ASTROSAT CZTI

Data Quality Report

Orbit 51950

Creation date: 2025-05-06T14:10:37.292384
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_9000006468_51950cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51950cztM0_level2_quad_clean.evt
Size (bytes)878,356,80083,194,560
Size837.7 MB 79.3 MB
Events in quadrant A7,604,810542,666
Events in quadrant B3,601,082678,297
Events in quadrant C10,855,132396,471
Events in quadrant D9,914,137415,499

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274170
B0156850
C0371461
D0342600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6965123217.688442%
B69661151.650876%
C6965285540.990668%
D6965222231.902369%

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 6965 6965 1077 1077 15.46% 15.46%
B 6966 6966 73 73 1.05% 1.05%
C 6965 6965 2374 2374 34.08% 34.08%
D 6965 6965 2015 2015 28.93% 28.93%

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 7 64 2637256 16249.97 656 642 162.3
A 4 159 706761 4351.95 656 642 162.3
A 15 239 515039 3170.33 656 642 162.3
B 4 201 91908 607.34 700 675 150.2
B 0 216 64992 428.16 700 675 150.2
B 10 44 63204 416.26 700 675 150.2
C 15 224 6512582 42768.39 548 542 152.3
C 13 3 789734 5183.09 548 542 152.3
C 15 147 643181 4220.59 548 542 152.3
D 12 16 5225109 31824.99 573 546 164.2
D 12 17 812317 4944.84 573 546 164.2
D 15 58 351761 2139.4 573 546 164.2

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