ASTROSAT CZTI

Data Quality Report

Orbit 31920

Creation date: 2024-06-27T20:34:12.484047
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_123T09_9000004654_31920cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31920cztM0_level2_quad_clean.evt
Size (bytes)687,798,72082,042,560
Size655.9 MB 78.2 MB
Events in quadrant A2,875,457565,164
Events in quadrant B5,221,835536,082
Events in quadrant C5,271,877500,701
Events in quadrant D7,062,835469,199

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122241
B0198481
C0196961
D0248541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5896360.610583%
B58973075.206037%
C58975579.445481%
D5897104617.737833%

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 6871 5897 0 0 0.00% 0.00%
B 6872 5898 143 143 2.08% 2.42%
C 6872 5898 200 200 2.91% 3.39%
D 6872 5898 1053 1053 15.32% 17.85%

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 13 6 23926 157.5 733 718 147.3
A 12 96 18874 123.22 733 718 147.3
A 13 254 11751 74.88 733 718 147.3
B 6 159 1771751 13018.39 712 694 136.0
B 5 172 372459 2732.71 712 694 136.0
B 10 245 88685 646.79 712 694 136.0
C 3 233 1805761 11342.95 683 686 159.1
C 0 10 630772 3959.41 683 686 159.1
C 14 238 108192 675.56 683 686 159.1
D 12 33 2413534 14866.52 679 660 162.3
D 8 195 1577832 9717.48 679 660 162.3
D 7 38 109761 672.2 679 660 162.3

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