ASTROSAT CZTI

Data Quality Report

Orbit 31120

Creation date: 2024-06-27T20:23:36.139106
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/AS1A10_109T01_9000004492_31120cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31120cztM0_level2_quad_clean.evt
Size (bytes)575,709,12093,312,000
Size549.0 MB 89.0 MB
Events in quadrant A3,615,012613,587
Events in quadrant B5,269,711606,795
Events in quadrant C4,244,755584,846
Events in quadrant D3,876,885578,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148232
B0197892
C0169232
D0156222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63331382.179062%
B63342283.599621%
C63333725.873993%
D63331191.879046%

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 8753 6335 0 0 0.00% 0.00%
B 8754 6336 1 1 0.01% 0.02%
C 8753 6335 86 86 0.98% 1.36%
D 8753 6335 2 2 0.02% 0.03%

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 10895 54.11 937 925 184.3
A 3 137 8899 43.28 937 925 184.3
A 0 226 7919 37.96 937 925 184.3
B 6 159 1637560 9627.97 912 893 170.0
B 0 183 24073 136.36 912 893 170.0
B 12 111 20434 114.95 912 893 170.0
C 0 10 367762 1806.65 879 890 203.1
C 10 22 281724 1382.96 879 890 203.1
C 14 238 142763 698.65 879 890 203.1
D 8 195 397511 1871.32 908 889 211.9
D 12 218 28602 130.75 908 889 211.9
D 2 234 22679 102.81 908 889 211.9

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