ASTROSAT CZTI

Data Quality Report

Orbit 28846

Creation date: 2024-06-27T19:57:06.966330
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/AS1A10_103T08_9000004136_28846cztM0_level2.evt modeM0/AS1A10_103T08_9000004136_28846cztM0_level2_quad_clean.evt
Size (bytes)705,625,920124,879,680
Size672.9 MB 119.1 MB
Events in quadrant A3,072,978891,781
Events in quadrant B3,681,761903,964
Events in quadrant C3,120,808860,824
Events in quadrant D11,070,478686,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131781
B0149751
C0131821
D0372321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6280240.382166%
B62801422.261146%
C6280821.305732%
D6281229236.491005%

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 7440 6280 0 0 0.00% 0.00%
B 7440 6280 63 63 0.85% 1.00%
C 7440 6280 2 2 0.03% 0.03%
D 7440 6280 2283 2283 30.69% 36.35%

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 7 192 19801 123.57 780 765 154.0
A 5 98 17171 106.5 780 765 154.0
A 13 254 12949 79.09 780 765 154.0
B 10 246 214074 1475.61 780 762 144.6
B 5 172 165898 1142.35 780 762 144.6
B 5 255 70925 485.36 780 762 144.6
C 14 238 129538 734.99 754 760 175.2
C 3 233 18722 102.52 754 760 175.2
C 0 207 18070 98.79 754 760 175.2
D 8 195 4634190 29844.2 658 640 155.3
D 1 52 1894590 12198.73 658 640 155.3
D 13 104 1890682 12173.56 658 640 155.3

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