ASTROSAT CZTI

Data Quality Report

Orbit 41679

Creation date: 2024-06-27T22:31:25.950662
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/AS1A12_044T21_9000005688_41679cztM0_level2.fits modeM0/AS1A12_044T21_9000005688_41679cztM0_level2_quad_clean.evt
Size (bytes)177,252,48052,583,040
Size169.0 MB 50.1 MB
Events in quadrant A1,776,137352,394
Events in quadrant B1,361,611360,079
Events in quadrant C1,555,366340,833
Events in quadrant D1,627,989321,120

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072351
B061441
C065451
D070431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A305980.261523%
B305950.163452%
C3059471.536450%
D3059240.784570%

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 5182 3060 3 3 0.06% 0.10%
B 5182 3060 0 0 0.00% 0.00%
C 5182 3060 42 42 0.81% 1.37%
D 5182 3060 19 19 0.37% 0.62%

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 292973 4115.93 339 333 71.1
A 15 223 144669 2030.06 339 333 71.1
A 2 79 20205 279.5 339 333 71.1
B 0 245 15117 221.05 338 330 66.9
B 0 190 13992 204.23 338 330 66.9
B 12 111 8275 118.77 338 330 66.9
C 0 10 134493 1697.2 331 333 79.0
C 15 214 123944 1563.75 331 333 79.0
C 15 111 5720 68.15 331 333 79.0
D 13 249 224142 2701.95 331 322 82.8
D 2 249 65841 790.94 331 322 82.8
D 12 6 35089 419.71 331 322 82.8

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