ASTROSAT CZTI

Data Quality Report

Orbit 20170728_A03_009T01_9000001412_level2

Creation date: 2017-09-24T12:26:35.925179
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/AS1A03_009T01_9000001412cztM0_level2.evt modeM0/AS1A03_009T01_9000001412cztM0_level2_quad_clean.evt
Size (bytes)2,498,549,760404,055,360
Size2.3 GB 385.3 MB
Events in quadrant A16,427,0962,507,388
Events in quadrant B16,454,4632,552,824
Events in quadrant C15,249,8252,562,910
Events in quadrant D25,281,7432,319,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720020
B0712310
C0692080
D0974750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06920
B06800
C06920
D06880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A335307482.230838%
B335417662.283772%
C336135611.668997%
D3274717635.383699%

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 39646 34583 107 107 0.27% 0.31%
B 39647 34647 27 27 0.07% 0.08%
C 39647 34691 3 3 0.01% 0.01%
D 39647 34031 1104 1104 2.78% 3.24%

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 15 239 909409 1138.11 3955 3867 795.7
A 14 254 206249 254.36 3955 3867 795.7
A 14 111 47678 55.06 3955 3867 795.7
B 0 214 303812 398.1 3991 3896 753.4
B 4 81 146620 189.45 3991 3896 753.4
B 4 239 135836 175.14 3991 3896 753.4
C 13 61 29289 28.46 3889 3901 892.1
C 9 221 28388 27.45 3889 3901 892.1
C 12 4 20320 18.4 3889 3901 892.1
D 2 16 2951301 3210.68 3686 3594 918.1
D 8 195 2885642 3139.16 3686 3594 918.1
D 1 52 1985429 2158.64 3686 3594 918.1

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