ASTROSAT CZTI

Data Quality Report

Orbit 02812

Creation date: 2024-06-27T14:22:25.044322
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/AS1T01_055T01_9000000408_02812cztM0_level2.evt modeM0/AS1T01_055T01_9000000408_02812cztM0_level2_quad_clean.evt
Size (bytes)157,250,88016,280,640
Size150.0 MB 15.5 MB
Events in quadrant A1,115,67976,466
Events in quadrant B1,176,52575,417
Events in quadrant C1,120,72874,943
Events in quadrant D1,165,28474,097

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053671
B054202
C053522
D054830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A266650.187547%
B266540.150094%
C266510.037523%
D266620.075019%

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 2666 2666 4 4 0.15% 0.15%
B 2665 2665 1 1 0.04% 0.04%
C 2665 2665 0 0 0.00% 0.00%
D 2666 2666 1 1 0.04% 0.04%

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 0 128 12090 194.52 285 279 60.7
A 0 149 3091 46.31 285 279 60.7
A 0 226 3061 45.82 285 279 60.7
B 0 168 20213 340.28 294 287 58.6
B 0 182 10908 181.38 294 287 58.6
B 0 189 7074 115.9 294 287 58.6
C 1 3 7616 106.6 283 285 68.8
C 3 14 2449 31.47 283 285 68.8
C 3 202 2398 30.73 283 285 68.8
D 0 226 35364 515.24 275 268 68.1
D 1 4 22495 326.31 275 268 68.1
D 1 66 21926 317.96 275 268 68.1

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
Veto Counter