ASTROSAT CZTI

Data Quality Report

Orbit 52884

Creation date: 2025-07-16T12:31:31.137428
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_9000006482_52884cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52884cztM0_level2_quad_clean.evt
Size (bytes)648,596,16085,285,440
Size618.5 MB 81.3 MB
Events in quadrant A9,934,868435,821
Events in quadrant B5,341,108612,748
Events in quadrant C3,505,161569,278
Events in quadrant D4,731,568516,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340043
B0203551
C0150311
D0185931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6411199731.149587%
B64123595.598877%
C6412761.185278%
D64124206.550218%

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 7185 6410 1902 1902 26.47% 29.67%
B 7187 6412 220 220 3.06% 3.43%
C 7187 6413 60 60 0.83% 0.94%
D 7187 6413 408 408 5.68% 6.36%

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 9 191 6281374 41909.08 599 587 149.9
A 12 17 414786 2763.78 599 587 149.9
A 7 206 141902 942.94 599 587 149.9
B 8 3 2178167 15531.51 651 627 140.2
B 4 81 166089 1180.17 651 627 140.2
B 5 185 65629 463.63 651 627 140.2
C 13 3 209683 1165.1 642 635 179.4
C 7 80 208176 1156.71 642 635 179.4
C 4 5 82757 457.7 642 635 179.4
D 12 17 671124 3689.1 626 595 181.8
D 3 224 464588 2552.78 626 595 181.8
D 8 176 271497 1490.44 626 595 181.8

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