ASTROSAT CZTI

Data Quality Report

Orbit 53687

Creation date: 2025-08-31T12:52:02.909950
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_022T05_9000006504_53687cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53687cztM0_level2_quad_clean.evt
Size (bytes)814,677,12073,969,920
Size776.9 MB 70.5 MB
Events in quadrant A14,094,247146,100
Events in quadrant B3,250,624659,319
Events in quadrant C8,177,953470,873
Events in quadrant D4,157,645534,328

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0461291
B0139191
C0285913
D0168011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6146494380.426294%
B61461302.115197%
C6145162026.362897%
D61452514.084622%

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 7295 6145 4736 4736 64.92% 77.07%
B 7296 6146 37 37 0.51% 0.60%
C 7295 6146 1473 1473 20.19% 23.97%
D 7295 6145 200 200 2.74% 3.25%

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 63 9305287 86866.4 431 421 107.1
A 3 78 2211420 20640.98 431 421 107.1
A 12 17 590873 5512.22 431 421 107.1
B 5 185 332857 2259.67 680 657 147.0
B 7 0 83792 565.49 680 657 147.0
B 10 254 53638 360.38 680 657 147.0
C 15 224 4591990 27955.54 591 587 164.2
C 2 12 436552 2654.45 591 587 164.2
C 15 158 232966 1414.88 591 587 164.2
D 10 172 805146 4330.68 651 622 185.8
D 13 153 461997 2483.54 651 622 185.8
D 2 153 76821 410.17 651 622 185.8

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