ASTROSAT CZTI

Data Quality Report

Orbit 13912

Creation date: 2024-06-27T16:47:48.569044
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_012T02_9000002050_13912cztM0_level2.evt modeM0/AS1A04_012T02_9000002050_13912cztM0_level2_quad_clean.evt
Size (bytes)523,802,88099,236,160
Size499.5 MB 94.6 MB
Events in quadrant A4,360,521626,241
Events in quadrant B3,456,421642,691
Events in quadrant C3,407,239634,806
Events in quadrant D4,155,352604,892

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177763
B0150382
C0148772
D0171792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71342483.476311%
B7134570.798991%
C7134220.308382%
D71341001.401738%

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 9200 7137 159 159 1.73% 2.23%
B 9200 7136 2 2 0.02% 0.03%
C 9200 7137 0 0 0.00% 0.00%
D 9200 7137 38 38 0.41% 0.53%

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 9 143 1010054 5677.08 862 843 177.8
A 1 162 14552 77.12 862 843 177.8
A 8 15 13688 72.26 862 843 177.8
B 0 219 30136 175.56 868 845 166.8
B 12 111 20460 117.56 868 845 166.8
B 11 111 17583 100.32 868 845 166.8
C 3 233 106116 533.46 847 852 197.3
C 13 61 6215 27.18 847 852 197.3
C 12 4 2065 6.15 847 852 197.3
D 13 122 572679 2876.64 833 811 198.8
D 1 52 184107 922.03 833 811 198.8
D 5 222 91280 455.08 833 811 198.8

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