ASTROSAT CZTI

Data Quality Report

Orbit 25937

Creation date: 2024-06-27T19:23:01.065607
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/AS1T03_214T01_9000003758_25937cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25937cztM0_level2_quad_clean.evt
Size (bytes)466,283,52045,230,400
Size444.7 MB 43.1 MB
Events in quadrant A8,189,314108,081
Events in quadrant B1,772,729354,035
Events in quadrant C1,882,943337,487
Events in quadrant D2,053,265335,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265760
B072930
C077900
D082170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3276311194.963370%
B3276341.037851%
C3276862.625153%
D3276421.282051%

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 3276 3276 2830 2830 86.39% 86.39%
B 3276 3276 1 1 0.03% 0.03%
C 3276 3276 11 11 0.34% 0.34%
D 3276 3276 29 29 0.89% 0.89%

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 7490661 200914.94 180 177 37.3
A 13 254 1975 48.23 180 177 37.3
A 0 226 1444 33.98 180 177 37.3
B 0 190 17386 205.65 443 435 82.4
B 0 229 12651 148.2 443 435 82.4
B 12 111 9485 109.79 443 435 82.4
C 2 16 126587 1260.34 430 432 100.1
C 14 238 71376 708.76 430 432 100.1
C 3 233 10971 105.29 430 432 100.1
D 1 52 360743 3480.32 440 431 103.5
D 12 233 26386 250.7 440 431 103.5
D 2 234 11913 110.91 440 431 103.5

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