ASTROSAT CZTI

Data Quality Report

Orbit 25621

Creation date: 2024-06-27T19:19:38.378450
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/AS1A07_127T03_9000003732_25621cztM0_level2.evt modeM0/AS1A07_127T03_9000003732_25621cztM0_level2_quad_clean.evt
Size (bytes)493,015,680100,949,760
Size470.2 MB 96.3 MB
Events in quadrant A3,689,208661,457
Events in quadrant B3,336,618686,556
Events in quadrant C3,341,750644,344
Events in quadrant D4,136,421625,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147520
B0136620
C0137030
D0165170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296641.016518%
B6296631.000635%
C6296951.508895%
D6296921.461245%

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 7621 6297 20 20 0.26% 0.32%
B 7621 6297 1 1 0.01% 0.02%
C 7621 6297 0 0 0.00% 0.00%
D 7621 6297 61 61 0.80% 0.97%

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 245047 1442.96 846 831 169.2
A 8 192 138864 815.57 846 831 169.2
A 6 16 36301 209.57 846 831 169.2
B 12 111 18751 112.33 847 824 159.6
B 11 111 16691 99.43 847 824 159.6
B 14 111 15151 89.78 847 824 159.6
C 14 238 132282 691.67 818 825 190.1
C 3 233 19733 99.49 818 825 190.1
C 13 61 5503 24.61 818 825 190.1
D 1 52 524031 2576.59 822 803 203.1
D 8 195 304947 1497.73 822 803 203.1
D 2 244 195771 960.1 822 803 203.1

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