ASTROSAT CZTI

Data Quality Report

Orbit 19801

Creation date: 2024-06-27T18:07:10.451438
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_117T01_9000002958_19801cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19801cztM0_level2_quad_clean.evt
Size (bytes)555,220,800104,140,800
Size529.5 MB 99.3 MB
Events in quadrant A4,033,207687,874
Events in quadrant B3,352,226710,090
Events in quadrant C3,569,211674,257
Events in quadrant D5,441,494650,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159432
B0138152
C0144622
D0203152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61701742.820097%
B61711292.090423%
C61711442.333495%
D617168011.019284%

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 8865 6171 47 47 0.53% 0.76%
B 8866 6172 10 10 0.11% 0.16%
C 8866 6173 1 1 0.01% 0.02%
D 8866 6172 514 514 5.80% 8.33%

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 6 16 830912 4950.06 832 815 167.7
A 0 226 7196 38.05 832 815 167.7
A 3 137 6434 33.51 832 815 167.7
B 7 220 41362 260.1 835 817 155.9
B 0 230 18438 113.04 835 817 155.9
B 12 111 17956 109.95 835 817 155.9
C 3 233 282674 1512.07 810 818 186.4
C 14 238 129069 688.03 810 818 186.4
C 13 61 5663 25.99 810 818 186.4
D 7 238 1410678 7566.33 780 760 186.3
D 1 52 869227 4660.63 780 760 186.3
D 7 96 65985 350.03 780 760 186.3

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