ASTROSAT CZTI

Data Quality Report

Orbit 11844

Creation date: 2024-06-27T16:19:03.815150
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/AS1A04_088T03_9000001750_11844cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11844cztM0_level2_quad_clean.evt
Size (bytes)574,300,800101,845,440
Size547.7 MB 97.1 MB
Events in quadrant A4,069,789643,941
Events in quadrant B5,176,336637,074
Events in quadrant C3,673,415634,974
Events in quadrant D3,928,250610,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172732
B0206761
C0167371
D0174001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80274004.983182%
B80275687.076118%
C80272332.902703%
D80272783.463311%

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 8458 8029 2 2 0.02% 0.02%
B 8458 8029 126 126 1.49% 1.57%
C 8458 8029 0 0 0.00% 0.00%
D 8458 8029 29 29 0.34% 0.36%

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 118556 585.07 975 954 201.0
A 1 178 61614 301.78 975 954 201.0
A 1 161 53595 261.89 975 954 201.0
B 4 239 575976 3118.5 960 937 184.4
B 15 204 347278 1878.25 960 937 184.4
B 3 64 290373 1569.65 960 937 184.4
C 13 61 6997 27.77 941 940 218.1
C 12 4 2437 6.86 941 940 218.1
C 3 202 2306 6.26 941 940 218.1
D 13 104 128126 564.75 938 906 225.3
D 1 52 77344 339.32 938 906 225.3
D 9 85 57239 250.07 938 906 225.3

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