ASTROSAT CZTI

Data Quality Report

Orbit 12909

Creation date: 2024-06-27T16:33:49.841881
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/AS1A04_116T01_9000001896_12909cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12909cztM0_level2_quad_clean.evt
Size (bytes)503,784,00091,010,880
Size480.4 MB 86.8 MB
Events in quadrant A3,172,282607,357
Events in quadrant B5,091,057533,514
Events in quadrant C2,979,316616,200
Events in quadrant D3,608,138580,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131162
B0190031
C0127911
D0146051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5989530.884956%
B5989105117.548840%
C5989550.918350%
D59891081.803306%

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 7260 5991 0 0 0.00% 0.00%
B 7260 5990 483 483 6.65% 8.06%
C 7260 5991 0 0 0.00% 0.00%
D 7260 5991 55 55 0.76% 0.92%

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 12 189 110352 706.16 779 765 155.2
A 1 162 30825 193.7 779 765 155.2
A 1 178 14326 87.38 779 765 155.2
B 4 239 2030603 15967.1 698 683 127.1
B 3 64 213164 1671.35 698 683 127.1
B 3 209 61810 480.82 698 683 127.1
C 4 112 11264 61.32 760 764 171.2
C 13 61 5629 28.41 760 764 171.2
C 8 222 2163 8.17 760 764 171.2
D 1 52 496124 2820.64 752 733 175.6
D 13 122 88540 499.95 752 733 175.6
D 10 157 73838 416.24 752 733 175.6

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