ASTROSAT CZTI

Data Quality Report

Orbit 20170228_G06_104T01_9000001060_level2

Creation date: 2017-09-23T07:09:49.520467
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/AS1G06_104T01_9000001060cztM0_level2.evt modeM0/AS1G06_104T01_9000001060cztM0_level2_quad_clean.evt
Size (bytes)6,729,600,9601,053,846,720
Size6.3 GB 1005.0 MB
Events in quadrant A37,617,2076,779,519
Events in quadrant B40,154,8066,895,363
Events in quadrant C76,450,5176,350,611
Events in quadrant D44,123,2506,332,852

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016560
B016560
C016560
D016560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01665080
B01719510
C02818760
D01868830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A810949871.217106%
B8109411971.476065%
C810941124413.865391%
D8109414541.792981%

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 93639 81109 21 21 0.02% 0.03%
B 93639 81109 75 75 0.08% 0.09%
C 93639 81108 10071 10071 10.76% 12.42%
D 93639 81110 521 521 0.56% 0.64%

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 0 226 92664 42.89 9680 9469 1939.7
A 3 1 90446 41.75 9680 9469 1939.7
A 12 194 86501 39.71 9680 9469 1939.7
B 0 219 1093263 596.78 9735 9513 1816.0
B 4 239 299208 159.52 9735 9513 1816.0
B 4 173 254873 135.11 9735 9513 1816.0
C 9 68 39255657 18789.34 9094 9140 2088.8
C 8 229 849515 402.33 9094 9140 2088.8
C 8 208 582581 274.54 9094 9140 2088.8
D 2 152 3648505 1599.74 9414 9125 2275.0
D 1 83 1725519 754.46 9414 9125 2275.0
D 13 104 1325331 578.56 9414 9125 2275.0

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