ASTROSAT CZTI

Data Quality Report

Orbit 54692

Creation date: 2025-11-11T14:48:24.632798
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_54692cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54692cztM0_level2_quad_clean.evt
Size (bytes)541,140,48090,201,600
Size516.1 MB 86.0 MB
Events in quadrant A4,259,061610,403
Events in quadrant B3,283,414655,747
Events in quadrant C3,176,292590,130
Events in quadrant D8,824,647436,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168721
B0142531
C0140401
D0306281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62822033.231455%
B62831322.100907%
C6283811.289193%
D6283172227.407290%

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 7372 6283 111 111 1.51% 1.77%
B 7373 6284 59 59 0.80% 0.94%
C 7373 6284 60 60 0.81% 0.95%
D 7373 6284 1774 1774 24.06% 28.23%

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 7 190 1108323 6517.29 682 666 170.0
A 3 14 162429 951.79 682 666 170.0
A 11 3 156710 918.14 682 666 170.0
B 2 249 199638 1355.81 682 657 146.8
B 7 0 199280 1353.37 682 657 146.8
B 10 247 69118 466.48 682 657 146.8
C 4 5 149596 801.14 672 666 185.9
C 6 223 85056 453.96 672 666 185.9
C 1 16 79505 424.1 672 666 185.9
D 11 129 4464638 25560.35 602 575 174.6
D 2 172 792360 4533.61 602 575 174.6
D 11 176 428619 2450.9 602 575 174.6

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