ASTROSAT CZTI

Data Quality Report

Orbit 16738

Creation date: 2024-06-27T17:27:02.603452
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_202T01_9000002484_16738cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16738cztM0_level2_quad_clean.evt
Size (bytes)704,649,600138,879,360
Size672.0 MB 132.4 MB
Events in quadrant A6,764,238876,585
Events in quadrant B4,237,706953,206
Events in quadrant C4,009,050913,381
Events in quadrant D5,768,743887,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258463
B0181532
C0172852
D0227852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8277110013.289839%
B82771451.751842%
C82771221.473964%
D82772793.370787%

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 8793 8281 698 698 7.94% 8.43%
B 8793 8281 25 25 0.28% 0.30%
C 8793 8281 10 10 0.11% 0.12%
D 8793 8281 148 148 1.68% 1.79%

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 3130422 17026.21 911 890 183.8
A 0 23 112381 606.57 911 890 183.8
A 0 226 14355 73.26 911 890 183.8
B 10 16 162817 876.8 974 949 184.6
B 15 35 115755 621.87 974 949 184.6
B 7 220 40990 216.89 974 949 184.6
C 0 207 171017 779.59 929 931 218.2
C 14 238 146392 666.72 929 931 218.2
C 3 233 48298 217.1 929 931 218.2
D 1 52 1308302 5769.26 928 900 226.6
D 2 16 397248 1748.99 928 900 226.6
D 10 70 296661 1305.12 928 900 226.6

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