ASTROSAT CZTI

Data Quality Report

Orbit 16316

Creation date: 2024-06-27T17:20:56.274272
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_096T04_9000002406_16316cztM0_level2.evt modeM0/AS1A05_096T04_9000002406_16316cztM0_level2_quad_clean.evt
Size (bytes)532,293,12099,717,120
Size507.6 MB 95.1 MB
Events in quadrant A4,480,252616,053
Events in quadrant B3,903,317641,059
Events in quadrant C3,650,745626,096
Events in quadrant D3,583,689621,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182132
B0162041
C0153751
D0156851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74054345.860905%
B74051912.579338%
C74051732.336259%
D74051461.971641%

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 7786 7406 202 202 2.59% 2.73%
B 7786 7407 13 13 0.17% 0.18%
C 7786 7406 0 0 0.00% 0.00%
D 7786 7407 20 20 0.26% 0.27%

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 15 174 1112034 6307.54 872 852 176.2
A 3 1 11285 59.22 872 852 176.2
A 0 226 7706 38.91 872 852 176.2
B 10 16 111462 650.16 886 861 170.1
B 0 198 61589 356.98 886 861 170.1
B 0 228 51967 300.42 886 861 170.1
C 14 238 132781 662.46 861 864 199.1
C 3 233 122307 609.87 861 864 199.1
C 0 207 26804 130.27 861 864 199.1
D 10 70 100426 460.98 873 850 216.0
D 12 110 67603 309.03 873 850 216.0
D 1 52 44379 201.51 873 850 216.0

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