ASTROSAT CZTI

Data Quality Report

Orbit 18443

Creation date: 2024-06-27T17:49:54.031761
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/AS1A05_199T01_9000002732_18443cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18443cztM0_level2_quad_clean.evt
Size (bytes)437,172,48091,768,320
Size416.9 MB 87.5 MB
Events in quadrant A3,034,960582,258
Events in quadrant B3,271,891596,536
Events in quadrant C3,074,293576,914
Events in quadrant D3,408,806562,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134821
B0139741
C0134741
D0147421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6606630.953678%
B6607891.347056%
C6607660.998941%
D66071251.891933%

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 7410 6605 8 8 0.11% 0.12%
B 7412 6609 15 15 0.20% 0.23%
C 7411 6606 0 0 0.00% 0.00%
D 7412 6608 84 84 1.13% 1.27%

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 4 2 34719 213.93 780 762 158.7
A 0 226 6783 37.93 780 762 158.7
A 3 137 5972 32.82 780 762 158.7
B 10 245 173628 1157.85 782 761 149.3
B 12 111 18042 115.75 782 761 149.3
B 11 111 15511 98.79 782 761 149.3
C 14 238 116963 658.96 749 752 176.4
C 3 233 32787 181.65 749 752 176.4
C 13 61 5283 25.69 749 752 176.4
D 1 52 422024 2308.99 750 727 182.5
D 12 110 71764 389.33 750 727 182.5
D 13 168 34427 184.7 750 727 182.5

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