ASTROSAT CZTI

Data Quality Report

Orbit 05919

Creation date: 2024-06-27T15:00:50.062186
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/AS1A02_174T01_9000000766_05919cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05919cztM0_level2_quad_clean.evt
Size (bytes)703,287,36071,268,480
Size670.7 MB 68.0 MB
Events in quadrant A3,047,571449,672
Events in quadrant B3,316,566461,198
Events in quadrant C3,582,004443,261
Events in quadrant D10,930,867366,759

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133105
B0139892
C0149086
D0367662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254430.687560%
B6255530.847322%
C62531852.958580%
D6255211633.828937%

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 8770 6257 23 23 0.26% 0.37%
B 8770 6257 12 12 0.14% 0.19%
C 8770 6257 79 79 0.90% 1.26%
D 8770 6257 2138 2138 24.38% 34.17%

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 15 236 176545 1175.33 739 723 149.6
A 0 47 24722 160.43 739 723 149.6
A 0 226 7254 43.66 739 723 149.6
B 4 80 118196 815.13 757 741 144.1
B 15 255 84851 583.72 757 741 144.1
B 15 204 82462 567.14 757 741 144.1
C 9 247 750681 4464.27 722 728 168.0
C 9 68 5645 29.27 722 728 168.0
C 13 61 5638 29.23 722 728 168.0
D 1 20 7430966 45654.41 662 640 162.8
D 2 152 515194 3161.59 662 640 162.8
D 2 63 269298 1650.72 662 640 162.8

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