ASTROSAT CZTI

Data Quality Report

Orbit 41798

Creation date: 2024-06-27T22:32:56.889631
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/AS1A12_052T04_9000005700_41798cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41798cztM0_level2_quad_clean.evt
Size (bytes)359,383,68092,361,600
Size342.7 MB 88.1 MB
Events in quadrant A3,102,135629,641
Events in quadrant B2,576,187636,242
Events in quadrant C3,403,546586,420
Events in quadrant D3,775,563544,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127702
B0117822
C0137572
D0152712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5723150.262100%
B5723170.297047%
C57232494.350865%
D57233025.276953%

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 7095 5724 9 9 0.13% 0.16%
B 7094 5722 8 8 0.11% 0.14%
C 7094 5722 240 240 3.38% 4.19%
D 7094 5722 305 305 4.30% 5.33%

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 10 83 573611 4440.78 621 607 129.0
A 12 189 74471 572.45 621 607 129.0
A 15 223 40978 312.88 621 607 129.0
B 5 255 30925 254.42 615 599 119.2
B 0 186 26144 214.31 615 599 119.2
B 0 245 22269 181.8 615 599 119.2
C 0 10 886656 6436.46 586 590 137.7
C 15 214 223674 1620.5 586 590 137.7
C 12 249 4749 30.21 586 590 137.7
D 12 6 548787 3741.95 592 573 146.5
D 13 249 410816 2800.2 592 573 146.5
D 15 217 273807 1865.02 592 573 146.5

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