ASTROSAT CZTI

Data Quality Report

Orbit 20201220_A10_102T06_9000004078_level2

Creation date: 2021-01-06T19:38:13.592925
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/AS1A10_102T06_9000004078cztM0_level2_bc.evt modeM0/AS1A10_102T06_9000004078cztM0_level2_quad_clean.evt
Size (bytes)4,082,785,9201,425,447,360
Size3.8 GB 1.3 GB
Events in quadrant A20,399,4059,401,984
Events in quadrant B29,444,7789,426,401
Events in quadrant C19,287,9379,248,263
Events in quadrant D48,112,8268,651,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019200
B019200
C015760
D019200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01978230
B02282050
C01970700
D02947910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9433613201.399254%
B9433647875.074415%
C9433615551.648363%
D9433680218.502586%

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 109401 94328 22 22 0.02% 0.02%
B 109401 94330 1530 1530 1.40% 1.62%
C 109401 94328 5 5 0.00% 0.01%
D 109401 94327 2413 2413 2.21% 2.56%

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 15 174 765018 701.23 5012 4936 1083.9
A 13 254 156745 140.05 5012 4936 1083.9
A 12 96 142679 127.08 5012 4936 1083.9
B 10 245 9563667 10121.55 5009 4899 944.4
B 4 200 224891 232.94 5009 4899 944.4
B 0 230 192777 198.94 5009 4899 944.4
C 3 233 527545 452.96 4858 4843 1154.0
C 15 208 94043 77.3 4858 4843 1154.0
C 13 61 27665 19.78 4858 4843 1154.0
D 1 52 19989017 18221.04 4749 4599 1096.8
D 8 195 5725027 5215.67 4749 4599 1096.8
D 12 250 1773849 1613.14 4749 4599 1096.8

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