ASTROSAT CZTI

Data Quality Report

Orbit 16954

Creation date: 2024-06-27T17:29:59.017218
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_206T01_9000002518_16954cztM0_level2.evt modeM0/AS1A05_206T01_9000002518_16954cztM0_level2_quad_clean.evt
Size (bytes)587,551,68098,046,720
Size560.3 MB 93.5 MB
Events in quadrant A4,060,614618,608
Events in quadrant B4,320,842622,099
Events in quadrant C4,221,938601,496
Events in quadrant D4,670,914593,556

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172662
B0177553
C0172382
D0190692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76543344.363731%
B76542543.318526%
C76542122.769794%
D76543764.912464%

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 7820 7656 106 106 1.36% 1.38%
B 7820 7656 28 28 0.36% 0.37%
C 7820 7656 1 1 0.01% 0.01%
D 7820 7656 189 189 2.42% 2.47%

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 15 174 541197 2892.92 910 886 186.8
A 12 189 14086 70.68 910 886 186.8
A 0 226 8217 39.25 910 886 186.8
B 15 33 164544 926.84 914 888 176.6
B 15 35 159978 900.98 914 888 176.6
B 5 250 126281 710.14 914 888 176.6
C 3 233 648581 3155.18 881 886 205.3
C 14 238 133510 646.07 881 886 205.3
C 13 61 6207 25.92 881 886 205.3
D 15 0 383006 1772.08 888 859 215.6
D 1 52 377179 1745.06 888 859 215.6
D 13 187 206625 954.17 888 859 215.6

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