ASTROSAT CZTI

Data Quality Report

Orbit 43741

Creation date: 2024-06-27T22:55:14.456408
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/AS1A13_003T01_9000005902_43741cztM0_level2.fits modeM0/AS1A13_003T01_9000005902_43741cztM0_level2_quad_clean.evt
Size (bytes)621,144,000119,862,720
Size592.4 MB 114.3 MB
Events in quadrant A4,764,375825,873
Events in quadrant B5,351,830805,103
Events in quadrant C5,126,035790,618
Events in quadrant D7,152,812671,401

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191881
B0212321
C0205461
D0266151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77061301.686997%
B77065907.656372%
C77074475.799922%
D770698612.795225%

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 7896 7707 61 61 0.77% 0.79%
B 7896 7706 358 358 4.53% 4.65%
C 7897 7708 285 285 3.61% 3.70%
D 7896 7707 614 614 7.78% 7.97%

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 903863 4983.54 860 839 181.2
A 15 223 239624 1317.79 860 839 181.2
A 15 174 111032 608.12 860 839 181.2
B 5 235 1486221 9065.74 833 804 163.8
B 0 200 189978 1154.56 833 804 163.8
B 4 80 174443 1059.75 833 804 163.8
C 15 174 835594 4253.5 826 829 196.3
C 15 158 674562 3432.97 826 829 196.3
C 15 157 134040 678.77 826 829 196.3
D 4 212 1316349 6385.82 802 777 206.0
D 8 48 476074 2307.1 802 777 206.0
D 5 235 406529 1969.53 802 777 206.0

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