ASTROSAT CZTI

Data Quality Report

Orbit 53515

Creation date: 2025-08-19T23:04:20.721157
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_004T04_9000006500_53515cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53515cztM0_level2_quad_clean.evt
Size (bytes)688,412,16084,916,800
Size656.5 MB 81.0 MB
Events in quadrant A6,099,184572,284
Events in quadrant B4,236,934655,330
Events in quadrant C10,240,039355,103
Events in quadrant D4,423,622553,399

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224301
B0168341
C0347009
D0173641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A623580612.927025%
B62362884.618345%
C6235277744.538893%
D62353305.292702%

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 7334 6236 560 560 7.64% 8.98%
B 7336 6238 104 104 1.42% 1.67%
C 7335 6237 2339 2339 31.89% 37.50%
D 7334 6236 252 252 3.44% 4.04%

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 3 62 2023152 12372.21 658 641 163.5
A 15 174 992735 6068.89 658 641 163.5
A 3 63 363039 2216.88 658 641 163.5
B 4 171 707038 4913.02 678 655 143.8
B 2 249 240147 1665.71 678 655 143.8
B 10 28 147399 1020.63 678 655 143.8
C 1 241 2716443 19025.53 512 506 142.8
C 7 64 2483491 17393.66 512 506 142.8
C 12 254 967129 6771.33 512 506 142.8
D 2 153 780967 4004.54 676 647 194.9
D 2 16 220800 1129.81 676 647 194.9
D 2 120 212022 1084.76 676 647 194.9

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