ASTROSAT CZTI

Data Quality Report

Orbit 54546

Creation date: 2025-10-28T08:05:19.833826
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_127T09_9000006520_54546cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54546cztM0_level2_quad_clean.evt
Size (bytes)437,880,960108,132,480
Size417.6 MB 103.1 MB
Events in quadrant A3,445,955718,295
Events in quadrant B3,665,665767,596
Events in quadrant C5,002,611650,547
Events in quadrant D3,537,845639,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154222
B0159732
C0200882
D0156912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7156831.159866%
B71571351.886265%
C71575117.139863%
D7157871.215593%

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 9461 7158 26 26 0.27% 0.36%
B 9462 7157 20 20 0.21% 0.28%
C 9462 7159 382 382 4.04% 5.34%
D 9462 7159 26 26 0.27% 0.36%

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 11 3 171136 852.2 810 789 199.9
A 4 249 51891 255.65 810 789 199.9
A 4 3 30160 146.94 810 789 199.9
B 10 247 171579 984.82 805 775 173.4
B 8 234 95316 545.1 805 775 173.4
B 0 213 63750 363.1 805 775 173.4
C 12 254 578096 2729.24 769 762 211.5
C 13 3 575100 2715.08 769 762 211.5
C 1 45 400319 1888.83 769 762 211.5
D 6 239 149915 670.46 783 749 222.5
D 15 170 65196 289.67 783 749 222.5
D 5 173 52180 231.17 783 749 222.5

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