ASTROSAT CZTI

Data Quality Report

Orbit 15222

Creation date: 2024-06-27T17:05:30.839340
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_105T01_9000002248_15222cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15222cztM0_level2_quad_clean.evt
Size (bytes)705,378,24093,395,520
Size672.7 MB 89.1 MB
Events in quadrant A4,703,855615,694
Events in quadrant B8,431,584555,382
Events in quadrant C4,763,837626,545
Events in quadrant D3,055,158608,127

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180692
B0292261
C0186311
D0131561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A604366310.971372%
B6043209034.585471%
C6043661.092173%
D60431212.002317%

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 7034 6044 391 391 5.56% 6.47%
B 7034 6044 1552 1552 22.06% 25.68%
C 7034 6044 1 1 0.01% 0.02%
D 7034 6044 50 50 0.71% 0.83%

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 0 253 1788723 11906.46 733 717 150.2
A 12 189 86888 573.82 733 717 150.2
A 9 143 7955 48.2 733 717 150.2
B 3 112 5480567 44685.33 640 623 122.6
B 3 64 179872 1461.66 640 623 122.6
B 0 245 102287 829.0 640 623 122.6
C 3 233 1967563 11927.22 713 720 164.9
C 7 247 13393 76.85 713 720 164.9
C 13 61 5315 27.86 713 720 164.9
D 13 172 79531 457.64 717 699 172.3
D 7 38 70351 404.34 717 699 172.3
D 2 33 58818 337.39 717 699 172.3

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