ASTROSAT CZTI

Data Quality Report

Orbit 12742

Creation date: 2024-06-27T16:31:49.373166
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/AS1G08_021T01_9000001880_12742cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12742cztM0_level2_quad_clean.evt
Size (bytes)612,722,880120,631,680
Size584.3 MB 115.0 MB
Events in quadrant A3,776,267792,572
Events in quadrant B4,742,531780,576
Events in quadrant C3,474,989786,632
Events in quadrant D6,020,212737,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167753
B0194432
C0161772
D0237482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8002420.524869%
B80023564.448888%
C8002110.137466%
D80023133.911522%

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 8758 8005 12 12 0.14% 0.15%
B 8758 8005 247 247 2.82% 3.09%
C 8758 8005 0 0 0.00% 0.00%
D 8758 8005 259 259 2.96% 3.24%

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 15 121406 648.7 916 896 185.8
A 15 222 65391 347.17 916 896 185.8
A 7 16 36843 193.5 916 896 185.8
B 4 239 1009549 5881.76 903 877 171.5
B 3 209 72177 415.76 903 877 171.5
B 3 64 39228 223.63 903 877 171.5
C 3 233 9024 39.31 889 890 206.9
C 13 61 6626 27.72 889 890 206.9
C 3 202 2150 6.09 889 890 206.9
D 1 52 2583618 12680.35 863 843 203.7
D 2 136 68128 330.34 863 843 203.7
D 2 234 30424 145.23 863 843 203.7

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