ASTROSAT CZTI

Data Quality Report

Orbit 08857

Creation date: 2024-06-27T15:38:07.917398
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/AS1A03_036T01_9000001230_08857cztM0_level2.evt modeM0/AS1A03_036T01_9000001230_08857cztM0_level2_quad_clean.evt
Size (bytes)433,460,16094,389,120
Size413.4 MB 90.0 MB
Events in quadrant A3,444,010624,007
Events in quadrant B3,088,556628,045
Events in quadrant C2,666,208613,357
Events in quadrant D3,544,014597,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139452
B0129511
C0116681
D0144441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56651562.753751%
B5665911.606355%
C5665591.041483%
D5665661.165049%

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 6940 5665 51 51 0.73% 0.90%
B 6940 5665 27 27 0.39% 0.48%
C 6940 5665 2 2 0.03% 0.04%
D 6940 5665 12 12 0.17% 0.21%

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 8 5 717226 5183.28 693 679 138.2
A 15 174 31624 223.85 693 679 138.2
A 3 1 14758 101.84 693 679 138.2
B 0 214 144401 1102.4 694 679 130.4
B 10 16 96856 737.71 694 679 130.4
B 0 230 27495 205.69 694 679 130.4
C 1 3 27401 173.4 674 677 154.1
C 13 61 5230 29.54 674 677 154.1
C 14 234 3750 19.94 674 677 154.1
D 8 195 605155 3331.43 675 659 181.5
D 2 152 100786 551.81 675 659 181.5
D 7 71 75574 412.86 675 659 181.5

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