ASTROSAT CZTI

Data Quality Report

Orbit 32169

Creation date: 2024-06-27T20:37:12.398386
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/AS1A09_131T01_9000004690_32169cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32169cztM0_level2_quad_clean.evt
Size (bytes)231,776,64045,550,080
Size221.0 MB 43.4 MB
Events in quadrant A1,311,329308,611
Events in quadrant B2,308,749297,673
Events in quadrant C1,524,393290,166
Events in quadrant D1,685,072284,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0679
B0688
C07012
D0668

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069501278
B0110212001
C076101333
D086131866

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113988223442410446
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A276640.144613%
B27221354.959589%
C2763873.148751%
D2762812.932657%

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 6665 2876 0 0 0.00% 0.00%
B 6665 2837 105 105 1.58% 3.70%
C 6664 2872 50 50 0.75% 1.74%
D 6661 2856 69 69 1.04% 2.42%

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 12 189 51543 764.72 324 317 67.0
A 13 6 7502 107.26 324 317 67.0
A 13 254 4975 69.54 324 317 67.0
B 6 159 691287 11471.98 304 297 60.2
B 5 172 290803 4823.05 304 297 60.2
B 0 190 43323 714.33 304 297 60.2
C 0 10 243041 3417.47 299 301 71.0
C 14 238 52160 730.11 299 301 71.0
C 3 233 41932 586.11 299 301 71.0
D 2 250 225817 3049.55 306 299 74.0
D 8 195 190080 2566.3 306 299 74.0
D 12 233 69954 941.91 306 299 74.0

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