ASTROSAT CZTI

Data Quality Report

Orbit 33911

Creation date: 2024-06-27T20:54:05.633902
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/AS1T04_091T01_9000004842_33911cztM0_level2.evt modeM0/AS1T04_091T01_9000004842_33911cztM0_level2_quad_clean.evt
Size (bytes)2,101,809,600211,014,720
Size2.0 GB 201.2 MB
Events in quadrant A20,275,2191,067,672
Events in quadrant B10,946,4511,397,624
Events in quadrant C10,213,4541,385,760
Events in quadrant D20,979,9021,267,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07257311
B0448703
C0417613
D0749013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18436491126.638099%
B184377404.013668%
C184371941.052232%
D18437295316.016706%

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 24586 18434 3448 3448 14.02% 18.70%
B 24587 18441 406 406 1.65% 2.20%
C 24587 18441 138 138 0.56% 0.75%
D 24587 18439 2248 2248 9.14% 12.19%

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 15 169 13313728 38552.81 1740 1702 345.3
A 7 16 198932 571.2 1740 1702 345.3
A 13 254 25035 67.57 1740 1702 345.3
B 5 172 1941348 4922.49 2083 2027 394.0
B 4 251 261713 659.15 2083 2027 394.0
B 0 219 97136 241.41 2083 2027 394.0
C 15 214 800196 1696.43 2058 2070 470.5
C 0 10 587580 1244.51 2058 2070 470.5
C 0 207 400559 846.99 2058 2070 470.5
D 8 195 4398231 9438.21 1918 1868 465.8
D 1 52 2998245 6432.69 1918 1868 465.8
D 12 235 2959571 6349.66 1918 1868 465.8

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