ASTROSAT CZTI

Data Quality Report

Orbit 11945

Creation date: 2024-06-27T16:20:24.663715
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/AS1A04_124T01_9000001766_11945cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11945cztM0_level2_quad_clean.evt
Size (bytes)507,954,240120,804,480
Size484.4 MB 115.2 MB
Events in quadrant A3,419,672807,102
Events in quadrant B3,995,259818,885
Events in quadrant C2,906,418803,421
Events in quadrant D4,601,069756,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147302
B0165981
C0138241
D0185761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67911101.619791%
B67912754.049477%
C6791200.294507%
D67912133.136504%

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 7072 6793 4 4 0.06% 0.06%
B 7072 6794 133 133 1.88% 1.96%
C 7072 6794 0 0 0.00% 0.00%
D 7072 6793 109 109 1.54% 1.60%

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 1 162 136460 868.13 765 750 156.3
A 7 144 82761 524.62 765 750 156.3
A 1 178 73575 465.86 765 750 156.3
B 4 239 708904 4824.58 765 744 146.8
B 15 204 115023 778.56 765 744 146.8
B 11 51 69553 468.78 765 744 146.8
C 0 10 6707 34.88 741 743 171.0
C 13 61 5499 27.82 741 743 171.0
C 8 128 3921 18.59 741 743 171.0
D 1 52 756253 4269.74 729 706 177.0
D 13 122 605620 3418.49 729 706 177.0
D 8 195 224529 1264.87 729 706 177.0

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