ASTROSAT CZTI

Data Quality Report

Orbit 51912

Creation date: 2025-05-04T01:14:19.941179
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/AS1C09_011T05_9000006466_51912cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51912cztM0_level2_quad_clean.evt
Size (bytes)946,952,64073,857,600
Size903.1 MB 70.4 MB
Events in quadrant A8,570,277490,834
Events in quadrant B7,794,310540,372
Events in quadrant C10,081,896387,480
Events in quadrant D8,097,651357,526

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301043
B0277951
C0344561
D0285911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6588161624.529447%
B6589162124.601609%
C6589264140.081955%
D6589254838.670511%

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 7524 6588 1304 1304 17.33% 19.79%
B 7525 6590 1271 1271 16.89% 19.29%
C 7524 6588 2368 2368 31.47% 35.94%
D 7525 6589 1428 1428 18.98% 21.67%

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 7 64 2007761 13087.52 611 597 153.4
A 12 3 1951537 12720.92 611 597 153.4
A 3 95 1328350 8657.49 611 597 153.4
B 12 32 3519851 26628.81 626 606 132.2
B 5 32 647211 4892.62 626 606 132.2
B 5 172 233899 1765.24 626 606 132.2
C 15 158 4431740 27892.75 572 567 158.9
C 9 38 1884980 11861.75 572 567 158.9
C 15 178 272790 1713.55 572 567 158.9
D 12 17 3418744 24744.99 482 461 138.1
D 6 42 1041599 7536.81 482 461 138.1
D 15 94 616878 4462.25 482 461 138.1

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