ASTROSAT CZTI

Data Quality Report

Orbit 58982

Creation date: 2026-08-22T19:13:33.919668
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_004T07_9000006598_58982cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58982cztM0_level2_quad_clean.evt
Size (bytes)910,621,44099,443,520
Size868.4 MB 94.8 MB
Events in quadrant A10,199,550561,506
Events in quadrant B5,812,524771,329
Events in quadrant C3,611,864735,041
Events in quadrant D13,471,560392,346

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357130
B0225680
C0165621
D0453910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7916228828.903487%
B79166438.122789%
C7915100.126342%
D7916377347.662961%

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 7916 7916 1867 1867 23.59% 23.59%
B 7916 7916 412 412 5.20% 5.20%
C 7915 7915 5 5 0.06% 0.06%
D 7916 7916 3759 3759 47.49% 47.49%

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 14 238 6699327 35640.66 763 742 187.9
A 0 24 250862 1330.79 763 742 187.9
A 3 14 157080 831.82 763 742 187.9
B 4 171 781362 4283.21 847 817 182.2
B 10 247 682212 3739.13 847 817 182.2
B 0 157 365050 1998.72 847 817 182.2
C 12 252 63644 265.71 865 858 236.3
C 12 249 51276 213.37 865 858 236.3
C 14 254 25699 105.13 865 858 236.3
D 12 110 9609582 44454.05 760 726 216.2
D 6 239 255032 1176.51 760 726 216.2
D 2 249 175096 806.7 760 726 216.2

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