ASTROSAT CZTI

Data Quality Report

Orbit 35608

Creation date: 2022-04-30T00:54:22.533457
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/AS1A10_065T04_9000005098_35608cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35608cztM0_level2_quad_clean.evt
Size (bytes)498,709,44065,767,680
Size475.6 MB 62.7 MB
Events in quadrant A2,507,247445,903
Events in quadrant B4,320,580410,526
Events in quadrant C3,192,944425,606
Events in quadrant D4,741,265355,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105823
B0161202
C0125522
D0174122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A502960.119308%
B502959811.891032%
C50291933.837741%
D502972414.396500%

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 7002 5030 0 0 0.00% 0.00%
B 7002 5030 473 473 6.76% 9.40%
C 7002 5030 144 144 2.06% 2.86%
D 7002 5030 605 605 8.64% 12.03%

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 138446 1125.36 608 595 122.5
A 13 6 13312 103.82 608 595 122.5
A 3 137 6066 44.66 608 595 122.5
B 5 172 1552981 14191.97 575 559 109.4
B 5 200 144893 1319.48 575 559 109.4
B 4 81 140395 1278.36 575 559 109.4
C 0 10 433944 3215.85 584 590 134.8
C 12 249 209695 1551.73 584 590 134.8
C 15 214 206213 1525.89 584 590 134.8
D 7 80 1819182 13637.88 544 529 133.4
D 2 249 213259 1595.24 544 529 133.4
D 12 233 127017 948.52 544 529 133.4

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