ASTROSAT CZTI

Data Quality Report

Orbit 34466

Creation date: 2022-02-12T09:38:36.154974
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_058T06_9000004920_34466cztM0_level2.evt modeM0/AS1A10_058T06_9000004920_34466cztM0_level2_quad_clean.evt
Size (bytes)534,464,64062,046,720
Size509.7 MB 59.2 MB
Events in quadrant A2,876,199393,204
Events in quadrant B3,070,988394,285
Events in quadrant C4,130,564373,403
Events in quadrant D5,756,302352,721

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116813
B0122522
C0157442
D0209602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5217360.690052%
B52171062.031819%
C52174338.299789%
D52171853.546099%

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 7340 5218 25 25 0.34% 0.48%
B 7340 5218 64 64 0.87% 1.23%
C 7340 5218 366 366 4.99% 7.01%
D 7340 5218 159 159 2.17% 3.05%

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 15 169 51159 361.35 705 695 139.7
A 10 83 38091 267.77 705 695 139.7
A 13 6 27784 193.97 705 695 139.7
B 5 172 311491 2382.93 694 678 130.4
B 4 232 25591 191.0 694 678 130.4
B 12 111 14874 108.84 694 678 130.4
C 15 208 1271539 8700.17 643 649 146.1
C 15 214 210169 1434.32 643 649 146.1
C 14 67 60461 409.46 643 649 146.1
D 8 195 1725352 10526.49 668 650 163.8
D 1 52 796239 4855.77 668 650 163.8
D 2 250 205957 1253.06 668 650 163.8

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