ASTROSAT CZTI

Data Quality Report

Orbit 24384

Creation date: 2024-06-27T19:05:26.195918
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/AS1A08_008T01_9000003596_24384cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24384cztM0_level2_quad_clean.evt
Size (bytes)1,707,629,760255,130,560
Size1.6 GB 243.3 MB
Events in quadrant A8,085,7541,702,286
Events in quadrant B8,144,6461,728,033
Events in quadrant C25,412,7851,454,357
Events in quadrant D8,896,1231,637,187

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357403
B0355933
C0879143
D0379433

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174741650.944260%
B174741450.829804%
C17474524229.998855%
D174741460.835527%

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 19514 17477 34 34 0.17% 0.19%
B 19514 17477 2 2 0.01% 0.01%
C 19514 17477 3698 3698 18.95% 21.16%
D 19514 17477 47 47 0.24% 0.27%

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 6 10 109903 260.74 2069 2021 413.8
A 13 254 27328 61.16 2069 2021 413.8
A 3 137 18774 40.49 2069 2021 413.8
B 12 111 48990 120.28 2064 2009 390.6
B 11 111 43234 105.54 2064 2009 390.6
B 14 111 38494 93.41 2064 2009 390.6
C 7 247 17748311 41542.11 1842 1854 427.2
C 14 238 286508 666.34 1842 1854 427.2
C 2 16 158219 366.03 1842 1854 427.2
D 12 233 355236 722.34 2012 1951 489.1
D 8 195 327304 665.23 2012 1951 489.1
D 1 52 242458 491.75 2012 1951 489.1

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