ASTROSAT CZTI

Data Quality Report

Orbit 34475

Creation date: 2024-06-27T21:00:55.294303
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_071T13_9000004922_34475cztM0_level2.evt modeM0/AS1A10_071T13_9000004922_34475cztM0_level2_quad_clean.evt
Size (bytes)1,494,141,120193,199,040
Size1.4 GB 184.2 MB
Events in quadrant A8,688,3611,195,468
Events in quadrant B9,309,9621,216,717
Events in quadrant C8,764,0211,203,362
Events in quadrant D17,364,1281,085,488

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366837
B0383795
C0360595
D0629775

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166741470.881612%
B166744152.488905%
C16674480.287873%
D16674235314.111791%

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 32237 16678 99 99 0.31% 0.59%
B 32237 16678 252 252 0.78% 1.51%
C 32237 16678 27 27 0.08% 0.16%
D 32237 16677 2135 2135 6.62% 12.80%

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 15 169 679861 1725.64 1973 1935 392.9
A 9 143 120485 301.76 1973 1935 392.9
A 7 16 104254 260.45 1973 1935 392.9
B 5 172 1195021 3198.44 1944 1890 373.0
B 0 189 144779 383.04 1944 1890 373.0
B 5 255 108937 286.96 1944 1890 373.0
C 15 214 704122 1588.99 1912 1931 441.9
C 14 67 276081 620.37 1912 1931 441.9
C 0 10 149261 333.39 1912 1931 441.9
D 7 223 5200747 11953.29 1778 1728 434.9
D 8 195 1959596 4501.42 1778 1728 434.9
D 14 52 1144181 2626.66 1778 1728 434.9

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