ASTROSAT CZTI

Data Quality Report

Orbit 20180912_T02_090T01_9000002360_level2

Creation date: 2018-10-03T13:35:03.118160
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/AS1T02_090T01_9000002360cztM0_level2_bc.evt modeM0/AS1T02_090T01_9000002360cztM0_level2_quad_clean.evt
Size (bytes)1,020,911,040404,328,960
Size973.6 MB 385.6 MB
Events in quadrant A6,461,7902,650,025
Events in quadrant B8,492,7332,649,320
Events in quadrant C7,139,6512,578,024
Events in quadrant D7,000,8322,534,439

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0579830
B0671700
C0614840
D0600140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A266913431.285077%
B2669110123.791540%
C266916642.487730%
D266913821.431194%

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 32556 26688 1 1 0.00% 0.00%
B 32556 26686 42 42 0.13% 0.16%
C 32556 26688 38 38 0.12% 0.14%
D 32556 26688 4 4 0.01% 0.01%

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 15 239 114269 316.67 1616 1586 355.8
A 9 143 55272 150.87 1616 1586 355.8
A 13 210 36508 98.14 1616 1586 355.8
B 10 245 731977 2399.54 1615 1589 304.4
B 7 220 609345 1996.66 1615 1589 304.4
B 4 173 144161 468.39 1615 1589 304.4
C 9 236 639161 1742.55 1566 1575 365.9
C 0 207 230689 626.18 1566 1575 365.9
C 3 233 216637 587.77 1566 1575 365.9
D 2 152 256699 690.45 1600 1552 369.5
D 12 218 186928 501.65 1600 1552 369.5
D 9 85 129742 346.9 1600 1552 369.5

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