ASTROSAT CZTI

Data Quality Report

Orbit 30180

Creation date: 2024-06-27T20:11:54.714161
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_102T01_9000004340_30180cztM0_level2.evt modeM0/AS1A10_102T01_9000004340_30180cztM0_level2_quad_clean.evt
Size (bytes)851,967,36076,711,680
Size812.5 MB 73.2 MB
Events in quadrant A3,161,104570,490
Events in quadrant B4,913,866583,771
Events in quadrant C11,816,023280,153
Events in quadrant D5,503,605465,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128631
B0183731
C0390892
D0202981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6039210.347740%
B6040540.894040%
C6039455975.492631%
D603982013.578407%

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 7414 6040 1 1 0.01% 0.02%
B 7415 6041 0 0 0.00% 0.00%
C 7413 6038 4041 4041 54.51% 66.93%
D 7414 6039 675 675 9.10% 11.18%

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 8 192 12926 74.46 816 801 162.8
A 13 254 10320 58.46 816 801 162.8
A 3 137 7698 42.36 816 801 162.8
B 6 159 1703158 11118.83 814 797 153.1
B 12 111 18482 115.51 814 797 153.1
B 11 111 16563 102.97 814 797 153.1
C 3 233 9729726 84606.05 495 500 115.0
C 14 238 98198 849.59 495 500 115.0
C 14 254 30432 260.29 495 500 115.0
D 1 52 1376822 7834.42 718 703 175.7
D 13 104 956684 5442.52 718 703 175.7
D 8 195 299692 1702.18 718 703 175.7

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