ASTROSAT CZTI

Data Quality Report

Orbit 34416

Creation date: 2022-02-08T15:57:51.659267
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/AS1A05_108T02_9000004914_34416cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34416cztM0_level2_quad_clean.evt
Size (bytes)1,354,645,440169,096,320
Size1.3 GB 161.3 MB
Events in quadrant A7,119,9621,046,039
Events in quadrant B9,150,5781,044,048
Events in quadrant C10,070,2481,033,180
Events in quadrant D13,673,695961,902

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308444
B0367463
C0389703
D0512953

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15005680.453182%
B150055663.772076%
C150055153.432189%
D1500513789.183605%

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 20464 15009 48 48 0.23% 0.32%
B 20464 15009 377 377 1.84% 2.51%
C 20464 15009 440 440 2.15% 2.93%
D 20464 15009 1072 1072 5.24% 7.14%

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 201937 569.8 1761 1724 351.4
A 10 83 66527 184.43 1761 1724 351.4
A 13 254 28668 76.68 1761 1724 351.4
B 5 172 1355479 4057.7 1735 1690 333.6
B 0 229 373197 1113.51 1735 1690 333.6
B 4 171 207407 616.59 1735 1690 333.6
C 4 254 2257968 5736.19 1704 1717 393.3
C 15 214 615077 1559.38 1704 1717 393.3
C 14 67 351753 889.92 1704 1717 393.3
D 2 249 2231824 5467.02 1663 1616 407.9
D 8 195 1872831 4587.01 1663 1616 407.9
D 1 47 909453 2225.43 1663 1616 407.9

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