ASTROSAT CZTI

Data Quality Report

Orbit 20170527_C02_037T01_9000001252_level2

Creation date: 2017-09-24T01:03:01.789166
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_037T01_9000001252cztM0_level2.evt modeM0/AS1C02_037T01_9000001252cztM0_level2_quad_clean.evt
Size (bytes)7,094,056,3201,129,662,720
Size6.6 GB 1.1 GB
Events in quadrant A57,382,6877,077,500
Events in quadrant B49,511,1787,112,421
Events in quadrant C41,669,3597,032,072
Events in quadrant D60,093,7206,697,575

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02302570
B02063280
C01879290
D02397050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01270
C01270
D01270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018760
B018710
C018700
D018760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9178920062.185447%
B9185221942.388625%
C918866040.657336%
D9186947755.197618%

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 104790 92071 634 634 0.61% 0.69%
B 104790 92097 887 887 0.85% 0.96%
C 104790 92103 8 8 0.01% 0.01%
D 104790 92117 3786 3786 3.61% 4.11%

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 5 13520536 6117.9 10978 10755 2208.2
A 3 1 390674 172.05 10978 10755 2208.2
A 1 162 310244 135.62 10978 10755 2208.2
B 10 16 3340677 1585.7 11008 10754 2100.0
B 0 230 910004 428.22 11008 10754 2100.0
B 4 48 814190 382.59 11008 10754 2100.0
C 13 61 81198 28.67 10641 10706 2459.1
C 9 68 75540 26.37 10641 10706 2459.1
C 14 234 42971 13.12 10641 10706 2459.1
D 1 52 12436057 4728.17 10422 10152 2628.1
D 6 225 2410211 913.24 10422 10152 2628.1
D 7 71 1669105 631.25 10422 10152 2628.1

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