ASTROSAT CZTI

Data Quality Report

Orbit 04891

Creation date: 2024-06-27T14:48:29.906913
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_237T01_9000000620_04891cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04891cztM0_level2_quad_clean.evt
Size (bytes)446,826,24071,064,000
Size426.1 MB 67.8 MB
Events in quadrant A3,109,466437,663
Events in quadrant B3,490,124439,174
Events in quadrant C2,970,301435,442
Events in quadrant D3,547,945413,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128032
B0139471
C0125851
D0144391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6091921.510425%
B6091951.559678%
C6091470.771630%
D60911201.970120%

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 7321 6091 1 1 0.01% 0.02%
B 7321 6091 22 22 0.30% 0.36%
C 7321 6091 0 0 0.00% 0.00%
D 7321 6091 44 44 0.60% 0.72%

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 50 39529 242.77 791 779 159.6
A 8 15 23192 140.42 791 779 159.6
A 12 194 7983 45.13 791 779 159.6
B 15 204 252492 1688.5 787 771 149.1
B 10 245 87620 582.56 787 771 149.1
B 15 54 44426 292.83 787 771 149.1
C 12 4 15438 83.94 756 762 174.8
C 13 61 6212 31.17 756 762 174.8
C 8 222 2695 11.06 756 762 174.8
D 2 136 268829 1429.13 762 738 187.6
D 10 15 148564 788.03 762 738 187.6
D 13 235 85913 454.05 762 738 187.6

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