ASTROSAT CZTI

Data Quality Report

Orbit 54555

Creation date: 2025-10-28T23:36:51.620120
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_127T09_9000006520_54555cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54555cztM0_level2_quad_clean.evt
Size (bytes)580,132,80095,996,160
Size553.3 MB 91.5 MB
Events in quadrant A7,440,513601,460
Events in quadrant B4,357,699663,506
Events in quadrant C4,700,813583,332
Events in quadrant D4,439,872576,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269842
B0178902
C0187233
D0180442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6905100714.583635%
B69055087.356988%
C69055487.936278%
D69052723.939175%

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 7774 6904 854 854 10.99% 12.37%
B 7774 6904 281 281 3.61% 4.07%
C 7774 6905 342 342 4.40% 4.95%
D 7774 6904 206 206 2.65% 2.98%

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 3721154 20248.3 740 720 183.7
A 11 3 432678 2350.91 740 720 183.7
A 4 249 334518 1816.68 740 720 183.7
B 5 185 389819 2456.58 739 712 158.4
B 8 234 382294 2409.07 739 712 158.4
B 2 249 254074 1599.57 739 712 158.4
C 12 254 986660 4986.81 725 718 197.7
C 1 45 312773 1578.35 725 718 197.7
C 13 3 186825 941.31 725 718 197.7
D 1 3 1280885 6056.4 748 715 211.4
D 5 173 62904 294.21 748 715 211.4
D 2 233 32231 149.1 748 715 211.4

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