ASTROSAT CZTI

Data Quality Report

Orbit 53386

Creation date: 2025-08-11T06:12:43.000145
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/AS1C09_011T09_9000006494_53386cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53386cztM0_level2_quad_clean.evt
Size (bytes)699,459,84094,798,080
Size667.1 MB 90.4 MB
Events in quadrant A3,807,395686,824
Events in quadrant B5,881,951650,935
Events in quadrant C10,250,750462,618
Events in quadrant D5,406,213579,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163242
B0225363
C0353242
D0212312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7037881.250533%
B703695013.501990%
C7036232132.987493%
D70365968.470722%

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 7672 7038 43 43 0.56% 0.61%
B 7671 7037 535 535 6.97% 7.60%
C 7671 7036 2006 2006 26.15% 28.51%
D 7671 7037 445 445 5.80% 6.32%

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 8 249 198051 1066.45 740 722 185.0
A 15 174 148521 798.77 740 722 185.0
A 0 8 143114 769.55 740 722 185.0
B 4 206 1823718 12292.64 705 682 148.3
B 4 171 615186 4143.57 705 682 148.3
B 8 234 203221 1365.71 705 682 148.3
C 15 178 4035036 23710.06 612 602 170.2
C 15 224 2624201 15418.69 612 602 170.2
C 1 241 652770 3832.74 612 602 170.2
D 3 12 1377248 6859.25 697 666 200.7
D 2 249 375837 1869.41 697 666 200.7
D 2 153 312528 1553.95 697 666 200.7

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