ASTROSAT CZTI

Data Quality Report

Orbit 15169

Creation date: 2024-06-27T17:04:41.025185
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_218T08_9000002236_15169cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15169cztM0_level2_quad_clean.evt
Size (bytes)467,136,000104,906,880
Size445.5 MB 100.0 MB
Events in quadrant A3,909,720675,568
Events in quadrant B3,483,416703,629
Events in quadrant C3,269,753702,290
Events in quadrant D3,056,498655,942

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159863
B0144062
C0134592
D0133432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301711.126805%
B63011191.888589%
C6301150.238057%
D6301260.412633%

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 7702 6304 13 13 0.17% 0.21%
B 7702 6304 42 42 0.55% 0.67%
C 7702 6304 0 0 0.00% 0.00%
D 7702 6304 6 6 0.08% 0.10%

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 15 239 463958 2973.8 781 765 155.8
A 0 253 315502 2020.68 781 765 155.8
A 12 189 75882 482.27 781 765 155.8
B 3 64 209621 1417.14 798 777 147.4
B 0 189 76735 515.42 798 777 147.4
B 0 197 22206 145.41 798 777 147.4
C 3 233 190877 1071.24 782 788 177.4
C 9 236 20138 109.05 782 788 177.4
C 10 22 11150 58.39 782 788 177.4
D 2 16 74173 400.46 764 742 183.4
D 2 33 24503 129.58 764 742 183.4
D 2 152 24433 129.2 764 742 183.4

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