ASTROSAT CZTI

Data Quality Report

Orbit 54070

Creation date: 2025-09-26T07:33:39.229271
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_041T01_9000006510_54070cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54070cztM0_level2_quad_clean.evt
Size (bytes)546,500,160113,535,360
Size521.2 MB 108.3 MB
Events in quadrant A4,119,256751,491
Events in quadrant B4,406,643810,741
Events in quadrant C4,088,970717,055
Events in quadrant D6,994,642602,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183253
B0190762
C0181992
D0266442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79811191.491041%
B79812312.894374%
C79821461.829116%
D798290211.300426%

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 8471 7982 76 76 0.90% 0.95%
B 8471 7981 121 121 1.43% 1.52%
C 8472 7983 118 118 1.39% 1.48%
D 8472 7984 912 912 10.76% 11.42%

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 15 174 402749 1927.64 843 822 208.5
A 12 115 158433 755.9 843 822 208.5
A 14 235 56066 264.95 843 822 208.5
B 5 236 425333 2370.05 843 811 179.1
B 7 252 259164 1442.35 843 811 179.1
B 0 213 94199 521.37 843 811 179.1
C 15 233 578264 2521.21 833 824 229.0
C 14 254 58462 251.66 833 824 229.0
C 9 53 43979 188.42 833 824 229.0
D 8 176 2220875 9977.19 781 746 222.5
D 2 172 498853 2238.48 781 746 222.5
D 14 20 306382 1373.52 781 746 222.5

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