ASTROSAT CZTI

Data Quality Report

Orbit 20151210_P01_997T02_9000000212_level2

Creation date: 2018-05-16T15:34:43.723536
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/AS1P01_997T02_9000000212cztM0_level2.evt modeM0/AS1P01_997T02_9000000212cztM0_level2_quad_clean.evt
Size (bytes)19,568,508,4802,071,080,000
Size18.2 GB 1.9 GB
Events in quadrant A145,574,76813,819,362
Events in quadrant B150,609,43013,940,383
Events in quadrant C146,656,29513,453,718
Events in quadrant D141,742,59413,141,552

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024940
B024940
C024940
D024940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01590
B01590
C01590
D01590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05193900
B05342620
C05226060
D05088020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1223489570.782195%
B1223504450.363711%
C1223504820.393952%
D12234824371.991859%

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 152297 122373 4853 4853 3.19% 3.97%
B 152297 122375 4684 4684 3.08% 3.83%
C 152297 122375 4331 4331 2.84% 3.54%
D 152297 122374 6452 6452 4.24% 5.27%

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 4 32 3061786 342.95 37005 37191 8819.3
A 12 243 287246 28.35 37005 37191 8819.3
A 15 233 203639 18.87 37005 37191 8819.3
B 5 191 624919 64.55 38646 38775 9080.2
B 5 249 547604 56.04 38646 38775 9080.2
B 15 22 540098 55.21 38646 38775 9080.2
C 15 241 5906570 598.42 35106 36285 9809.6
C 10 207 2325603 233.38 35106 36285 9809.6
C 3 79 524099 49.73 35106 36285 9809.6
D 12 22 3217951 308.33 35356 35734 10320.7
D 2 216 2443570 233.3 35356 35734 10320.7
D 13 73 627410 57.33 35356 35734 10320.7

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