ASTROSAT CZTI

Data Quality Report

Orbit 20170826_C02_038T02_9000001490_level2

Creation date: 2018-05-18T04:29:46.121538
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_038T02_9000001490cztM0_level2.evt modeM0/AS1C02_038T02_9000001490cztM0_level2_quad_clean.evt
Size (bytes)3,932,208,000682,407,360
Size3.7 GB 650.8 MB
Events in quadrant A28,606,9904,205,805
Events in quadrant B28,934,6534,206,518
Events in quadrant C25,666,3774,233,699
Events in quadrant D32,115,4084,199,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01213080
B01212450
C01140930
D01326640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011630
B011470
C011570
D011580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552429761.766772%
B5489315372.799993%
C554695971.076277%
D5728711191.953323%

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 101870 57909 2 2 0.00% 0.00%
B 101870 57640 404 404 0.40% 0.70%
C 101870 58031 5 5 0.00% 0.01%
D 101870 58230 412 412 0.40% 0.71%

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 2462510 1835.2 6653 6510 1338.3
A 13 251 430874 317.1 6653 6510 1338.3
A 0 226 60999 40.72 6653 6510 1338.3
B 4 239 2074611 1667.68 6594 6424 1240.2
B 11 51 487208 387.68 6594 6424 1240.2
B 0 219 384889 305.17 6594 6424 1240.2
C 14 234 89982 55.28 6553 6583 1508.6
C 13 61 48855 28.02 6553 6583 1508.6
C 4 175 43306 24.34 6553 6583 1508.6
D 8 195 2102939 1315.15 6706 6522 1594.1
D 1 52 1277850 797.55 6706 6522 1594.1
D 2 33 1146110 714.9 6706 6522 1594.1

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