ASTROSAT CZTI

Data Quality Report

Orbit 58125

Creation date: 2026-06-29T13:47:23.892935
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_042T02_9000006586_58125cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58125cztM0_level2_quad_clean.evt
Size (bytes)1,022,503,68080,115,840
Size975.1 MB 76.4 MB
Events in quadrant A3,827,286690,526
Events in quadrant B11,845,637509,411
Events in quadrant C3,803,847663,841
Events in quadrant D17,799,12546,141

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167740
B0402900
C0168070
D0577061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74072483.348184%
B7407286938.733630%
C74071231.660591%
D7407697394.140678%

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 7407 7407 159 159 2.15% 2.15%
B 7407 7407 2458 2458 33.18% 33.18%
C 7407 7407 114 114 1.54% 1.54%
D 7407 7406 6443 6443 86.99% 87.00%

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 563276 2863.42 789 768 196.4
A 3 245 47940 240.13 789 768 196.4
A 2 79 43634 218.21 789 768 196.4
B 10 128 8258733 55816.52 680 652 148.0
B 5 172 335384 2262.46 680 652 148.0
B 2 249 201528 1357.72 680 652 148.0
C 15 208 430516 2039.04 766 762 210.8
C 6 223 211114 998.05 766 762 210.8
C 12 252 121341 572.11 766 762 210.8
D 12 110 15839795 139407.88 397 379 113.6
D 8 240 193535 1700.03 397 379 113.6
D 2 249 71401 625.09 397 379 113.6

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