ASTROSAT CZTI

Data Quality Report

Orbit 08891

Creation date: 2024-06-27T15:38:38.571036
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/AS1A03_092T01_9000001240_08891cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08891cztM0_level2_quad_clean.evt
Size (bytes)542,450,880102,600,000
Size517.3 MB 97.8 MB
Events in quadrant A3,771,514664,283
Events in quadrant B3,579,186665,385
Events in quadrant C3,465,966647,158
Events in quadrant D5,111,932617,991

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01522
B01522
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016202156
B015812243
C015786131
D020169261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7368680.922910%
B7347761.034436%
C7377340.460892%
D73473865.253845%

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 7687 7431 6 6 0.08% 0.08%
B 7687 7425 3 3 0.04% 0.04%
C 7687 7436 0 0 0.00% 0.00%
D 7687 7423 274 274 3.56% 3.69%

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 8 5 339937 1888.75 873 855 179.5
A 15 174 22526 120.71 873 855 179.5
A 13 164 18680 99.29 873 855 179.5
B 0 214 36503 212.4 871 850 167.9
B 0 213 30575 177.09 871 850 167.9
B 0 219 24781 142.57 871 850 167.9
C 9 68 185435 954.89 834 837 193.3
C 8 128 12389 59.76 834 837 193.3
C 8 112 6828 30.99 834 837 193.3
D 1 52 693708 3195.73 817 798 216.8
D 8 195 592142 2727.3 817 798 216.8
D 7 71 408598 1880.79 817 798 216.8

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