ASTROSAT CZTI

Data Quality Report

Orbit 44861

Creation date: 2024-06-27T23:07:20.432212
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/AS1A13_017T01_9000006028_44861cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44861cztM0_level2_quad_clean.evt
Size (bytes)1,584,794,880337,711,680
Size1.5 GB 322.1 MB
Events in quadrant A15,633,1792,297,678
Events in quadrant B10,207,0902,377,867
Events in quadrant C10,517,1252,238,113
Events in quadrant D20,644,3041,830,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0648975
B0458901
C0473361
D0767261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04300
B04300
C04300
D04300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215113011.399284%
B215131940.901780%
C215132841.320132%
D21514287213.349447%

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 44364 21513 50 50 0.11% 0.23%
B 44364 21515 58 58 0.13% 0.27%
C 44364 21515 200 200 0.45% 0.93%
D 44365 21516 2350 2350 5.30% 10.92%

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 10 83 6157191 12547.9 2372 2323 490.5
A 13 248 273481 552.81 2372 2323 490.5
A 3 137 27690 51.72 2372 2323 490.5
B 5 255 278409 596.04 2365 2290 463.3
B 0 155 115069 243.45 2365 2290 463.3
B 0 183 95962 202.2 2365 2290 463.3
C 1 3 663010 1208.22 2317 2322 546.8
C 12 250 388875 706.9 2317 2322 546.8
C 14 254 179176 323.42 2317 2322 546.8
D 13 174 3625938 6584.49 2193 2124 550.4
D 5 235 2757312 5006.2 2193 2124 550.4
D 1 52 1696403 3078.52 2193 2124 550.4

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