ASTROSAT CZTI

Data Quality Report

Orbit 20180206_A04_112T01_9000001884_level2

Creation date: 2018-07-16T10:04:18.462613
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/AS1A04_112T01_9000001884cztM0_level2_bc.evt modeM0/AS1A04_112T01_9000001884cztM0_level2_quad_clean.evt
Size (bytes)1,641,859,200695,704,320
Size1.5 GB 663.5 MB
Events in quadrant A10,030,1554,770,179
Events in quadrant B13,887,7744,616,539
Events in quadrant C9,162,5394,683,283
Events in quadrant D14,017,9974,359,486

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07840
B07840
C07840
D07840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0848200
B01039390
C0837730
D01025100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384885621.460195%
B3848832238.374039%
C384885261.366660%
D3848823156.014862%

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 46395 38491 20 20 0.04% 0.05%
B 46395 38485 367 367 0.79% 0.95%
C 46394 38488 22 22 0.05% 0.06%
D 46394 38487 261 261 0.56% 0.68%

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 23 971278 2188.56 2029 1993 442.9
A 12 189 491883 1106.13 2029 1993 442.9
A 15 239 359718 807.71 2029 1993 442.9
B 4 239 5009071 13615.26 1967 1921 367.8
B 0 85 317736 858.75 1967 1921 367.8
B 3 64 275438 743.74 1967 1921 367.8
C 15 208 1464836 3406.66 1954 1931 429.4
C 12 4 36430 80.34 1954 1931 429.4
C 14 234 15731 32.13 1954 1931 429.4
D 1 52 4539452 10193.72 1918 1858 445.1
D 8 195 764918 1714.22 1918 1858 445.1
D 2 136 358403 800.98 1918 1858 445.1

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