ASTROSAT CZTI

Data Quality Report

Orbit 27545

Creation date: 2024-06-27T19:41:20.701912
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/AS1A09_038T29_9000003954_27545cztM0_level2.evt modeM0/AS1A09_038T29_9000003954_27545cztM0_level2_quad_clean.evt
Size (bytes)525,666,240126,616,320
Size501.3 MB 120.8 MB
Events in quadrant A3,334,545861,267
Events in quadrant B4,511,342850,610
Events in quadrant C3,500,893860,636
Events in quadrant D4,139,328816,075

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136750
B0174280
C0141700
D0164360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6399190.296921%
B63984627.221007%
C6398661.031572%
D63981061.656768%

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 7754 6400 0 0 0.00% 0.00%
B 7752 6397 375 375 4.84% 5.86%
C 7753 6398 0 0 0.00% 0.00%
D 7753 6399 88 88 1.14% 1.38%

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 13 254 10073 54.31 865 849 169.8
A 0 226 7266 37.79 865 849 169.8
A 3 137 7226 37.55 865 849 169.8
B 10 245 1131120 7336.73 845 827 154.1
B 4 52 27700 174.43 845 827 154.1
B 0 230 23062 144.33 845 827 154.1
C 14 238 143048 717.14 861 867 198.3
C 13 61 6059 26.19 861 867 198.3
C 2 16 3478 13.17 861 867 198.3
D 1 52 880330 4472.59 846 827 196.6
D 2 250 31029 153.59 846 827 196.6
D 2 234 22108 108.22 846 827 196.6

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