ASTROSAT CZTI

Data Quality Report

Orbit 20180124_A04_130T04_9000001872_level2

Creation date: 2018-07-24T16:28:06.124938
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/AS1A04_130T04_9000001872cztM0_level2_bc.evt modeM0/AS1A04_130T04_9000001872cztM0_level2_quad_clean.evt
Size (bytes)945,434,880345,905,280
Size901.6 MB 329.9 MB
Events in quadrant A5,588,4762,138,541
Events in quadrant B7,758,3572,176,462
Events in quadrant C5,678,8222,156,678
Events in quadrant D7,666,3462,054,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0589050
B0669470
C0592780
D0661680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05700
B05840
C05720
D05720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A284036682.351864%
B2832711794.162107%
C283644601.621774%
D283859913.491281%

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 33515 28899 0 0 0.00% 0.00%
B 33515 28810 44 44 0.13% 0.15%
C 33515 28858 2 2 0.01% 0.01%
D 33515 28891 61 61 0.18% 0.21%

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 12 189 93006 292.48 1411 1378 313.3
A 12 96 50003 155.21 1411 1378 313.3
A 12 194 9853 27.05 1411 1378 313.3
B 4 239 1014599 3741.64 1421 1381 270.8
B 3 64 783574 2888.5 1421 1381 270.8
B 11 51 228675 839.36 1421 1381 270.8
C 15 208 191179 619.42 1392 1369 306.4
C 8 128 10287 29.1 1392 1369 306.4
C 8 222 9964 28.05 1392 1369 306.4
D 1 52 926790 2851.2 1384 1330 324.6
D 10 157 816618 2511.77 1384 1330 324.6
D 13 249 406066 1246.93 1384 1330 324.6

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