ASTROSAT CZTI

Data Quality Report

Orbit 55608

Creation date: 2026-01-08T10:57:54.063559
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_021T06_9000006538_55608cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55608cztM0_level2_quad_clean.evt
Size (bytes)393,088,32094,553,280
Size374.9 MB 90.2 MB
Events in quadrant A3,941,907617,161
Events in quadrant B2,863,365662,942
Events in quadrant C3,029,499583,156
Events in quadrant D4,203,032540,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162221
B0136811
C0143391
D0171785

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6592891.350121%
B6593711.076900%
C6593661.001062%
D65922283.458738%

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 7492 6593 18 18 0.24% 0.27%
B 7493 6594 26 26 0.35% 0.39%
C 7493 6594 49 49 0.65% 0.74%
D 7492 6593 171 171 2.28% 2.59%

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 875971 5258.38 677 660 166.5
A 8 249 176810 1058.21 677 660 166.5
A 3 14 112393 671.23 677 660 166.5
B 4 67 35470 245.84 664 638 141.7
B 7 252 29451 203.36 664 638 141.7
B 0 143 27821 191.86 664 638 141.7
C 13 3 197640 1105.48 648 639 178.2
C 10 19 114100 636.69 648 639 178.2
C 12 250 50988 282.53 648 639 178.2
D 11 129 586789 3225.28 647 618 181.7
D 2 62 529343 2909.19 647 618 181.7
D 2 249 106078 580.27 647 618 181.7

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