ASTROSAT CZTI

Data Quality Report

Orbit 27569

Creation date: 2024-06-27T19:41:38.084622
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/AS1A09_038T14_9000003964_27569cztM0_level2.evt modeM0/AS1A09_038T14_9000003964_27569cztM0_level2_quad_clean.evt
Size (bytes)171,149,76035,098,560
Size163.2 MB 33.5 MB
Events in quadrant A1,043,069235,164
Events in quadrant B1,391,285233,040
Events in quadrant C1,025,678230,189
Events in quadrant D1,583,951217,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042580
B053540
C042070
D060320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2013251.241927%
B20131417.004471%
C2013351.738698%
D2013994.918033%

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 2933 2014 2 2 0.07% 0.10%
B 2933 2014 88 88 3.00% 4.37%
C 2933 2014 0 0 0.00% 0.00%
D 2933 2014 77 77 2.63% 3.82%

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 8 192 9389 165.54 266 261 55.1
A 13 254 3644 61.35 266 261 55.1
A 13 248 3131 52.05 266 261 55.1
B 10 245 334190 6466.15 259 252 51.6
B 15 32 12352 234.3 259 252 51.6
B 0 230 11694 221.56 259 252 51.6
C 14 238 40693 665.93 250 250 60.7
C 14 67 7509 119.53 250 250 60.7
C 13 61 1725 24.29 250 250 60.7
D 1 52 431209 6984.28 250 241 61.7
D 12 233 111259 1799.16 250 241 61.7
D 2 250 42527 685.29 250 241 61.7

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