ASTROSAT CZTI

Data Quality Report

Orbit 20175

Creation date: 2024-06-27T18:12:04.187573
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/AS1C04_001T01_9000002994_20175cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20175cztM0_level2_quad_clean.evt
Size (bytes)692,072,640125,729,280
Size660.0 MB 119.9 MB
Events in quadrant A6,787,456792,936
Events in quadrant B3,429,138900,274
Events in quadrant C4,066,881856,007
Events in quadrant D6,238,044805,878

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244772
B0142872
C0165242
D0229452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480144022.222222%
B6480590.910494%
C6481981.512112%
D64814957.637710%

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 7685 6481 951 951 12.37% 14.67%
B 7685 6481 21 21 0.27% 0.32%
C 7686 6482 7 7 0.09% 0.11%
D 7686 6482 390 390 5.07% 6.02%

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 14 238 4023892 27888.3 717 702 144.3
A 13 254 7772 49.01 717 702 144.3
A 0 226 6156 37.81 717 702 144.3
B 7 220 194491 1301.19 791 772 148.9
B 0 197 60166 398.94 791 772 148.9
B 0 189 29345 191.92 791 772 148.9
C 3 233 999118 5728.35 753 758 174.3
C 14 238 119232 679.78 753 758 174.3
C 5 4 15940 87.11 753 758 174.3
D 1 52 2883683 16193.93 740 719 178.0
D 1 20 265191 1485.57 740 719 178.0
D 5 222 98342 548.36 740 719 178.0

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