ASTROSAT CZTI

Data Quality Report

Orbit 20151025_P01_161T01_9000000068_level2

Creation date: 2016-09-06T17:59:47.463760
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/AS1P01_161T01_9000000068cztM0_level2_bc.evt modeM0/AS1P01_161T01_9000000068cztM0_level2_quad_clean.evt
Size (bytes)1,249,796,160232,911,360
Size1.2 GB 222.1 MB
Events in quadrant A6,396,8841,288,624
Events in quadrant B7,734,9971,301,542
Events in quadrant C10,901,5291,271,573
Events in quadrant D10,864,4551,222,527

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05860
B05860
C05860
D05860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01270250
B01294090
C01322980
D01321960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28642300.104741%
B286422790.974094%
C286424921.717757%
D286427652.670903%

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 41032 28643 1 1 0.00% 0.00%
B 41032 28642 89 89 0.22% 0.31%
C 41032 28642 402 402 0.98% 1.40%
D 41032 28643 57 57 0.14% 0.20%

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 0 238 525673 1906.05 1342 1321 275.1
A 15 85 142298 512.46 1342 1321 275.1
A 15 200 107984 387.73 1342 1321 275.1
B 2 32 1439319 6049.52 1363 1331 237.7
B 0 220 209352 875.13 1363 1331 237.7
B 5 46 99665 413.68 1363 1331 237.7
C 1 1 3691040 13563.19 1306 1291 272.0
C 2 53 1412146 5186.18 1306 1291 272.0
C 3 159 355448 1301.85 1306 1291 272.0
D 13 7 1579905 5557.55 1291 1263 284.1
D 13 221 834606 2933.75 1291 1263 284.1
D 1 4 658019 2312.08 1291 1263 284.1

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