ASTROSAT CZTI

Data Quality Report

Orbit 31102

Creation date: 2024-06-27T20:23:23.354719
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_31102cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31102cztM0_level2_quad_clean.evt
Size (bytes)562,674,24072,334,080
Size536.6 MB 69.0 MB
Events in quadrant A3,297,922446,278
Events in quadrant B5,140,563441,346
Events in quadrant C3,522,745424,169
Events in quadrant D4,631,321416,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137702
B0200374
C0144242
D0181402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6622540.815464%
B66211101.661380%
C66211462.205105%
D66211342.023863%

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 7602 6623 0 0 0.00% 0.00%
B 7601 6622 5 5 0.07% 0.08%
C 7601 6622 19 19 0.25% 0.29%
D 7601 6622 70 70 0.92% 1.06%

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 11029 59.41 853 838 171.5
A 3 137 8827 46.58 853 838 171.5
A 0 226 7349 37.96 853 838 171.5
B 6 159 1782500 11079.81 835 814 160.8
B 0 190 26461 159.49 835 814 160.8
B 10 247 22813 136.81 835 814 160.8
C 0 10 194200 1022.4 804 810 189.2
C 14 238 129744 681.64 804 810 189.2
C 10 22 32787 169.05 804 810 189.2
D 13 174 1293842 6715.67 814 794 192.5
D 8 195 222919 1153.64 814 794 192.5
D 2 234 26299 132.46 814 794 192.5

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