ASTROSAT CZTI

Data Quality Report

Orbit 40055

Creation date: 2024-06-27T22:11:46.387310
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_054T03_9000005516_40055cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40055cztM0_level2_quad_clean.evt
Size (bytes)345,513,60096,572,160
Size329.5 MB 92.1 MB
Events in quadrant A2,899,765654,636
Events in quadrant B2,742,824679,365
Events in quadrant C3,495,225645,088
Events in quadrant D3,237,837573,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118323
B0117032
C0138782
D0134782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5321180.338282%
B5321741.390716%
C5321460.864499%
D53211733.251269%

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 7443 5322 11 11 0.15% 0.21%
B 7443 5322 40 40 0.54% 0.75%
C 7443 5322 46 46 0.62% 0.86%
D 7443 5322 179 179 2.40% 3.36%

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 452877 3726.99 602 592 121.4
A 9 143 84758 693.56 602 592 121.4
A 2 79 16288 129.34 602 592 121.4
B 4 171 242377 2101.96 606 592 115.0
B 0 221 82996 716.38 606 592 115.0
B 0 245 34791 297.31 606 592 115.0
C 9 187 930393 6819.94 589 595 136.3
C 15 214 219838 1608.12 589 595 136.3
C 0 10 24609 176.14 589 595 136.3
D 12 227 501622 3582.3 575 558 139.9
D 1 47 195738 1395.42 575 558 139.9
D 2 250 151645 1080.18 575 558 139.9

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