ASTROSAT CZTI

Data Quality Report

Orbit 20190418_A05_063T03_9000002840_level2

Creation date: 2019-04-24T11:38:41.848199
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/AS1A05_063T03_9000002840cztM0_level2_bc.evt modeM0/AS1A05_063T03_9000002840cztM0_level2_quad_clean.evt
Size (bytes)1,044,552,960371,928,960
Size996.2 MB 354.7 MB
Events in quadrant A5,914,8862,334,436
Events in quadrant B6,008,9182,385,285
Events in quadrant C10,424,5372,298,345
Events in quadrant D7,331,8602,280,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05820
B05820
C05820
D05820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0599980
B0601030
C0789760
D0647410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A286174281.495614%
B286174991.743719%
C286178663.026173%
D286174151.450187%

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 48954 28615 11 11 0.02% 0.04%
B 48954 28617 5 5 0.01% 0.02%
C 48954 28616 0 0 0.00% 0.00%
D 48954 28616 58 58 0.12% 0.20%

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 9 143 159385 482.64 1491 1459 327.2
A 13 254 32269 94.16 1491 1459 327.2
A 0 226 9636 24.99 1491 1459 327.2
B 0 190 32727 109.8 1515 1477 284.6
B 0 214 29246 97.57 1515 1477 284.6
B 0 229 28844 96.16 1515 1477 284.6
C 3 233 4820768 14212.55 1450 1440 339.1
C 8 128 15145 40.42 1450 1440 339.1
C 13 61 8546 20.96 1450 1440 339.1
D 1 52 798497 2328.41 1485 1433 342.3
D 11 176 581281 1693.87 1485 1433 342.3
D 2 234 114331 329.8 1485 1433 342.3

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