ASTROSAT CZTI

Data Quality Report

Orbit 54636

Creation date: 2025-11-03T10:32:32.261377
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_066T07_9000006522_54636cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54636cztM0_level2_quad_clean.evt
Size (bytes)568,509,120125,951,040
Size542.2 MB 120.1 MB
Events in quadrant A5,330,396820,344
Events in quadrant B4,130,073885,010
Events in quadrant C5,305,745765,036
Events in quadrant D5,604,666741,385

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221452
B0188112
C0222615
D0227552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86733624.173873%
B86742302.651602%
C86733994.600484%
D86732302.651908%

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 9318 8675 221 221 2.37% 2.55%
B 9319 8676 19 19 0.20% 0.22%
C 9318 8675 264 264 2.83% 3.04%
D 9318 8675 191 191 2.05% 2.20%

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 7 190 818484 3426.35 976 951 238.6
A 11 3 333663 1394.42 976 951 238.6
A 3 62 114901 477.57 976 951 238.6
B 10 247 61705 284.33 980 942 213.7
B 0 151 38437 175.45 980 942 213.7
B 4 216 30539 138.5 980 942 213.7
C 9 38 644949 2474.91 951 947 260.2
C 13 3 350941 1345.04 951 947 260.2
C 6 223 191280 731.45 951 947 260.2
D 8 240 463488 1726.9 948 909 267.9
D 6 239 398844 1485.57 948 909 267.9
D 3 12 370770 1380.77 948 909 267.9

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