ASTROSAT CZTI

Data Quality Report

Orbit 47907

Creation date: 2024-08-07T03:13:38.399591
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/AS1A09_038T41_9000006376_47907cztM0_level2.fits modeM0/AS1A09_038T41_9000006376_47907cztM0_level2_quad_clean.evt
Size (bytes)445,213,440103,250,880
Size424.6 MB 98.5 MB
Events in quadrant A7,228,655644,273
Events in quadrant B3,067,615708,645
Events in quadrant C2,737,680690,341
Events in quadrant D2,940,998629,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257772
B0138682
C0131432
D0137772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65065939.114663%
B6507841.290917%
C6507180.276625%
D6507380.583986%

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 7536 6507 285 285 3.78% 4.38%
B 7537 6508 22 22 0.29% 0.34%
C 7537 6508 1 1 0.01% 0.02%
D 7537 6508 13 13 0.17% 0.20%

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 3958150 27858.18 683 668 142.1
A 13 248 610841 4295.23 683 668 142.1
A 3 137 8084 52.2 683 668 142.1
B 5 32 68399 495.39 704 682 136.7
B 0 200 57253 413.85 704 682 136.7
B 0 198 38544 276.98 704 682 136.7
C 14 67 8470 47.44 695 698 163.8
C 12 2 7428 41.08 695 698 163.8
C 12 250 6808 37.29 695 698 163.8
D 14 34 59522 341.98 688 665 172.1
D 2 37 43418 248.41 688 665 172.1
D 2 249 36170 206.3 688 665 172.1

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