ASTROSAT CZTI

Data Quality Report

Orbit 40799

Creation date: 2024-06-27T22:20:41.287879
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/AS1A12_099T03_9000005570_40799cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40799cztM0_level2_quad_clean.evt
Size (bytes)348,776,64096,459,840
Size332.6 MB 92.0 MB
Events in quadrant A3,396,392639,515
Events in quadrant B2,938,187659,666
Events in quadrant C2,895,830633,535
Events in quadrant D3,219,045574,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135443
B0127682
C0123122
D0137892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5920951.604730%
B5920671.131757%
C5920460.777027%
D59201141.925676%

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 7232 5921 69 69 0.95% 1.17%
B 7232 5921 52 52 0.72% 0.88%
C 7232 5921 42 42 0.58% 0.71%
D 7232 5921 124 124 1.71% 2.09%

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 10 83 549583 4070.4 651 637 134.9
A 6 10 274386 2029.83 651 637 134.9
A 12 189 31689 230.25 651 637 134.9
B 5 255 303111 2401.98 646 631 125.9
B 15 85 29815 231.75 646 631 125.9
B 0 230 26023 201.64 646 631 125.9
C 15 214 258000 1736.63 634 637 148.2
C 0 10 127065 853.11 634 637 148.2
C 14 254 28893 190.67 634 637 148.2
D 12 233 319231 2062.66 631 613 154.5
D 2 153 233470 1507.46 631 613 154.5
D 2 249 119366 768.78 631 613 154.5

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