ASTROSAT CZTI

Data Quality Report

Orbit 07994

Creation date: 2024-06-27T15:26:35.723133
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/AS1G06_138T03_9000001096_07994cztM0_level2.evt modeM0/AS1G06_138T03_9000001096_07994cztM0_level2_quad_clean.evt
Size (bytes)512,219,520100,195,200
Size488.5 MB 95.6 MB
Events in quadrant A3,545,272618,359
Events in quadrant B3,697,825635,785
Events in quadrant C3,727,717639,030
Events in quadrant D4,017,649604,307

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159763
B0161944
C0162052
D0174094

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77162022.617937%
B77152373.071938%
C77161011.308968%
D77152423.136747%

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 7731 7717 0 0 0.00% 0.00%
B 7731 7717 1 1 0.01% 0.01%
C 7731 7717 1 1 0.01% 0.01%
D 7731 7717 94 94 1.22% 1.22%

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 0 226 8582 40.22 919 896 191.1
A 13 251 8477 39.67 919 896 191.1
A 12 194 7844 36.35 919 896 191.1
B 5 255 68930 378.47 922 898 179.8
B 12 111 20530 109.22 922 898 179.8
B 11 111 16518 86.9 922 898 179.8
C 8 208 154690 735.66 898 901 209.0
C 1 16 30352 140.88 898 901 209.0
C 8 128 16264 73.49 898 901 209.0
D 1 52 414535 1887.54 891 862 219.2
D 1 83 108223 489.87 891 862 219.2
D 2 14 83193 375.67 891 862 219.2

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