ASTROSAT CZTI

Data Quality Report

Orbit 14566

Creation date: 2024-06-27T16:56:56.498791
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_089T01_9000002146_14566cztM0_level2.evt modeM0/AS1A04_089T01_9000002146_14566cztM0_level2_quad_clean.evt
Size (bytes)522,927,360103,443,840
Size498.7 MB 98.7 MB
Events in quadrant A3,559,975657,995
Events in quadrant B3,770,124666,702
Events in quadrant C4,111,991647,443
Events in quadrant D3,882,072635,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155154
B0160233
C0165653
D0166543

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75401221.618037%
B75401351.790451%
C7540991.312997%
D75401491.976127%

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 7766 7544 0 0 0.00% 0.00%
B 7766 7544 8 8 0.10% 0.11%
C 7766 7544 0 0 0.00% 0.00%
D 7766 7544 49 49 0.63% 0.65%

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 8 15 66745 358.99 900 882 183.5
A 12 189 18775 97.53 900 882 183.5
A 0 226 8240 40.11 900 882 183.5
B 0 189 63651 364.73 895 873 172.1
B 4 173 61289 351.01 895 873 172.1
B 0 205 24679 138.31 895 873 172.1
C 3 233 693802 3407.46 872 874 203.4
C 8 128 8805 39.0 872 874 203.4
C 13 61 6288 26.62 872 874 203.4
D 10 199 287010 1216.89 871 856 235.2
D 12 110 170802 722.71 871 856 235.2
D 13 122 47931 200.19 871 856 235.2

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