ASTROSAT CZTI

Data Quality Report

Orbit 16992

Creation date: 2024-06-27T17:30:22.815069
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_143T01_9000002524_16992cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16992cztM0_level2_quad_clean.evt
Size (bytes)529,695,360104,063,040
Size505.2 MB 99.2 MB
Events in quadrant A3,270,257678,267
Events in quadrant B3,452,556704,718
Events in quadrant C3,778,914679,396
Events in quadrant D5,105,287641,704

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136492
B0141672
C0154342
D0195282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6425230.357977%
B6425350.544747%
C6425731.136187%
D64252203.424125%

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 7781 6427 3 3 0.04% 0.05%
B 7781 6427 4 4 0.05% 0.06%
C 7781 6427 0 0 0.00% 0.00%
D 7781 6427 146 146 1.88% 2.27%

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 15 174 64010 380.92 834 819 165.9
A 0 226 7398 39.66 834 819 165.9
A 12 194 6149 32.13 834 819 165.9
B 3 64 52505 329.26 843 825 157.0
B 0 229 44910 280.87 843 825 157.0
B 3 209 34204 212.66 843 825 157.0
C 3 233 438524 2293.09 824 833 190.9
C 14 238 128741 670.12 824 833 190.9
C 13 61 5731 25.66 824 833 190.9
D 1 52 1948805 9966.62 814 793 195.5
D 7 223 34228 171.06 814 793 195.5
D 2 152 24019 118.83 814 793 195.5

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