ASTROSAT CZTI

Data Quality Report

Orbit 37543

Creation date: 2024-06-27T21:41:19.465986
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/AS1T05_051T01_9000005334_37543cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37543cztM0_level2_quad_clean.evt
Size (bytes)734,863,680119,900,160
Size700.8 MB 114.3 MB
Events in quadrant A6,883,899758,929
Events in quadrant B4,556,081788,990
Events in quadrant C4,081,991797,060
Events in quadrant D6,188,465726,255

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283
B0274
C0283
D0283

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331687437
B0224183644
C0208283608
D0294875723

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020129
B020132
C020236
D020127

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78655136.522568%
B81541932.366936%
C8118320.394186%
D79524786.011066%

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 12665 8412 391 391 3.09% 4.65%
B 12672 8709 130 130 1.03% 1.49%
C 12671 8693 26 26 0.21% 0.30%
D 12669 8543 451 451 3.56% 5.28%

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 15 222 2881925 16192.2 874 857 177.9
A 10 83 392294 2199.96 874 857 177.9
A 6 10 124178 693.09 874 857 177.9
B 5 172 365733 2088.81 910 887 174.7
B 4 81 151358 861.47 910 887 174.7
B 0 245 137067 779.66 910 887 174.7
C 15 214 346941 1676.84 887 894 206.4
C 14 254 137534 662.12 887 894 206.4
C 0 10 59668 284.8 887 894 206.4
D 2 249 1178800 5709.19 844 822 206.3
D 12 235 889640 4307.75 844 822 206.3
D 12 233 183226 884.04 844 822 206.3

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