ASTROSAT CZTI

Data Quality Report

Orbit 20190828_A05_062T01_9000003132_level2

Creation date: 2019-08-29T17:29:25.976352
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_062T01_9000003132cztM0_level2_bc.evt modeM0/AS1A05_062T01_9000003132cztM0_level2_quad_clean.evt
Size (bytes)2,067,848,640582,500,160
Size1.9 GB 555.5 MB
Events in quadrant A10,599,2303,732,938
Events in quadrant B11,001,8453,797,356
Events in quadrant C9,463,4413,653,008
Events in quadrant D28,483,2453,356,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09180
B09180
C09180
D09180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0978990
B0988570
C0946780
D01582570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A452076111.351561%
B452077071.563917%
C452077661.694428%
D4520736037.970005%

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 52917 45209 24 24 0.05% 0.05%
B 52917 45210 29 29 0.05% 0.06%
C 52917 45208 2 2 0.00% 0.00%
D 52917 45208 641 641 1.21% 1.42%

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 10 229 785162 1491.37 2436 2400 524.9
A 5 16 319880 604.89 2436 2400 524.9
A 13 254 63586 116.58 2436 2400 524.9
B 3 64 250174 531.51 2473 2415 466.1
B 0 182 231117 490.63 2473 2415 466.1
B 0 230 183415 388.29 2473 2415 466.1
C 3 233 320274 580.33 2342 2328 547.9
C 0 10 84740 150.42 2342 2328 547.9
C 10 91 22879 37.51 2342 2328 547.9
D 7 238 8490922 15969.99 2305 2226 531.5
D 1 52 4206301 7909.23 2305 2226 531.5
D 1 20 2596485 4880.64 2305 2226 531.5

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