ASTROSAT CZTI

Data Quality Report

Orbit 23368

Creation date: 2024-06-27T18:53:25.807559
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/AS1A07_138T09_9000003458_23368cztM0_level2.evt modeM0/AS1A07_138T09_9000003458_23368cztM0_level2_quad_clean.evt
Size (bytes)639,866,88092,390,400
Size610.2 MB 88.1 MB
Events in quadrant A3,446,589582,066
Events in quadrant B3,681,776586,459
Events in quadrant C6,728,516552,295
Events in quadrant D5,020,615561,927

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151551
B0158271
C0249671
D0200911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7407360.486027%
B7407720.972053%
C74086849.233261%
D74082473.334233%

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 7822 7408 0 0 0.00% 0.00%
B 7822 7408 8 8 0.10% 0.11%
C 7823 7409 276 276 3.53% 3.73%
D 7823 7409 153 153 1.96% 2.07%

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 8 205 14579 76.2 890 871 179.9
A 13 254 10871 55.59 890 871 179.9
A 3 137 8202 40.75 890 871 179.9
B 0 189 131977 774.16 884 862 169.4
B 0 190 38750 223.71 884 862 169.4
B 6 36 21201 120.09 884 862 169.4
C 0 239 3232976 16326.24 842 845 198.0
C 14 238 133429 669.71 842 845 198.0
C 7 247 45251 224.3 842 845 198.0
D 1 52 755631 3604.05 863 838 209.4
D 7 238 710344 3387.81 863 838 209.4
D 13 104 199956 950.77 863 838 209.4

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