ASTROSAT CZTI

Data Quality Report

Orbit 34966

Creation date: 2024-06-27T21:07:32.447121
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/AS1A11_047T09_9000005010_34966cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34966cztM0_level2_quad_clean.evt
Size (bytes)1,309,046,400218,799,360
Size1.2 GB 208.7 MB
Events in quadrant A8,340,4811,400,192
Events in quadrant B9,683,3911,405,400
Events in quadrant C8,290,2721,401,069
Events in quadrant D12,235,5681,300,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351445
B0391614
C0340104
D0476194

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162241350.832101%
B162245373.309911%
C16224790.486933%
D162244963.057199%

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 21714 16228 105 105 0.48% 0.65%
B 21714 16228 380 380 1.75% 2.34%
C 21714 16228 47 47 0.22% 0.29%
D 21714 16228 436 436 2.01% 2.69%

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 15 223 784586 2065.5 1889 1850 379.0
A 10 83 166475 434.42 1889 1850 379.0
A 13 254 29175 72.11 1889 1850 379.0
B 5 172 1954213 5445.64 1861 1810 358.5
B 0 190 229785 635.87 1861 1810 358.5
B 5 31 46538 124.75 1861 1810 358.5
C 15 214 671696 1577.51 1839 1856 424.6
C 0 10 212400 495.84 1839 1856 424.6
C 12 250 87574 201.87 1839 1856 424.6
D 8 195 2591426 5788.3 1825 1774 447.4
D 13 249 872870 1947.04 1825 1774 447.4
D 10 118 410026 912.51 1825 1774 447.4

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