ASTROSAT CZTI

Data Quality Report

Orbit 20200514_A07_027T11_9000003668_level2

Creation date: 2020-05-16T23:08:19.954533
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/AS1A07_027T11_9000003668cztM0_level2_bc.evt modeM0/AS1A07_027T11_9000003668cztM0_level2_quad_clean.evt
Size (bytes)680,474,880113,423,040
Size649.0 MB 108.2 MB
Events in quadrant A1,824,720799,495
Events in quadrant B1,925,299814,067
Events in quadrant C8,197,840678,009
Events in quadrant D8,086,622561,852

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176990
B0180910
C0382470
D0377190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8345931.114440%
B83451061.270222%
C8345212625.476333%
D8345287434.439784%

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 10505 8345 0 0 0.00% 0.00%
B 10505 8345 0 0 0.00% 0.00%
C 10505 8345 742 742 7.06% 8.89%
D 10505 8344 1847 1847 17.58% 22.14%

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 10862 99.79 473 463 104.2
A 0 226 2999 24.33 473 463 104.2
A 6 16 2936 23.73 473 463 104.2
B 4 80 26162 284.72 477 466 90.3
B 0 245 20917 226.6 477 466 90.3
B 4 173 16881 181.88 477 466 90.3
C 7 247 6556433 65659.01 414 410 99.8
C 0 239 20030 196.5 414 410 99.8
C 7 226 16742 163.57 414 410 99.8
D 7 238 5925512 63406.33 395 380 93.4
D 8 195 595119 6364.45 395 380 93.4
D 2 234 30020 317.19 395 380 93.4

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