ASTROSAT CZTI

Data Quality Report

Orbit 36414

Creation date: 2022-06-25T13:20:41.282410
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/AS1T04_084T01_9000005198_36414cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36414cztM0_level2_quad_clean.evt
Size (bytes)1,414,949,760176,440,320
Size1.3 GB 168.3 MB
Events in quadrant A7,927,3541,089,512
Events in quadrant B11,330,4461,080,120
Events in quadrant C8,402,6911,081,478
Events in quadrant D14,095,860971,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339745
B0445784
C0346274
D0529404

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16239280.172424%
B1623910626.539812%
C162391590.979124%
D16239214513.208941%

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 21697 16243 1 1 0.00% 0.01%
B 21697 16243 668 668 3.08% 4.11%
C 21697 16243 92 92 0.42% 0.57%
D 21697 16243 1863 1863 8.59% 11.47%

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 465371 1223.97 1877 1837 378.7
A 15 223 81281 209.77 1877 1837 378.7
A 12 189 56566 144.51 1877 1837 378.7
B 5 172 2404736 6890.53 1813 1763 348.7
B 5 255 743340 2126.47 1813 1763 348.7
B 5 236 347942 992.67 1813 1763 348.7
C 15 214 688381 1634.68 1811 1821 420.0
C 0 10 625842 1485.77 1811 1821 420.0
C 0 207 17463 37.24 1811 1821 420.0
D 2 249 4303488 10196.02 1716 1667 421.9
D 12 227 1808414 4282.29 1716 1667 421.9
D 2 250 410243 968.39 1716 1667 421.9

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