ASTROSAT CZTI

Data Quality Report

Orbit 32312

Creation date: 2024-06-27T20:38:45.176803
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_005T01_9000004700_32312cztM0_level2.evt modeM0/AS1A10_005T01_9000004700_32312cztM0_level2_quad_clean.evt
Size (bytes)658,203,84078,756,480
Size627.7 MB 75.1 MB
Events in quadrant A3,590,364488,854
Events in quadrant B5,918,771478,474
Events in quadrant C4,066,675460,396
Events in quadrant D5,864,809448,916

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153343
B0226712
C0166442
D0227682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72941472.015355%
B72942753.770222%
C72943594.921854%
D72942803.838772%

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 7709 7295 2 2 0.03% 0.03%
B 7709 7295 12 12 0.16% 0.16%
C 7709 7295 18 18 0.23% 0.25%
D 7709 7295 125 125 1.62% 1.71%

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 12 189 59579 322.97 899 878 181.8
A 0 6 23912 126.73 899 878 181.8
A 13 6 19397 101.89 899 878 181.8
B 6 159 2123566 12500.28 887 864 169.8
B 0 168 95379 556.58 887 864 169.8
B 0 190 59468 345.11 887 864 169.8
C 3 233 295444 1461.36 859 863 201.6
C 14 238 168324 830.74 859 863 201.6
C 0 10 97534 479.57 859 863 201.6
D 8 195 2047837 9934.43 865 842 206.1
D 13 249 376567 1823.46 865 842 206.1
D 2 234 35669 169.02 865 842 206.1

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