ASTROSAT CZTI

Data Quality Report

Orbit 20616

Creation date: 2024-06-27T18:17:29.371883
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/AS1A06_005T02_9000003048_20616cztM0_level2.evt modeM0/AS1A06_005T02_9000003048_20616cztM0_level2_quad_clean.evt
Size (bytes)670,440,960104,520,960
Size639.4 MB 99.7 MB
Events in quadrant A3,816,586689,515
Events in quadrant B3,931,888687,732
Events in quadrant C4,222,443663,020
Events in quadrant D7,819,560596,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163082
B0166622
C0173992
D0283212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7588801.054296%
B7588971.278334%
C7589971.278166%
D7589140718.539992%

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 8648 7590 36 36 0.42% 0.47%
B 8648 7590 25 25 0.29% 0.33%
C 8649 7591 0 0 0.00% 0.00%
D 8649 7591 1337 1337 15.46% 17.61%

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 5 16 240424 1293.98 915 896 185.1
A 12 16 25381 132.27 915 896 185.1
A 15 174 16707 85.41 915 896 185.1
B 7 220 188936 1063.54 913 890 176.8
B 0 190 37019 204.34 913 890 176.8
B 3 64 28152 154.19 913 890 176.8
C 3 9 417202 2051.73 870 875 202.9
C 14 238 135297 662.46 870 875 202.9
C 3 233 126311 618.17 870 875 202.9
D 1 52 3906366 19356.49 824 799 201.8
D 13 153 257903 1274.24 824 799 201.8
D 5 222 241682 1193.85 824 799 201.8

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