ASTROSAT CZTI

Data Quality Report

Orbit 58725

Creation date: 2026-08-05T13:38:02.774484
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_004T06_9000006594_58725cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58725cztM0_level2_quad_clean.evt
Size (bytes)1,471,129,920262,987,200
Size1.4 GB 250.8 MB
Events in quadrant A16,760,9181,676,815
Events in quadrant B12,030,0901,771,926
Events in quadrant C10,290,5891,677,404
Events in quadrant D13,911,9531,530,928

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0648122416
B0500601076
C0456471267
D0562981824

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03915
B03928
C03926
D03915

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1892011165.898520%
B1895912876.788333%
C189404602.428722%
D1893211025.820832%

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 20843 19010 655 655 3.14% 3.45%
B 20874 19044 838 838 4.01% 4.40%
C 20900 19022 367 367 1.76% 1.93%
D 20874 19022 955 955 4.58% 5.02%

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 14 8148309 16375.56 2033 1980 497.5
A 4 249 432514 865.45 2033 1980 497.5
A 10 251 114123 225.43 2033 1980 497.5
B 5 172 1435859 3353.0 1990 1913 427.7
B 6 255 897505 2094.17 1990 1913 427.7
B 8 234 614125 1431.54 1990 1913 427.7
C 4 5 923220 1693.1 2008 1992 544.1
C 13 3 584217 1070.05 2008 1992 544.1
C 14 254 439959 804.93 2008 1992 544.1
D 11 129 3401485 6121.29 1967 1879 555.4
D 2 62 1150049 2067.38 1967 1879 555.4
D 2 120 403597 723.33 1967 1879 555.4

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