ASTROSAT CZTI

Data Quality Report

Orbit 58632

Creation date: 2026-07-30T06:11:42.355156
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_58632cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58632cztM0_level2_quad_clean.evt
Size (bytes)650,626,560101,160,000
Size620.5 MB 96.5 MB
Events in quadrant A4,050,728689,918
Events in quadrant B3,753,623744,860
Events in quadrant C10,434,778499,593
Events in quadrant D5,278,534619,731

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173442
B0163933
C0360532
D0207082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73032333.190470%
B73021732.369214%
C7303220130.138299%
D73034225.778447%

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 8688 7305 87 87 1.00% 1.19%
B 8687 7304 47 47 0.54% 0.64%
C 8688 7305 2060 2060 23.71% 28.20%
D 8688 7305 303 303 3.49% 4.15%

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 4 249 730498 3640.12 800 777 200.5
A 12 114 81263 401.49 800 777 200.5
A 10 251 55357 272.27 800 777 200.5
B 8 128 180889 1059.42 796 767 170.0
B 6 255 118210 690.76 796 767 170.0
B 8 234 106891 624.18 796 767 170.0
C 15 217 5389153 29199.21 676 671 184.5
C 15 164 1453655 7873.46 676 671 184.5
C 12 254 449056 2429.72 676 671 184.5
D 8 240 1172893 5410.89 769 735 216.6
D 2 249 476770 2197.46 769 735 216.6
D 8 160 169895 780.87 769 735 216.6

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