ASTROSAT CZTI

Data Quality Report

Orbit 23077

Creation date: 2024-06-27T18:49:27.785092
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/AS1A07_049T01_9000003408_23077cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23077cztM0_level2_quad_clean.evt
Size (bytes)620,187,84092,188,800
Size591.5 MB 87.9 MB
Events in quadrant A4,584,379564,316
Events in quadrant B3,919,738584,887
Events in quadrant C3,935,827564,803
Events in quadrant D5,807,858529,707

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187653
B0167633
C0167803
D0225724

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78783934.988576%
B78783043.858847%
C78793204.061429%
D78787129.037827%

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 8413 7882 127 127 1.51% 1.61%
B 8413 7882 5 5 0.06% 0.06%
C 8414 7882 13 13 0.15% 0.16%
D 8413 7882 385 385 4.58% 4.88%

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 16 847880 4362.19 965 941 194.2
A 13 254 10864 51.11 965 941 194.2
A 2 79 9181 42.44 965 941 194.2
B 3 64 41006 212.21 970 944 188.8
B 0 189 40980 212.08 970 944 188.8
B 12 111 23564 119.82 970 944 188.8
C 14 238 146287 660.73 934 939 220.0
C 0 10 127923 577.25 934 939 220.0
C 2 16 9689 39.78 934 939 220.0
D 1 52 2100706 9247.84 926 894 227.1
D 1 239 71238 309.8 926 894 227.1
D 13 104 66259 287.87 926 894 227.1

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