ASTROSAT CZTI

Data Quality Report

Orbit 15369

Creation date: 2024-06-27T17:07:39.512901
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/AS1G08_037T01_9000002264_15369cztM0_level2.evt modeM0/AS1G08_037T01_9000002264_15369cztM0_level2_quad_clean.evt
Size (bytes)495,593,28086,446,080
Size472.6 MB 82.4 MB
Events in quadrant A3,304,270553,256
Events in quadrant B3,801,021554,817
Events in quadrant C3,781,533542,866
Events in quadrant D3,683,958516,472

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138763
B0152832
C0151552
D0151072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6454951.471955%
B64542233.455222%
C6454951.471955%
D64541582.448094%

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 7585 6455 2 2 0.03% 0.03%
B 7585 6455 90 90 1.19% 1.39%
C 7585 6455 0 0 0.00% 0.00%
D 7585 6455 56 56 0.74% 0.87%

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 9 143 26528 150.54 851 835 170.7
A 0 226 7871 41.23 851 835 170.7
A 12 194 6296 32.0 851 835 170.7
B 10 245 368640 2302.94 841 821 159.7
B 0 229 44719 274.85 841 821 159.7
B 0 182 28249 171.73 841 821 159.7
C 3 233 598407 3204.39 815 823 186.5
C 13 61 5934 27.41 815 823 186.5
C 5 96 5126 23.07 815 823 186.5
D 2 33 196900 976.0 819 795 200.9
D 9 68 195403 968.55 819 795 200.9
D 1 255 80013 394.26 819 795 200.9

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