ASTROSAT CZTI

Data Quality Report

Orbit 31293

Creation date: 2024-06-27T20:23:43.028511
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/AS1A10_109T01_9000004492_31293cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31293cztM0_level2_quad_clean.evt
Size (bytes)221,587,20036,371,520
Size211.3 MB 34.7 MB
Events in quadrant A1,392,101243,156
Events in quadrant B1,921,253238,973
Events in quadrant C1,790,632216,535
Events in quadrant D1,439,787227,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089423317
B0128345666
C0108033814
D0100854333

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08233
B08341
C08640
D08634

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122
B0121
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2517361.430274%
B2319903.880983%
C24611767.151564%
D2441381.556739%

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 4831 2800 0 0 0.00% 0.00%
B 4761 2604 1 1 0.02% 0.04%
C 4816 2765 30 30 0.62% 1.08%
D 4849 2722 9 9 0.19% 0.33%

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 4931 63.61 361 355 71.9
A 3 137 3296 40.88 361 355 71.9
A 0 226 3044 37.38 361 355 71.9
B 6 159 602145 9428.95 326 318 63.8
B 4 80 24711 382.17 326 318 63.8
B 0 230 11421 173.95 326 318 63.8
C 3 233 330414 4370.64 323 326 75.5
C 0 10 86316 1138.58 323 326 75.5
C 14 238 67560 890.23 323 326 75.5
D 8 195 125206 1533.09 332 324 81.5
D 12 233 31559 383.45 332 324 81.5
D 3 14 18480 222.89 332 324 81.5

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