ASTROSAT CZTI

Data Quality Report

Orbit 20160728_G05_250T01_9000000568_level2

Creation date: 2018-05-17T11:38:59.743109
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/AS1G05_250T01_9000000568cztM0_level2.evt modeM0/AS1G05_250T01_9000000568cztM0_level2_quad_clean.evt
Size (bytes)12,034,762,5602,057,431,680
Size11.2 GB 1.9 GB
Events in quadrant A121,011,76112,484,452
Events in quadrant B75,584,21913,335,794
Events in quadrant C72,739,53113,091,829
Events in quadrant D84,536,10812,627,990

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04674380
B03333800
C03316270
D03649100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032160
B032180
C032280
D032300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02470
B02440
C02460
D02480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1568021759211.219245%
B15742325411.614122%
C15743721411.359909%
D15707935672.270832%

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 202083 157984 9628 9628 4.76% 6.09%
B 202083 158710 395 395 0.20% 0.25%
C 202083 158683 381 381 0.19% 0.24%
D 202083 158421 1711 1711 0.85% 1.08%

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 13 48635505 14205.44 17065 16715 3422.5
A 13 251 2704047 785.18 17065 16715 3422.5
A 0 50 1382548 399.07 17065 16715 3422.5
B 4 80 1283841 370.13 18143 17692 3420.8
B 15 204 990523 284.39 18143 17692 3420.8
B 4 48 948499 272.1 18143 17692 3420.8
C 14 48 2340471 581.08 17440 17509 3997.7
C 9 247 1476533 364.97 17440 17509 3997.7
C 1 16 261291 60.98 17440 17509 3997.7
D 13 235 5224578 1172.37 17106 16722 4442.2
D 1 20 4114709 922.52 17106 16722 4442.2
D 13 53 1462753 325.52 17106 16722 4442.2

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