ASTROSAT CZTI

Data Quality Report

Orbit 50710

Creation date: 2025-02-12T00:32:08.512480
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_003T01_9000006448_50710cztM0_level2.fits modeM0/AS1C09_003T01_9000006448_50710cztM0_level2_quad_clean.evt
Size (bytes)535,901,76089,510,400
Size511.1 MB 85.4 MB
Events in quadrant A3,448,346598,334
Events in quadrant B3,507,098658,787
Events in quadrant C6,374,038523,034
Events in quadrant D6,030,484500,320

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142211
B0146451
C0231671
D0222041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61521171.901821%
B61521201.950585%
C615291814.921977%
D615272711.817295%

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 7322 6153 57 57 0.78% 0.93%
B 7322 6153 53 53 0.72% 0.86%
C 7322 6153 767 767 10.48% 12.47%
D 7322 6153 608 608 8.30% 9.88%

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 3 200147 1225.88 656 641 162.7
A 4 249 126147 771.18 656 641 162.7
A 8 38 122749 750.3 656 641 162.7
B 0 229 180851 1303.19 658 634 138.3
B 6 51 159152 1146.28 658 634 138.3
B 8 128 91173 654.71 658 634 138.3
C 5 10 1974506 11725.82 614 612 168.3
C 4 5 548005 3251.76 614 612 168.3
C 15 1 441793 2620.82 614 612 168.3
D 8 176 2005184 11722.29 614 592 171.0
D 6 63 386242 2255.17 614 592 171.0
D 2 249 295126 1722.35 614 592 171.0

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