ASTROSAT CZTI

Data Quality Report

Orbit 14766

Creation date: 2024-06-27T16:59:26.734693
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/AS1A04_022T06_9000002182_14766cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14766cztM0_level2_quad_clean.evt
Size (bytes)621,817,92076,098,240
Size593.0 MB 72.6 MB
Events in quadrant A5,681,047449,674
Events in quadrant B3,445,780475,301
Events in quadrant C5,780,134450,060
Events in quadrant D3,474,410465,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216723
B0144062
C0216582
D0147752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A664491913.832029%
B66441311.971704%
C664494114.163155%
D66441352.031908%

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 7535 6646 802 802 10.64% 12.07%
B 7535 6646 6 6 0.08% 0.09%
C 7535 6646 647 647 8.59% 9.74%
D 7535 6646 28 28 0.37% 0.42%

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 14 237 2033833 12254.83 815 796 165.9
A 0 23 321357 1932.29 815 796 165.9
A 12 189 124857 747.82 815 796 165.9
B 0 190 42384 260.65 838 818 159.5
B 4 142 34641 212.1 838 818 159.5
B 0 219 23309 141.04 838 818 159.5
C 4 254 2314470 13207.26 763 765 175.2
C 3 233 354185 2017.42 763 765 175.2
C 0 207 113186 641.73 763 765 175.2
D 2 136 131416 655.53 817 798 199.3
D 8 195 74666 370.72 817 798 199.3
D 2 120 69478 344.68 817 798 199.3

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