ASTROSAT CZTI

Data Quality Report

Orbit 20170219_G06_164T01_9000001040_level2

Creation date: 2017-09-23T05:24:37.309973
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_164T01_9000001040cztM0_level2.evt modeM0/AS1G06_164T01_9000001040cztM0_level2_quad_clean.evt
Size (bytes)2,540,672,640544,507,200
Size2.4 GB 519.3 MB
Events in quadrant A17,717,5983,502,091
Events in quadrant B18,020,3273,577,399
Events in quadrant C18,172,3593,464,442
Events in quadrant D20,438,8993,310,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07800
B07800
C07800
D07800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0786900
B0790190
C0803460
D0874850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384283140.817113%
B384283360.874362%
C384283851.001874%
D384287651.990736%

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 44838 38431 8 8 0.02% 0.02%
B 44838 38430 8 8 0.02% 0.02%
C 44838 38431 173 173 0.39% 0.45%
D 44838 38431 460 460 1.03% 1.20%

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 15 239 85230 88.52 4553 4454 912.5
A 14 111 48797 48.59 4553 4454 912.5
A 0 226 43190 42.45 4553 4454 912.5
B 0 214 102337 114.97 4577 4463 851.3
B 12 111 86780 96.7 4577 4463 851.3
B 0 219 77847 86.2 4577 4463 851.3
C 1 16 562672 550.54 4415 4434 1014.0
C 9 68 290978 282.59 4415 4434 1014.0
C 8 229 73518 68.13 4415 4434 1014.0
D 2 152 2027447 1901.69 4407 4274 1063.9
D 2 14 819089 765.89 4407 4274 1063.9
D 13 169 199766 183.75 4407 4274 1063.9

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