ASTROSAT CZTI

Data Quality Report

Orbit 23322

Creation date: 2024-06-27T18:52:49.427700
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/AS1A07_148T05_9000003446_23322cztM0_level2.evt modeM0/AS1A07_148T05_9000003446_23322cztM0_level2_quad_clean.evt
Size (bytes)488,554,56093,312,000
Size465.9 MB 89.0 MB
Events in quadrant A3,630,612591,605
Events in quadrant B3,571,190595,255
Events in quadrant C3,567,523574,589
Events in quadrant D3,542,593568,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153672
B0150562
C0151133
D0153232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71251111.557895%
B71251301.824561%
C71241442.021336%
D7124650.912409%

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 7665 7126 21 21 0.27% 0.29%
B 7665 7126 4 4 0.05% 0.06%
C 7664 7125 1 1 0.01% 0.01%
D 7664 7125 13 13 0.17% 0.18%

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 6 16 183408 1008.46 894 876 181.0
A 13 254 11229 57.2 894 876 181.0
A 3 137 8094 39.88 894 876 181.0
B 0 190 27170 154.1 890 866 170.7
B 0 229 22640 127.56 890 866 170.7
B 12 111 20631 115.79 890 866 170.7
C 14 238 136310 676.31 859 864 200.3
C 7 247 58219 286.38 859 864 200.3
C 10 9 14659 68.88 859 864 200.3
D 1 52 97967 458.12 874 850 212.0
D 13 104 61273 285.03 874 850 212.0
D 12 233 47925 222.06 874 850 212.0

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