ASTROSAT CZTI

Data Quality Report

Orbit 30591

Creation date: 2024-06-27T20:17:24.702332
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_058T03_9000004408_30591cztM0_level2.evt modeM0/AS1A10_058T03_9000004408_30591cztM0_level2_quad_clean.evt
Size (bytes)688,916,160110,088,000
Size657.0 MB 105.0 MB
Events in quadrant A3,690,770742,103
Events in quadrant B5,966,011734,807
Events in quadrant C4,095,507651,945
Events in quadrant D6,595,000673,322

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159102
B0232632
C0172132
D0250663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7635680.890635%
B76361592.082242%
C763688411.576742%
D76352172.842174%

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 7830 7637 0 0 0.00% 0.00%
B 7831 7638 1 1 0.01% 0.01%
C 7831 7638 2 2 0.03% 0.03%
D 7830 7637 112 112 1.43% 1.47%

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 14831 72.35 953 933 192.1
A 8 192 12300 59.17 953 933 192.1
A 3 137 9584 45.04 953 933 192.1
B 6 159 2141903 11956.75 937 915 179.1
B 0 190 42069 229.83 937 915 179.1
B 0 229 37075 201.94 937 915 179.1
C 14 238 344397 1714.22 851 854 200.4
C 14 254 277597 1380.9 851 854 200.4
C 3 233 68411 337.1 851 854 200.4
D 8 195 2062062 9529.21 904 877 216.3
D 2 250 242803 1118.47 904 877 216.3
D 13 249 240002 1105.52 904 877 216.3

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