ASTROSAT CZTI

Data Quality Report

Orbit 34712

Creation date: 2022-03-02T16:32:54.847453
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/AS1A09_038T41_9000004978_34712cztM0_level2.evt modeM0/AS1A09_038T41_9000004978_34712cztM0_level2_quad_clean.evt
Size (bytes)73,667,52018,311,040
Size70.3 MB 17.5 MB
Events in quadrant A647,465123,852
Events in quadrant B523,709126,664
Events in quadrant C504,735125,171
Events in quadrant D500,361117,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024842
B019651
C020261
D019841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A759121.581028%
B759385.006588%
C759101.317523%
D75910.131752%

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 759 759 5 5 0.66% 0.66%
B 759 759 23 23 3.03% 3.03%
C 759 759 14 14 1.84% 1.84%
D 759 759 0 0 0.00% 0.00%

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 220023 9603.02 104 102 22.9
A 10 83 19233 835.37 104 102 22.9
A 13 6 1370 55.37 104 102 22.9
B 5 172 88313 4177.11 103 101 21.1
B 0 155 27886 1315.71 103 101 21.1
B 4 171 3604 165.88 103 101 21.1
C 0 10 55147 2144.27 104 105 25.7
C 15 214 36399 1413.91 104 105 25.7
C 7 173 1598 58.16 104 105 25.7
D 8 195 100481 3777.17 103 100 26.6
D 2 234 2733 99.08 103 100 26.6
D 3 238 2723 98.7 103 100 26.6

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