ASTROSAT CZTI

Data Quality Report

Orbit 20697

Creation date: 2024-06-27T18:18:31.206754
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/AS1A05_165T07_9000003062_20697cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20697cztM0_level2_quad_clean.evt
Size (bytes)547,364,160123,845,760
Size522.0 MB 118.1 MB
Events in quadrant A3,368,748863,570
Events in quadrant B3,750,901851,995
Events in quadrant C3,328,589809,453
Events in quadrant D5,699,811784,313

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140641
B0152561
C0139972
D0212911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6331751.184647%
B63321452.289956%
C63311191.879640%
D63314557.186858%

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 7591 6332 1 1 0.01% 0.02%
B 7592 6333 40 40 0.53% 0.63%
C 7591 6332 0 0 0.00% 0.00%
D 7591 6331 390 390 5.14% 6.16%

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 0 226 7896 40.2 874 858 175.1
A 5 16 7560 38.28 874 858 175.1
A 3 137 6460 32.0 874 858 175.1
B 7 220 328703 2072.0 848 832 158.2
B 0 190 38831 240.14 848 832 158.2
B 0 229 22278 135.53 848 832 158.2
C 14 238 130655 696.6 816 824 186.4
C 7 247 12778 64.14 816 824 186.4
C 13 61 5811 26.76 816 824 186.4
D 5 222 2143708 10831.47 830 806 197.8
D 7 38 144647 727.06 830 806 197.8
D 1 52 67103 335.1 830 806 197.8

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