.44 844 828 152.8
B 12 6 33234 212.05 844 828 152.8
C 14 238 132140 707.06 812 818 185.7
C 10 22 14650 74.47 812 818 185.7
C 8 222 10631 52.84 812 818 185.7
D 1 52 1419797 7244.09 816 794 195.9
D 15 0 547139 2789.12 816 794 195.9
D 12 227 296784 1511.04 816 794 195.9

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