ASTROSAT CZTI

Data Quality Report

Orbit 40842

Creation date: 2024-06-27T22:21:13.001281
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_104T02_9000005572_40842cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40842cztM0_level2_quad_clean.evt
Size (bytes)443,090,88098,942,400
Size422.6 MB 94.4 MB
Events in quadrant A3,446,326673,074
Events in quadrant B2,839,254696,094
Events in quadrant C3,161,800657,870
Events in quadrant D6,466,914530,689

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138543
B0127932
C0133152
D0236332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269480.765672%
B6269180.287127%
C6269570.909236%
D626994315.042271%

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 9133 6271 30 30 0.33% 0.48%
B 9133 6271 6 6 0.07% 0.10%
C 9133 6271 40 40 0.44% 0.64%
D 9133 6271 855 855 9.36% 13.63%

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 566280 3975.63 689 673 142.3
A 13 248 124942 873.48 689 673 142.3
A 7 3 30333 208.48 689 673 142.3
B 0 190 60706 446.1 688 669 134.6
B 5 255 44750 327.54 688 669 134.6
B 0 230 28978 210.35 688 669 134.6
C 15 214 266751 1687.8 671 675 157.6
C 14 254 226691 1433.69 671 675 157.6
C 0 10 35005 217.77 671 675 157.6
D 12 79 2658719 16958.98 635 616 156.7
D 13 249 993254 6333.14 635 616 156.7
D 2 249 247403 1574.53 635 616 156.7

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