ASTROSAT CZTI

Data Quality Report

Orbit 20170821_C02_021T01_9000001482_level2

Creation date: 2017-10-18T09:45:07.398398
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C02_021T01_9000001482cztM0_level2.evt modeM0/AS1C02_021T01_9000001482cztM0_level2_quad_clean.evt
Size (bytes)4,495,481,280979,787,520
Size4.2 GB 934.4 MB
Events in quadrant A31,135,9616,420,716
Events in quadrant B33,785,2936,389,779
Events in quadrant C28,881,5256,356,265
Events in quadrant D37,970,9726,070,245

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01371350
B01432820
C01336000
D01550900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012920
B010590
C012840
D012950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A650766440.989612%
B6466610071.557233%
C653604070.622705%
D6512012981.993243%

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 102151 67445 118 118 0.12% 0.17%
B 102149 67088 257 257 0.25% 0.38%
C 102151 67569 20 20 0.02% 0.03%
D 102151 66280 803 803 0.79% 1.21%

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 8 15 908553 595.4 7587 7427 1513.5
A 8 5 627570 409.75 7587 7427 1513.5
A 15 174 164630 103.87 7587 7427 1513.5
B 4 239 1863723 1341.85 7480 7306 1383.5
B 11 51 1237931 889.52 7480 7306 1383.5
B 0 85 403434 286.33 7480 7306 1383.5
C 4 254 134559 75.69 7350 7386 1680.1
C 13 61 55557 28.67 7350 7386 1680.1
C 14 67 37015 17.64 7350 7386 1680.1
D 8 195 3478567 1989.0 7335 7134 1745.3
D 1 52 1851384 1056.68 7335 7134 1745.3
D 12 233 1144935 651.92 7335 7134 1745.3

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