ASTROSAT CZTI

Data Quality Report

Orbit 18574

Creation date: 2024-06-27T17:51:39.881823
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/AS1A05_075T07_9000002760_18574cztM0_level2.evt modeM0/AS1A05_075T07_9000002760_18574cztM0_level2_quad_clean.evt
Size (bytes)447,912,00059,322,240
Size427.2 MB 56.6 MB
Events in quadrant A2,461,252368,091
Events in quadrant B2,496,922376,785
Events in quadrant C3,534,459351,008
Events in quadrant D4,723,587340,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137863114
B0137773092
C0170293277
D0208073115

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013430
B013430
C013424
D013329

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5128330.643526%
B5109641.252691%
C51174248.286105%
D514069013.424125%

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 6662 5318 0 0 0.00% 0.00%
B 6682 5286 1 1 0.01% 0.02%
C 6539 5299 198 198 3.03% 3.74%
D 6669 5325 510 510 7.65% 9.58%

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 14 111 14258 105.59 634 621 129.1
A 13 254 7873 56.15 634 621 129.1
A 0 226 5485 37.66 634 621 129.1
B 12 111 14871 115.26 631 614 123.7
B 11 111 12823 98.71 631 614 123.7
B 14 111 10566 80.46 631 614 123.7
C 9 54 1050553 7415.46 600 605 141.6
C 14 238 92882 651.72 600 605 141.6
C 4 254 48614 339.07 600 605 141.6
D 1 52 1654082 11644.44 580 562 142.0
D 7 238 850800 5987.56 580 562 142.0
D 2 234 19624 134.24 580 562 142.0

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