ASTROSAT CZTI

Data Quality Report

Orbit 57846

Creation date: 2026-06-07T09:07:48.512022
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_125T11_9000006582_57846cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57846cztM0_level2_quad_clean.evt
Size (bytes)509,800,32093,839,040
Size486.2 MB 89.5 MB
Events in quadrant A2,945,836627,713
Events in quadrant B3,349,002670,760
Events in quadrant C8,511,677503,647
Events in quadrant D3,515,780547,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143482
B0151112
C0302404
D0157042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7062300.424809%
B70631101.557412%
C7062142520.178420%
D7062841.189465%

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 9486 7334 2 2 0.02% 0.03%
B 9487 7335 17 17 0.18% 0.23%
C 9485 7333 1102 1102 11.62% 15.03%
D 9486 7333 40 40 0.42% 0.55%

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 3 128 11359 57.78 754 735 183.9
A 3 137 9160 45.82 754 735 183.9
A 13 254 7905 38.99 754 735 183.9
B 4 142 155110 971.51 747 718 158.9
B 5 185 33435 205.87 747 718 158.9
B 2 249 28511 174.89 747 718 158.9
C 9 38 4513840 24566.68 676 671 183.7
C 15 224 1178360 6410.55 676 671 183.7
C 15 208 61305 330.05 676 671 183.7
D 2 153 176390 862.55 726 694 203.7
D 5 32 127482 622.45 726 694 203.7
D 12 110 105347 513.78 726 694 203.7

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