ASTROSAT CZTI

Data Quality Report

Orbit 56614

Creation date: 2026-03-16T12:05:21.239977
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_083T06_9000006558_56614cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56614cztM0_level2_quad_clean.evt
Size (bytes)442,944,00098,991,360
Size422.4 MB 94.4 MB
Events in quadrant A3,020,837651,138
Events in quadrant B3,617,951700,503
Events in quadrant C4,543,575596,848
Events in quadrant D4,667,698559,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144730
B0157810
C0184920
D0188060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7024220.313212%
B7024781.110478%
C70243024.299544%
D70242844.043280%

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 7024 7024 13 13 0.19% 0.19%
B 7024 7024 55 55 0.78% 0.78%
C 7024 7024 184 184 2.62% 2.62%
D 7024 7024 328 328 4.67% 4.67%

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 13 248 114822 630.79 736 721 180.9
A 13 254 14993 78.9 736 721 180.9
A 3 62 11275 58.35 736 721 180.9
B 0 231 344121 2169.91 735 707 158.3
B 8 128 112258 704.85 735 707 158.3
B 0 213 44720 278.1 735 707 158.3
C 15 219 938286 4806.76 708 701 195.1
C 9 38 153289 782.28 708 701 195.1
C 12 252 122405 623.95 708 701 195.1
D 5 32 845417 4247.65 702 671 198.9
D 2 249 258651 1297.2 702 671 198.9
D 6 239 214493 1075.16 702 671 198.9

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