ASTROSAT CZTI

Data Quality Report

Orbit 15278

Creation date: 2024-06-27T17:06:14.313878
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/AS1A04_207T01_9000002254_15278cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15278cztM0_level2_quad_clean.evt
Size (bytes)619,476,480109,679,040
Size590.8 MB 104.6 MB
Events in quadrant A4,346,924672,991
Events in quadrant B4,485,668683,271
Events in quadrant C4,867,680677,016
Events in quadrant D4,432,024645,365

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190591
B0191751
C0194071
D0198261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9266660.712281%
B9266660.712281%
C9266470.507231%
D92661161.251889%

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 9817 9267 7 7 0.07% 0.08%
B 9817 9267 10 10 0.10% 0.11%
C 9817 9267 1 1 0.01% 0.01%
D 9817 9268 61 61 0.62% 0.66%

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 12 189 127738 575.83 1080 1055 220.0
A 9 143 61570 275.07 1080 1055 220.0
A 0 226 9489 38.34 1080 1055 220.0
B 4 142 47421 222.43 1080 1050 208.5
B 0 205 42934 200.9 1080 1050 208.5
B 0 229 38581 180.02 1080 1050 208.5
C 3 233 767354 3159.05 1049 1053 242.6
C 10 22 9330 34.12 1049 1053 242.6
C 13 61 7565 26.85 1049 1053 242.6
D 2 33 284892 1119.93 1043 1012 253.5
D 7 38 124260 486.23 1043 1012 253.5
D 2 234 37231 142.89 1043 1012 253.5

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