ASTROSAT CZTI

Data Quality Report

Orbit 20210309_A10_094T02_9000004238_level2

Creation date: 2021-03-15T08:51:50.843906
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/AS1A10_094T02_9000004238cztM0_level2_bc.evt modeM0/AS1A10_094T02_9000004238cztM0_level2_quad_clean.evt
Size (bytes)750,867,840154,206,720
Size716.1 MB 147.1 MB
Events in quadrant A2,083,5451,092,462
Events in quadrant B2,098,4651,122,504
Events in quadrant C2,163,7031,065,764
Events in quadrant D15,761,748748,876

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194020
B0194710
C0201860
D0644930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9209460.499511%
B9209500.542947%
C92092202.388967%
D9209598665.001629%

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 11484 9210 3 3 0.03% 0.03%
B 11484 9210 0 0 0.00% 0.00%
C 11484 9209 0 0 0.00% 0.00%
D 11484 9208 2467 2467 21.48% 26.79%

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 13 88433 787.08 514 507 111.7
A 13 254 17021 147.83 514 507 111.7
A 1 113 4363 34.52 514 507 111.7
B 5 255 19830 194.69 523 514 99.2
B 0 230 15977 155.85 523 514 99.2
B 0 190 15573 151.78 523 514 99.2
C 3 233 192833 1622.59 496 493 118.5
C 14 254 39399 328.21 496 493 118.5
C 2 114 18212 149.48 496 493 118.5
D 8 195 9438443 102576.63 393 381 92.0
D 12 33 2928529 31824.28 393 381 92.0
D 1 52 1528088 16603.73 393 381 92.0

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