ASTROSAT CZTI

Data Quality Report

Orbit 20151110_P01_126T04_9000000092_level2

Creation date: 2016-09-06T17:59:16.620837
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_126T04_9000000092cztM0_level2_bc.evt modeM0/AS1P01_126T04_9000000092cztM0_level2_quad_clean.evt
Size (bytes)1,015,341,120288,757,440
Size968.3 MB 275.4 MB
Events in quadrant A6,112,3241,625,375
Events in quadrant B6,903,3071,659,968
Events in quadrant C5,809,6911,659,384
Events in quadrant D9,713,9371,577,176

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01387440
B01400200
C01275510
D01362310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06640
B06640
C06640
D06640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32348770.238036%
B32348800.247310%
C32348220.068010%
D323485001.545691%

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 49590 32348 6 6 0.01% 0.02%
B 49590 32348 5 5 0.01% 0.02%
C 49590 32349 12 12 0.02% 0.04%
D 49590 32348 90 90 0.18% 0.28%

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 69 192949 674.1 1369 1340 284.2
A 0 238 175040 611.09 1369 1340 284.2
A 14 79 130215 453.39 1369 1340 284.2
B 7 221 450913 1816.23 1413 1370 247.5
B 4 172 231530 929.89 1413 1370 247.5
B 5 191 183768 736.92 1413 1370 247.5
C 9 52 120131 414.23 1376 1353 286.7
C 10 117 67614 231.08 1376 1353 286.7
C 15 241 43582 147.27 1376 1353 286.7
D 1 4 1399497 4725.55 1344 1303 295.9
D 12 237 756794 2553.37 1344 1303 295.9
D 13 221 336259 1132.07 1344 1303 295.9

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