ASTROSAT CZTI

Data Quality Report

Orbit 42677

Creation date: 2024-06-27T22:42:56.104258
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_013T01_9000005822_42677cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42677cztM0_level2_quad_clean.evt
Size (bytes)339,117,12096,422,400
Size323.4 MB 92.0 MB
Events in quadrant A3,193,899661,375
Events in quadrant B2,815,205680,750
Events in quadrant C2,978,677635,164
Events in quadrant D3,157,370575,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125643
B0114772
C0117632
D0128232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5238500.954563%
B5238450.859107%
C5238651.240932%
D52381452.768232%

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 7361 5239 43 43 0.58% 0.82%
B 7361 5239 35 35 0.48% 0.67%
C 7361 5239 29 29 0.39% 0.55%
D 7361 5239 135 135 1.83% 2.58%

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 537212 4265.03 623 611 125.8
A 13 248 200764 1590.86 623 611 125.8
A 15 237 24116 186.82 623 611 125.8
B 0 245 168762 1434.52 620 605 117.2
B 10 246 100598 853.03 620 605 117.2
B 15 32 28733 239.96 620 605 117.2
C 15 214 230505 1623.86 608 612 141.6
C 14 254 161715 1137.96 608 612 141.6
C 8 79 139057 977.91 608 612 141.6
D 2 249 436648 3014.94 602 586 144.6
D 1 47 134751 927.62 602 586 144.6
D 1 52 118367 814.34 602 586 144.6

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