ASTROSAT CZTI

Data Quality Report

Orbit 55321

Creation date: 2025-12-20T14:09:33.118085
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/AS1A14_009T01_9000006534_55321cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55321cztM0_level2_quad_clean.evt
Size (bytes)487,808,640105,431,040
Size465.2 MB 100.5 MB
Events in quadrant A5,148,643653,253
Events in quadrant B3,345,151741,526
Events in quadrant C3,909,919661,312
Events in quadrant D5,072,121615,508

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01533
B01544
C01531
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021240523
B015995302
C017654358
D020749265

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74714926.585464%
B7473500.669075%
C74761081.444623%
D74872503.339121%

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 8295 7512 456 456 5.50% 6.07%
B 8297 7516 14 14 0.17% 0.19%
C 8285 7523 110 110 1.33% 1.46%
D 8282 7530 260 260 3.14% 3.45%

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 78 997902 5247.18 775 754 190.0
A 0 8 920817 4841.55 775 754 190.0
A 4 44 71872 374.24 775 754 190.0
B 0 199 93616 542.61 791 760 171.1
B 7 252 36621 209.56 791 760 171.1
B 2 249 25737 145.96 791 760 171.1
C 15 147 454392 2140.22 781 775 211.9
C 15 131 127458 597.7 781 775 211.9
C 12 252 87887 411.0 781 775 211.9
D 6 239 722889 3312.3 770 737 218.0
D 3 12 420366 1924.72 770 737 218.0
D 15 42 369834 1692.94 770 737 218.0

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