ASTROSAT CZTI

Data Quality Report

Orbit 53240

Creation date: 2025-08-01T10:04:48.761910
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_011T08_9000006492_53240cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53240cztM0_level2_quad_clean.evt
Size (bytes)719,360,64085,734,720
Size686.0 MB 81.8 MB
Events in quadrant A5,306,423576,684
Events in quadrant B7,819,324538,079
Events in quadrant C8,548,089474,158
Events in quadrant D4,448,096549,952

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204641
B0276851
C0299771
D0179811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65455848.922842%
B6545144522.077922%
C6546160424.503514%
D65461973.009471%

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 7550 6546 527 527 6.98% 8.05%
B 7550 6546 1037 1037 13.74% 15.84%
C 7551 6547 1486 1486 19.68% 22.70%
D 7551 6547 191 191 2.53% 2.92%

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 3 62 1582790 10014.27 637 620 158.0
A 7 206 369827 2336.88 637 620 158.0
A 0 8 333219 2105.17 637 620 158.0
B 12 33 2442858 19026.48 609 588 128.4
B 2 249 1817372 14153.64 609 588 128.4
B 10 254 431546 3357.37 609 588 128.4
C 1 241 3521997 22178.98 573 568 158.8
C 15 224 1618139 10187.93 573 568 158.8
C 4 5 568919 3579.64 573 568 158.8
D 15 125 463167 2587.89 627 598 178.7
D 10 172 344944 1926.48 627 598 178.7
D 12 3 227655 1270.29 627 598 178.7

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