ASTROSAT CZTI

Data Quality Report

Orbit 26662

Creation date: 2024-06-27T19:31:31.319272
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/AS1A09_145T01_9000003848_26662cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26662cztM0_level2_quad_clean.evt
Size (bytes)502,790,40085,147,200
Size479.5 MB 81.2 MB
Events in quadrant A3,049,331567,886
Events in quadrant B2,950,455569,358
Events in quadrant C3,133,853535,128
Events in quadrant D5,725,127525,849

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121730
B0118430
C0124720
D0206950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5435651.195952%
B5436380.699043%
C54361272.336277%
D543667112.343635%

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 6735 5436 2 2 0.03% 0.04%
B 6736 5437 0 0 0.00% 0.00%
C 6736 5437 51 51 0.76% 0.94%
D 6736 5437 599 599 8.89% 11.02%

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 13 55846 362.43 766 756 152.0
A 12 96 35426 228.09 766 756 152.0
A 13 254 9399 56.86 766 756 152.0
B 12 111 16133 108.85 747 732 141.5
B 11 111 14432 96.83 747 732 141.5
B 0 189 14015 93.88 747 732 141.5
C 2 16 197406 1174.8 717 724 167.4
C 14 238 117355 696.65 717 724 167.4
C 3 233 16847 96.3 717 724 167.4
D 7 80 1979147 11340.6 720 701 174.5
D 1 52 936081 5361.67 720 701 174.5
D 2 250 53457 302.4 720 701 174.5

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