ASTROSAT CZTI

Data Quality Report

Orbit 27795

Creation date: 2024-06-27T19:44:29.918721
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_016T01_9000004016_27795cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27795cztM0_level2_quad_clean.evt
Size (bytes)694,808,64093,384,000
Size662.6 MB 89.1 MB
Events in quadrant A3,685,658608,005
Events in quadrant B4,132,866610,768
Events in quadrant C3,768,300591,370
Events in quadrant D8,949,819497,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157160
B0171990
C0159050
D0318970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74691051.405811%
B74692363.159727%
C74701742.329317%
D7470201426.961178%

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 9074 7470 0 0 0.00% 0.00%
B 9074 7469 44 44 0.48% 0.59%
C 9075 7470 0 0 0.00% 0.00%
D 9075 7470 1662 1662 18.31% 22.25%

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 12837 61.84 954 934 192.5
A 3 137 9200 42.94 954 934 192.5
A 0 226 8106 37.26 954 934 192.5
B 10 245 252540 1402.43 943 920 179.4
B 3 64 92760 511.88 943 920 179.4
B 4 52 33295 180.45 943 920 179.4
C 14 238 144723 657.89 921 926 218.6
C 3 233 28882 127.9 921 926 218.6
C 10 22 8527 34.78 921 926 218.6
D 1 52 5670184 29475.45 794 771 192.3
D 2 250 180849 936.23 794 771 192.3
D 13 104 47288 241.84 794 771 192.3

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