ASTROSAT CZTI

Data Quality Report

Orbit 58449

Creation date: 2026-07-17T23:16:41.995084
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_045T01_9000006590_58449cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58449cztM0_level2_quad_clean.evt
Size (bytes)386,504,64093,767,040
Size368.6 MB 89.4 MB
Events in quadrant A2,883,454615,054
Events in quadrant B3,431,999643,459
Events in quadrant C2,894,749591,838
Events in quadrant D4,589,673534,458

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135281
B0147941
C0134912
D0181431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6514510.782929%
B65141802.763279%
C6514270.414492%
D65143805.833589%

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 7304 6514 8 8 0.11% 0.12%
B 7304 6514 103 103 1.41% 1.58%
C 7304 6515 10 10 0.14% 0.15%
D 7304 6515 346 346 4.74% 5.31%

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 3 14 57984 326.74 702 684 175.4
A 8 230 27291 151.72 702 684 175.4
A 12 80 21811 120.47 702 684 175.4
B 4 171 198505 1329.86 690 664 148.8
B 5 172 74299 494.96 690 664 148.8
B 0 186 56875 377.84 690 664 148.8
C 14 245 67712 356.44 684 680 188.1
C 6 13 33232 173.09 684 680 188.1
C 4 5 33211 172.98 684 680 188.1
D 8 240 1590545 8340.93 665 634 190.6
D 2 249 101495 529.13 665 634 190.6
D 2 31 58104 301.5 665 634 190.6

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