ASTROSAT CZTI

Data Quality Report

Orbit 33931

Creation date: 2024-06-27T20:54:16.303306
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/AS1T04_088T01_9000004844_33931cztM0_level2.evt modeM0/AS1T04_088T01_9000004844_33931cztM0_level2_quad_clean.evt
Size (bytes)451,342,08068,155,200
Size430.4 MB 65.0 MB
Events in quadrant A2,459,603453,808
Events in quadrant B3,322,086440,434
Events in quadrant C3,641,236416,789
Events in quadrant D3,918,449413,580

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100992
B0129511
C0138831
D0148021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A483170.144898%
B48311723.560339%
C48313196.603188%
D48311673.456841%

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 6984 4832 0 0 0.00% 0.00%
B 6984 4832 107 107 1.53% 2.21%
C 6984 4832 227 227 3.25% 4.70%
D 6984 4832 115 115 1.65% 2.38%

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 64390 524.96 614 604 121.5
A 10 83 13328 104.72 614 604 121.5
A 13 6 11563 90.19 614 604 121.5
B 5 172 639412 5729.53 594 580 111.5
B 0 219 99161 884.15 594 580 111.5
B 3 112 66378 590.13 594 580 111.5
C 9 187 842225 6515.32 570 575 129.2
C 0 10 234192 1808.46 570 575 129.2
C 15 214 208235 1607.52 570 575 129.2
D 8 195 815563 5616.53 587 571 145.1
D 2 250 335738 2309.81 587 571 145.1
D 13 249 188646 1296.12 587 571 145.1

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