ASTROSAT CZTI

Data Quality Report

Orbit 54446

Creation date: 2025-10-21T14:57:35.660089
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_126T19_9000006518_54446cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54446cztM0_level2_quad_clean.evt
Size (bytes)582,802,56082,892,160
Size555.8 MB 79.1 MB
Events in quadrant A2,858,144591,255
Events in quadrant B3,580,886622,621
Events in quadrant C3,257,101570,763
Events in quadrant D11,377,539277,181

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135921
B0156101
C0146731
D0381921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64211622.522971%
B64213144.890204%
C64211281.993459%
D6422335852.289007%

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 7101 6422 21 21 0.30% 0.33%
B 7101 6422 136 136 1.92% 2.12%
C 7101 6422 72 72 1.01% 1.12%
D 7102 6423 2930 2930 41.26% 45.62%

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 159776 942.54 681 663 168.8
A 4 3 25108 144.81 681 663 168.8
A 13 254 14001 79.01 681 663 168.8
B 2 249 447982 3134.32 664 641 142.7
B 5 185 292826 2047.21 664 641 142.7
B 0 213 88140 613.07 664 641 142.7
C 13 3 435741 2403.69 656 647 181.0
C 14 254 113240 622.02 656 647 181.0
C 9 237 53385 291.35 656 647 181.0
D 7 70 3615915 26676.19 479 457 135.5
D 2 172 2536599 18712.59 479 457 135.5
D 8 176 1863023 13742.7 479 457 135.5

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