ASTROSAT CZTI

Data Quality Report

Orbit 27893

Creation date: 2024-06-27T19:45:40.854006
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_048T01_9000004028_27893cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27893cztM0_level2_quad_clean.evt
Size (bytes)1,613,525,760302,639,040
Size1.5 GB 288.6 MB
Events in quadrant A10,805,5002,018,717
Events in quadrant B10,477,2532,032,182
Events in quadrant C10,162,3691,902,880
Events in quadrant D16,078,3251,841,510

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0449060
B0436180
C0427410
D0614330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199192351.179778%
B199202321.164659%
C199203081.546185%
D1992010165.100402%

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 32953 19920 10 10 0.03% 0.05%
B 32954 19921 6 6 0.02% 0.03%
C 32954 19921 0 0 0.00% 0.00%
D 32954 19921 809 809 2.45% 4.06%

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 6 16 729507 1418.4 2599 2552 512.5
A 4 2 32926 59.26 2599 2552 512.5
A 13 254 30700 54.92 2599 2552 512.5
B 0 230 209219 432.77 2574 2519 477.6
B 10 245 136383 280.27 2574 2519 477.6
B 12 111 58266 116.72 2574 2519 477.6
C 14 238 398415 700.55 2450 2471 565.2
C 3 233 142368 247.52 2450 2471 565.2
C 6 112 66245 112.84 2450 2471 565.2
D 1 52 3607826 6251.83 2455 2390 576.7
D 13 104 1588128 2749.67 2455 2390 576.7
D 7 238 857356 1482.51 2455 2390 576.7

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