ASTROSAT CZTI

Data Quality Report

Orbit 00890

Creation date: 2024-06-27T14:04:20.319805
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/AS1P01_161T03_9000000178_00890cztM0_level2.evt modeM0/AS1P01_161T03_9000000178_00890cztM0_level2_quad_clean.evt
Size (bytes)1,132,721,28076,190,400
Size1.1 GB 72.7 MB
Events in quadrant A7,974,614470,741
Events in quadrant B10,968,019457,026
Events in quadrant C7,674,171466,591
Events in quadrant D7,248,914450,517

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283760
B0373720
C0275130
D0262840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6629180.271534%
B662982112.384975%
C6627110.165988%
D6633150.226142%

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 7210 6632 156 156 2.16% 2.35%
B 7210 6634 1442 1442 20.00% 21.74%
C 7210 6635 131 131 1.82% 1.97%
D 7210 6636 108 108 1.50% 1.63%

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 15 127 18512 32.73 2075 2093 501.7
A 11 79 6493 8.77 2075 2093 501.7
A 3 111 6476 8.74 2075 2093 501.7
B 3 0 3017101 6417.35 1964 1975 469.8
B 8 38 355070 751.52 1964 1975 469.8
B 5 249 50188 102.62 1964 1975 469.8
C 15 241 26155 44.85 1934 2005 538.5
C 9 83 26049 44.65 1934 2005 538.5
C 3 111 25854 44.29 1934 2005 538.5
D 1 4 52977 87.31 1903 1961 584.3
D 10 85 34299 55.34 1903 1961 584.3
D 13 169 17460 26.53 1903 1961 584.3

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