ASTROSAT CZTI

Data Quality Report

Orbit 54686

Creation date: 2025-11-14T11:51:07.717332
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_066T07_9000006522_54686cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54686cztM0_level2_quad_clean.evt
Size (bytes)651,179,52082,486,080
Size621.0 MB 78.7 MB
Events in quadrant A3,546,794596,074
Events in quadrant B3,652,769631,772
Events in quadrant C4,750,016549,675
Events in quadrant D11,655,115271,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151411
B0153871
C0187191
D0390831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64332453.808487%
B64343004.662729%
C64344046.279142%
D6434351154.569475%

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 7288 6433 161 161 2.21% 2.50%
B 7289 6434 204 204 2.80% 3.17%
C 7289 6434 297 297 4.07% 4.62%
D 7289 6434 3261 3261 44.74% 50.68%

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 0 8 550944 3219.86 695 678 170.9
A 5 240 75973 440.59 695 678 170.9
A 11 3 63430 367.19 695 678 170.9
B 1 207 514013 3487.39 679 655 147.2
B 2 249 270210 1831.17 679 655 147.2
B 0 213 107914 728.64 679 655 147.2
C 4 5 1451572 7974.65 660 653 181.9
C 13 3 502879 2760.37 660 653 181.9
C 14 254 60685 329.95 660 653 181.9
D 11 129 7053287 50535.03 481 458 139.6
D 11 176 1596504 11436.01 481 458 139.6
D 2 62 490906 3514.17 481 458 139.6

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