ASTROSAT CZTI

Data Quality Report

Orbit 47255

Creation date: 2024-06-27T23:33:28.123507
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/AS1C09_005T01_9000006304_47255cztM0_level2.fits modeM0/AS1C09_005T01_9000006304_47255cztM0_level2_quad_clean.evt
Size (bytes)505,391,040104,590,080
Size482.0 MB 99.7 MB
Events in quadrant A7,332,854666,444
Events in quadrant B3,212,362734,032
Events in quadrant C2,847,344702,164
Events in quadrant D4,815,690614,414

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259712
B0138322
C0132002
D0188922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64435728.877852%
B6443520.807077%
C6443260.403539%
D64434296.658389%

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 7558 6444 349 349 4.62% 5.42%
B 7558 6444 13 13 0.17% 0.20%
C 7558 6444 15 15 0.20% 0.23%
D 7558 6444 346 346 4.58% 5.37%

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 10 83 3537959 24615.72 696 681 143.7
A 9 191 1061488 7382.1 696 681 143.7
A 15 235 20474 137.74 696 681 143.7
B 0 200 164836 1189.03 714 693 138.0
B 0 190 69070 495.31 714 693 138.0
B 5 32 36806 261.6 714 693 138.0
C 14 254 64527 386.59 705 706 165.1
C 8 111 16553 95.99 705 706 165.1
C 3 233 10912 61.82 705 706 165.1
D 12 1 1947997 11398.5 679 658 170.8
D 5 171 99545 578.82 679 658 170.8
D 12 233 47422 273.73 679 658 170.8

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