ASTROSAT CZTI

Data Quality Report

Orbit 29345

Creation date: 2024-06-27T20:03:03.369757
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/AS1T03_279T01_9000004218_29345cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29345cztM0_level2_quad_clean.evt
Size (bytes)827,101,44084,994,560
Size788.8 MB 81.1 MB
Events in quadrant A3,975,833540,636
Events in quadrant B5,067,454541,530
Events in quadrant C4,300,835501,627
Events in quadrant D11,189,812459,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166002
B0198742
C0173492
D0386032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76142503.283425%
B76147499.837142%
C76145246.882059%
D7614276636.327817%

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 7834 7615 30 30 0.38% 0.39%
B 7834 7615 329 329 4.20% 4.32%
C 7834 7615 9 9 0.11% 0.12%
D 7834 7615 2083 2083 26.59% 27.35%

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 223523 1137.74 965 944 195.6
A 0 13 21156 103.32 965 944 195.6
A 13 254 16231 78.14 965 944 195.6
B 5 172 1254737 7045.48 927 903 178.0
B 5 255 44453 244.71 927 903 178.0
B 10 245 22099 119.1 927 903 178.0
C 14 238 240992 1120.52 907 911 214.3
C 3 233 197206 916.16 907 911 214.3
C 14 254 139167 645.28 907 911 214.3
D 12 33 3846880 19768.44 807 783 194.6
D 1 52 1726088 8867.84 807 783 194.6
D 7 80 1359861 6985.48 807 783 194.6

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