ASTROSAT CZTI

Data Quality Report

Orbit 52601

Creation date: 2025-06-19T11:10:28.738577
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_9000006478_52601cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52601cztM0_level2_quad_clean.evt
Size (bytes)900,734,40078,848,640
Size859.0 MB 75.2 MB
Events in quadrant A3,489,405609,922
Events in quadrant B6,148,570640,489
Events in quadrant C9,472,328438,008
Events in quadrant D13,721,344237,358

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154571
B0227781
C0327121
D0453501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66081762.663438%
B66094326.536541%
C6609195729.611136%
D6609417363.141171%

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 7493 6609 128 128 1.71% 1.94%
B 7494 6610 435 435 5.80% 6.58%
C 7494 6610 2064 2064 27.54% 31.23%
D 7494 6610 3983 3983 53.15% 60.26%

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 328149 1984.6 660 645 165.0
A 3 28 126205 760.87 660 645 165.0
A 7 190 89788 540.19 660 645 165.0
B 10 254 2265416 16310.55 656 635 138.9
B 4 81 293284 2107.61 656 635 138.9
B 10 128 247698 1779.3 656 635 138.9
C 15 248 6281240 38629.08 569 561 162.6
C 1 44 482346 2963.2 569 561 162.6
C 12 252 137672 843.3 569 561 162.6
D 12 16 7157459 57454.42 428 406 124.6
D 8 176 2044398 16408.48 428 406 124.6
D 11 245 594440 4768.71 428 406 124.6

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