ASTROSAT CZTI

Data Quality Report

Orbit 20190627_A05_117T01_9000003002_level2

Creation date: 2019-07-01T12:56:29.243412
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/AS1A05_117T01_9000003002cztM0_level2_bc.evt modeM0/AS1A05_117T01_9000003002cztM0_level2_quad_clean.evt
Size (bytes)2,272,469,760777,576,960
Size2.1 GB 741.6 MB
Events in quadrant A14,167,6835,000,233
Events in quadrant B15,018,2425,018,685
Events in quadrant C12,864,9324,817,583
Events in quadrant D22,806,7474,725,463

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011820
B011820
C011820
D011820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01297780
B01318610
C01238020
D01556290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5817615772.710740%
B5817615032.583540%
C581769391.614068%
D5817625334.354029%

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 65760 58175 39 39 0.06% 0.07%
B 65761 58178 98 98 0.15% 0.17%
C 65760 58176 1 1 0.00% 0.00%
D 65761 58176 641 641 0.97% 1.10%

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 14 238 1067225 1577.67 3087 3033 674.5
A 12 96 427047 628.6 3087 3033 674.5
A 4 2 373885 549.79 3087 3033 674.5
B 0 85 1008277 1697.06 3082 3001 592.4
B 7 220 875195 1472.4 3082 3001 592.4
B 4 142 243794 406.49 3082 3001 592.4
C 3 9 917262 1299.66 2975 2958 703.5
C 3 233 332581 468.55 2975 2958 703.5
C 9 54 117338 162.59 2975 2958 703.5
D 1 52 4884674 6968.87 3023 2922 700.5
D 7 238 3068020 4375.53 3023 2922 700.5
D 2 16 1799584 2564.8 3023 2922 700.5

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