ASTROSAT CZTI

Data Quality Report

Orbit 23613

Creation date: 2024-06-27T18:56:48.777969
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_178T01_9000003488_23613cztM0_level2.evt modeM0/AS1T03_178T01_9000003488_23613cztM0_level2_quad_clean.evt
Size (bytes)718,729,92078,145,920
Size685.4 MB 74.5 MB
Events in quadrant A3,785,955486,158
Events in quadrant B9,681,598385,300
Events in quadrant C3,877,156481,398
Events in quadrant D3,893,126470,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163222
B0339552
C0164452
D0169012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78073284.201358%
B7807276535.416934%
C78073794.854618%
D78072633.368772%

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 7912 7807 0 0 0.00% 0.00%
B 7912 7807 1951 1951 24.66% 24.99%
C 7912 7807 1 1 0.01% 0.01%
D 7912 7807 9 9 0.11% 0.12%

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 11447 52.97 982 958 198.0
A 3 137 9341 42.34 982 958 198.0
A 0 226 8305 37.1 982 958 198.0
B 3 64 6149488 37985.82 827 802 161.9
B 0 229 259694 1599.4 827 802 161.9
B 12 111 20258 120.2 827 802 161.9
C 14 238 147340 649.62 952 955 225.3
C 13 61 6436 24.32 952 955 225.3
C 7 247 5921 22.04 952 955 225.3
D 1 52 181156 765.22 967 940 235.5
D 12 233 43125 179.12 967 940 235.5
D 2 234 31264 128.76 967 940 235.5

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