ASTROSAT CZTI

Data Quality Report

Orbit 27405

Creation date: 2024-06-27T19:39:44.866351
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/AS1T03_249T01_9000003934_27405cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27405cztM0_level2_quad_clean.evt
Size (bytes)523,823,04080,988,480
Size499.6 MB 77.2 MB
Events in quadrant A3,630,549496,409
Events in quadrant B3,664,350494,596
Events in quadrant C3,640,483474,398
Events in quadrant D4,426,959472,510

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153180
B0154040
C0153540
D0179530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7383630.853312%
B73831071.449275%
C73831502.031694%
D73831181.598266%

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 7763 7384 0 0 0.00% 0.00%
B 7763 7384 5 5 0.06% 0.07%
C 7763 7384 1 1 0.01% 0.01%
D 7763 7384 49 49 0.63% 0.66%

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 13356 66.19 935 916 188.0
A 3 137 9048 43.27 935 916 188.0
A 0 226 7980 37.58 935 916 188.0
B 12 111 22176 119.64 920 895 177.9
B 11 111 19879 106.73 920 895 177.9
B 14 111 17328 92.38 920 895 177.9
C 14 238 140341 657.62 891 894 212.0
C 2 16 29401 134.44 891 894 212.0
C 13 61 6126 24.67 891 894 212.0
D 1 52 803875 3697.41 906 882 217.2
D 2 250 131009 599.17 906 882 217.2
D 2 234 32266 144.51 906 882 217.2

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