ASTROSAT CZTI

Data Quality Report

Orbit 33728

Creation date: 2024-06-27T20:51:52.816999
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/AS1A11_086T01_9000004816_33728cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33728cztM0_level2_quad_clean.evt
Size (bytes)435,038,40093,916,800
Size414.9 MB 89.6 MB
Events in quadrant A2,496,354627,782
Events in quadrant B3,172,972631,656
Events in quadrant C3,041,837641,994
Events in quadrant D4,129,217596,721

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104133
B0126782
C0121502
D0156622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493040.081136%
B49301152.332657%
C4930881.784990%
D49301743.529412%

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 7053 4931 0 0 0.00% 0.00%
B 7053 4931 90 90 1.28% 1.83%
C 7053 4931 60 60 0.85% 1.22%
D 7053 4931 169 169 2.40% 3.43%

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 18140 138.7 635 625 126.3
A 14 4 14883 112.91 635 625 126.3
A 10 83 9194 67.86 635 625 126.3
B 5 172 443252 3737.84 635 621 118.4
B 0 245 84028 704.34 635 621 118.4
B 0 219 41047 341.38 635 621 118.4
C 0 10 264644 1848.74 630 640 142.8
C 15 214 216966 1514.86 630 640 142.8
C 9 54 51400 355.46 630 640 142.8
D 8 195 758053 4600.13 614 604 164.7
D 2 250 304953 1848.37 614 604 164.7
D 13 249 217988 1320.21 614 604 164.7

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