ASTROSAT CZTI

Data Quality Report

Orbit 53211

Creation date: 2025-07-30T11:15:03.105723
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_011T06_9000006490_53211cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53211cztM0_level2_quad_clean.evt
Size (bytes)791,542,08073,992,960
Size754.9 MB 70.6 MB
Events in quadrant A3,321,600576,890
Events in quadrant B4,799,969591,086
Events in quadrant C9,594,738288,319
Events in quadrant D11,100,270348,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146971
B0187841
C0328601
D0373351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62461642.625680%
B62465699.109830%
C6247315150.440211%
D6247246739.490956%

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 7171 6247 131 131 1.83% 2.10%
B 7171 6247 447 447 6.23% 7.16%
C 7172 6246 2240 2240 31.23% 35.86%
D 7172 6248 2714 2714 37.84% 43.44%

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 4 249 270555 1748.23 622 605 154.4
A 15 174 190829 1231.91 622 605 154.4
A 3 62 93447 601.26 622 605 154.4
B 2 249 1833976 14180.29 607 586 129.3
B 10 247 158111 1218.37 607 586 129.3
B 0 197 88832 682.54 607 586 129.3
C 15 198 5560566 56670.86 350 346 98.1
C 15 224 975742 9941.43 350 346 98.1
C 4 5 933199 9507.82 350 346 98.1
D 15 125 7657003 51570.49 509 484 148.5
D 3 12 477380 3212.13 509 484 148.5
D 12 3 222305 1494.08 509 484 148.5

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