ASTROSAT CZTI

Data Quality Report

Orbit 41005

Creation date: 2024-06-27T22:23:47.148422
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/AS1A12_042T01_9000005588_41005cztM0_level2.fits modeM0/AS1A12_042T01_9000005588_41005cztM0_level2_quad_clean.evt
Size (bytes)319,890,24093,090,240
Size305.1 MB 88.8 MB
Events in quadrant A3,054,491620,669
Events in quadrant B2,613,859641,385
Events in quadrant C2,701,206604,090
Events in quadrant D3,025,569551,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123813
B0117622
C0116972
D0131412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5725110.192140%
B5725140.244541%
C5725160.279476%
D57251081.886463%

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 7248 5726 4 4 0.06% 0.07%
B 7248 5726 9 9 0.12% 0.16%
C 7248 5726 11 11 0.15% 0.19%
D 7248 5726 99 99 1.37% 1.73%

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 560326 4342.88 629 616 128.9
A 12 189 59620 457.82 629 616 128.9
A 13 254 9696 70.45 629 616 128.9
B 15 85 59301 482.67 627 609 121.6
B 0 186 35429 286.35 627 609 121.6
B 0 199 29004 233.52 627 609 121.6
C 15 214 245464 1704.87 610 611 143.6
C 0 10 38212 261.81 610 611 143.6
C 12 249 30724 209.67 610 611 143.6
D 2 249 202979 1382.8 605 587 146.4
D 13 249 197497 1345.35 605 587 146.4
D 2 153 103744 704.8 605 587 146.4

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