ASTROSAT CZTI

Data Quality Report

Orbit 58356

Creation date: 2026-07-11T16:18:12.958458
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_044T03_9000006588_58356cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58356cztM0_level2_quad_clean.evt
Size (bytes)765,227,52082,143,360
Size729.8 MB 78.3 MB
Events in quadrant A4,296,181626,461
Events in quadrant B9,236,463552,248
Events in quadrant C10,376,174226,009
Events in quadrant D3,867,654589,789

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177423
B0324003
C0357893
D0163053

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70685007.074137%
B7069196927.854010%
C7069470266.515773%
D70692463.479983%

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 7138 7071 206 206 2.89% 2.91%
B 7139 7072 1297 1297 18.17% 18.34%
C 7138 7069 1964 1964 27.51% 27.78%
D 7139 7072 52 52 0.73% 0.74%

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 8 246 463984 2409.09 778 756 192.3
A 12 80 316335 1641.22 778 756 192.3
A 8 249 142222 735.72 778 756 192.3
B 10 128 4263866 27728.77 719 693 153.7
B 3 238 931085 6051.51 719 693 153.7
B 6 255 444018 2883.5 719 693 153.7
C 15 148 8632971 82725.59 377 372 104.4
C 12 252 92576 883.58 377 372 104.4
C 6 13 53526 509.37 377 372 104.4
D 8 160 168441 779.6 770 737 215.1
D 3 12 145637 673.59 770 737 215.1
D 11 129 112198 518.14 770 737 215.1

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