ASTROSAT CZTI

Data Quality Report

Orbit 12221

Creation date: 2024-06-27T16:24:00.078148
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/AS1C03_014T01_9000001804_12221cztM0_level2.evt modeM0/AS1C03_014T01_9000001804_12221cztM0_level2_quad_clean.evt
Size (bytes)583,666,560124,407,360
Size556.6 MB 118.6 MB
Events in quadrant A4,180,444848,294
Events in quadrant B6,002,768766,345
Events in quadrant C3,298,518842,510
Events in quadrant D3,711,782814,456

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172462
B0225521
C0150381
D0161391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71142072.909755%
B7114114616.109081%
C7114600.843407%
D7114791.110486%

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 7304 7115 20 20 0.27% 0.28%
B 7304 7115 614 614 8.41% 8.63%
C 7305 7116 20 20 0.27% 0.28%
D 7304 7115 49 49 0.67% 0.69%

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 1 162 267385 1632.04 803 787 163.4
A 13 251 230848 1408.37 803 787 163.4
A 1 178 150332 915.48 803 787 163.4
B 4 239 2124943 15372.87 734 716 138.2
B 4 206 297349 2146.71 734 716 138.2
B 3 64 284725 2055.35 734 716 138.2
C 15 208 221134 1232.01 777 781 178.9
C 4 175 18010 96.33 777 781 178.9
C 0 207 6680 32.98 777 781 178.9
D 1 52 200338 1061.51 775 750 188.0
D 10 199 95503 503.94 775 750 188.0
D 13 249 88825 468.43 775 750 188.0

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