ASTROSAT CZTI

Data Quality Report

Orbit 21678

Creation date: 2024-06-27T18:31:00.504079
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/AS1T03_143T01_9000003208_21678cztM0_level2.evt modeM0/AS1T03_143T01_9000003208_21678cztM0_level2_quad_clean.evt
Size (bytes)457,369,92085,556,160
Size436.2 MB 81.6 MB
Events in quadrant A2,933,247550,382
Events in quadrant B3,271,489562,044
Events in quadrant C2,955,604536,033
Events in quadrant D4,265,464505,032

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127691
B0136931
C0127561
D0169211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626190.143747%
B6262570.910252%
C6262330.526988%
D62622544.056212%

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 7266 6262 0 0 0.00% 0.00%
B 7267 6263 20 20 0.28% 0.32%
C 7267 6263 0 0 0.00% 0.00%
D 7267 6263 217 217 2.99% 3.46%

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 13 254 9215 54.9 760 746 154.3
A 0 226 6679 38.46 760 746 154.3
A 3 137 6203 35.37 760 746 154.3
B 0 189 92826 623.84 767 751 147.6
B 0 229 65848 441.06 767 751 147.6
B 3 64 45265 301.6 767 751 147.6
C 14 238 113144 652.5 727 731 172.3
C 10 22 6329 32.49 727 731 172.3
C 13 61 5232 26.13 727 731 172.3
D 1 20 371540 2099.73 723 701 176.6
D 7 38 339104 1916.08 723 701 176.6
D 1 52 335806 1897.4 723 701 176.6

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