ASTROSAT CZTI

Data Quality Report

Orbit 20190912_C04_010T01_9000003158_level2

Creation date: 2019-09-13T17:33:04.570146
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/AS1C04_010T01_9000003158cztM0_level2_bc.evt modeM0/AS1C04_010T01_9000003158cztM0_level2_quad_clean.evt
Size (bytes)1,372,118,400351,826,560
Size1.3 GB 335.5 MB
Events in quadrant A7,127,7082,257,159
Events in quadrant B6,712,1752,282,289
Events in quadrant C10,263,9502,156,073
Events in quadrant D15,562,3212,055,358

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05620
B05620
C05620
D05620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0612600
B0603160
C0751380
D0913970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A277074271.541127%
B277074451.606092%
C2770713314.803840%
D27707281110.145451%

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 33562 27702 0 0 0.00% 0.00%
B 33562 27703 2 2 0.01% 0.01%
C 33562 27703 7 7 0.02% 0.03%
D 33562 27704 808 808 2.41% 2.92%

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 5 168 628908 1791.89 1640 1614 350.1
A 11 47 70198 195.91 1640 1614 350.1
A 5 16 44421 122.28 1640 1614 350.1
B 0 190 90591 294.39 1641 1609 302.3
B 0 230 81714 265.02 1641 1609 302.3
B 0 228 50922 163.15 1641 1609 302.3
C 3 233 4315205 12226.37 1539 1535 352.8
C 10 91 34028 92.1 1539 1535 352.8
C 13 61 8958 21.04 1539 1535 352.8
D 12 235 5045782 14436.78 1553 1505 349.4
D 13 174 2030556 5807.17 1553 1505 349.4
D 1 20 989346 2827.21 1553 1505 349.4

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