ASTROSAT CZTI

Data Quality Report

Orbit 53284

Creation date: 2025-08-04T09:08:34.871880
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_011T08_9000006492_53284cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53284cztM0_level2_quad_clean.evt
Size (bytes)746,069,76090,627,840
Size711.5 MB 86.4 MB
Events in quadrant A4,678,399628,855
Events in quadrant B4,578,144689,769
Events in quadrant C13,331,997354,385
Events in quadrant D4,490,086586,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190001
B0187591
C0444015
D0182591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69523595.163982%
B69523074.415995%
C6951343349.388577%
D69512243.222558%

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 7787 6953 356 356 4.57% 5.12%
B 7787 6953 212 212 2.72% 3.05%
C 7786 6952 3554 3554 45.65% 51.12%
D 7786 6952 221 221 2.84% 3.18%

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 12 115 1259493 7262.81 693 675 173.3
A 7 206 182618 1049.73 693 675 173.3
A 3 62 134830 774.01 693 675 173.3
B 2 249 472803 3245.78 695 672 145.5
B 4 81 340100 2333.48 695 672 145.5
B 14 167 214608 1470.76 695 672 145.5
C 1 241 5865977 39629.83 534 529 148.0
C 10 22 1573938 10630.72 534 529 148.0
C 15 224 877723 5926.75 534 529 148.0
D 3 12 616443 3153.26 674 643 195.3
D 6 239 463149 2368.31 674 643 195.3
D 11 176 224971 1148.69 674 643 195.3

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