ASTROSAT CZTI

Data Quality Report

Orbit 42523

Creation date: 2024-06-27T22:41:11.802531
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/AS1A07_041T01_9000005808_42523cztM0_level2.fits modeM0/AS1A07_041T01_9000005808_42523cztM0_level2_quad_clean.evt
Size (bytes)358,387,200104,549,760
Size341.8 MB 99.7 MB
Events in quadrant A3,338,889694,818
Events in quadrant B2,940,862709,921
Events in quadrant C3,535,115681,918
Events in quadrant D2,947,452627,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138842
B0133242
C0146312
D0138442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6471170.262711%
B6471240.370885%
C6472490.757108%
D6472741.143387%

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 9217 6473 3 3 0.03% 0.05%
B 9217 6473 9 9 0.10% 0.14%
C 9218 6474 44 44 0.48% 0.68%
D 9218 6474 56 56 0.61% 0.86%

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 617356 4283.61 694 679 144.0
A 13 248 11903 77.97 694 679 144.0
A 2 79 11083 72.27 694 679 144.0
B 0 245 118498 866.74 690 669 135.9
B 5 255 73511 535.82 690 669 135.9
B 5 172 38755 280.16 690 669 135.9
C 9 54 597925 3734.21 679 683 159.9
C 15 214 288174 1797.52 679 683 159.9
C 13 61 4432 23.44 679 683 159.9
D 12 6 272064 1622.59 676 656 167.3
D 9 19 37599 220.86 676 656 167.3
D 2 234 28130 164.25 676 656 167.3

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