ASTROSAT CZTI

Data Quality Report

Orbit 11168

Creation date: 2024-06-27T16:09:16.195016
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/AS1A04_042T01_9000001630_11168cztM0_level2.evt modeM0/AS1A04_042T01_9000001630_11168cztM0_level2_quad_clean.evt
Size (bytes)1,591,894,080193,199,040
Size1.5 GB 184.2 MB
Events in quadrant A13,034,0761,159,192
Events in quadrant B10,915,8941,205,640
Events in quadrant C7,474,8581,214,166
Events in quadrant D15,643,2291,100,503

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03522
C03524
D03522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203
B0203
C0203
D0203

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050809695
B044304752
C034941469
D0596421113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1696112907.605684%
B169667334.320406%
C16994520.305990%
D169268064.761905%

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 19265 17035 787 787 4.09% 4.62%
B 19249 17032 350 350 1.82% 2.05%
C 19255 17071 0 0 0.00% 0.00%
D 19242 16999 864 864 4.49% 5.08%

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 2715582 6976.47 1910 1867 389.0
A 8 5 1911108 4908.32 1910 1867 389.0
A 8 15 980350 2515.5 1910 1867 389.0
B 4 239 1433819 3857.05 1951 1904 371.2
B 10 16 721599 1938.59 1951 1904 371.2
B 11 51 284590 761.45 1951 1904 371.2
C 13 61 14510 28.23 1912 1920 445.9
C 14 234 10939 20.22 1912 1920 445.9
C 5 128 7309 12.08 1912 1920 445.9
D 10 157 6982193 15409.35 1869 1815 453.0
D 2 14 457300 1005.49 1869 1815 453.0
D 1 52 294897 646.98 1869 1815 453.0

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