ASTROSAT CZTI

Data Quality Report

Orbit 59233

Creation date: 2026-09-08T17:28:34.521368
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/AS1T05_271T01_9000006604_59233cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59233cztM0_level2_quad_clean.evt
Size (bytes)1,357,309,440261,328,320
Size1.3 GB 249.2 MB
Events in quadrant A9,173,8151,758,340
Events in quadrant B9,104,1101,873,133
Events in quadrant C12,748,5641,607,583
Events in quadrant D17,763,7371,378,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409102
B0406342
C0512042
D0656512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187783681.959740%
B187785002.662690%
C1877911976.374141%
D18778199510.624135%

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 19688 18778 98 98 0.50% 0.52%
B 19688 18778 110 110 0.56% 0.59%
C 19689 18779 907 907 4.61% 4.83%
D 19688 18778 1932 1932 9.81% 10.29%

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 10 251 842624 1650.91 2067 2010 509.2
A 0 24 130698 252.74 2067 2010 509.2
A 3 14 66862 127.37 2067 2010 509.2
B 10 247 414625 942.05 2036 1956 438.1
B 4 236 178419 402.83 2036 1956 438.1
B 4 201 129515 291.19 2036 1956 438.1
C 5 250 2478899 4647.08 1968 1949 533.0
C 15 147 963397 1803.8 1968 1949 533.0
C 12 252 741402 1387.31 1968 1949 533.0
D 12 110 8066865 14845.0 1938 1854 543.3
D 11 129 1429802 2628.38 1938 1854 543.3
D 3 12 234110 427.51 1938 1854 543.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct