ASTROSAT CZTI

Data Quality Report

Orbit 18137

Creation date: 2024-06-27T17:45:38.679627
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_186T01_9000002692_18137cztM0_level2.evt modeM0/AS1A05_186T01_9000002692_18137cztM0_level2_quad_clean.evt
Size (bytes)364,371,84069,128,640
Size347.5 MB 65.9 MB
Events in quadrant A2,301,338467,446
Events in quadrant B2,361,405472,089
Events in quadrant C2,240,519434,311
Events in quadrant D3,837,641414,891

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094141
B095591
C091871
D0143511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4329260.600601%
B4329250.577501%
C4329290.669901%
D43291022.356202%

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 4329 4329 0 0 0.00% 0.00%
B 4329 4329 1 1 0.02% 0.02%
C 4329 4329 0 0 0.00% 0.00%
D 4329 4329 82 82 1.89% 1.89%

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 16370 133.61 590 580 118.2
A 4 2 14748 119.89 590 580 118.2
A 0 226 5424 40.99 590 580 118.2
B 7 220 30889 278.11 584 572 109.0
B 0 189 13788 121.24 584 572 109.0
B 12 111 11735 102.4 584 572 109.0
C 14 238 87840 699.25 547 554 124.8
C 3 233 9849 74.46 547 554 124.8
C 13 61 3873 26.59 547 554 124.8
D 7 238 1421599 10490.8 557 543 135.5
D 11 176 149226 1097.64 557 543 135.5
D 14 34 88564 649.81 557 543 135.5

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