ASTROSAT CZTI

Data Quality Report

Orbit 24174

Creation date: 2024-06-27T19:03:05.875924
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/AS1A07_067T01_9000003578_24174cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24174cztM0_level2_quad_clean.evt
Size (bytes)701,176,32076,325,760
Size668.7 MB 72.8 MB
Events in quadrant A2,989,832523,128
Events in quadrant B2,966,108529,587
Events in quadrant C3,371,407496,490
Events in quadrant D11,514,709354,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120591
B0120721
C0134021
D0382234

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5816751.289546%
B5817851.461234%
C58172103.610108%
D5816348759.955296%

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 7056 5817 0 0 0.00% 0.00%
B 7057 5818 1 1 0.01% 0.02%
C 7057 5819 79 79 1.12% 1.36%
D 7056 5816 3353 3353 47.52% 57.65%

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 13 254 9024 54.02 774 759 153.0
A 0 226 7036 41.02 774 759 153.0
A 3 137 6321 36.35 774 759 153.0
B 12 111 16769 112.34 757 741 142.7
B 11 111 14844 98.85 757 741 142.7
B 14 111 13102 86.64 757 741 142.7
C 0 239 350005 2128.04 719 724 164.1
C 14 238 115264 697.85 719 724 164.1
C 2 16 78374 473.09 719 724 164.1
D 7 238 8758901 69442.95 523 509 126.1
D 1 52 266776 2111.16 523 509 126.1
D 8 195 264266 2091.25 523 509 126.1

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