ASTROSAT CZTI

Data Quality Report

Orbit 20230530_A12_014T01_9000005674_level2

Creation date: 2023-06-01T15:42:45.487089
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A12_014T01_9000005674cztM0_level2.fits modeM0/AS1A12_014T01_9000005674cztM0_level2_quad_clean.evt
Size (bytes)303,799,680413,798,400
Size289.7 MB 394.6 MB
Events in quadrant A1,817,4582,634,604
Events in quadrant B1,756,5422,679,512
Events in quadrant C1,749,5042,552,843
Events in quadrant D1,524,6762,314,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07020
B07020
C07020
D07020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01530
B01530
C01530
D01530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0731100
B0732930
C0799720
D0956000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34224760.222066%
B342242190.639902%
C3422412583.675783%
D3422411003.214119%

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 49584 34224 0 0 0.00% 0.00%
B 49584 34198 0 0 0.00% 0.00%
C 49584 33975 0 0 0.00% 0.00%
D 49584 34217 0 0 0.00% 0.00%

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 29 1495 8.63 475 448 121.3
A 7 110 1477 8.49 475 448 121.3
A 9 19 1466 8.4 475 448 121.3
B 2 9 1532 11.91 465 446 91.2
B 5 128 1266 8.99 465 446 91.2
B 3 80 1250 8.82 465 446 91.2
C 1 81 1507 8.87 462 434 121.0
C 1 80 1422 8.16 462 434 121.0
C 3 203 1345 7.53 462 434 121.0
D 10 189 1176 6.57 436 395 118.9
D 7 3 1150 6.35 436 395 118.9
D 4 160 1149 6.34 436 395 118.9

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