ASTROSAT CZTI

Data Quality Report

Orbit 24763

Creation date: 2024-06-27T19:09:36.130285
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_147T01_9000003624_24763cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24763cztM0_level2_quad_clean.evt
Size (bytes)515,016,00092,076,480
Size491.2 MB 87.8 MB
Events in quadrant A3,437,927592,934
Events in quadrant B3,979,723593,368
Events in quadrant C4,066,323562,290
Events in quadrant D3,639,927553,575

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144342
B0161492
C0165692
D0153962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6982390.558579%
B69831852.649291%
C6983971.389088%
D6983701.002434%

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 8992 6984 0 0 0.00% 0.00%
B 8993 6985 62 62 0.69% 0.89%
C 8993 6985 2 2 0.02% 0.03%
D 8993 6985 47 47 0.52% 0.67%

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 9692 49.35 891 872 178.7
A 3 137 8053 40.18 891 872 178.7
A 0 226 7681 38.1 891 872 178.7
B 3 64 433626 2573.84 878 857 168.1
B 0 189 63164 370.56 878 857 168.1
B 4 52 24415 140.11 878 857 168.1
C 7 247 521968 2628.37 845 853 198.3
C 14 238 135628 679.77 845 853 198.3
C 10 91 94756 473.62 845 853 198.3
D 7 238 165008 800.39 851 827 205.1
D 8 195 159914 775.56 851 827 205.1
D 12 233 43739 209.2 851 827 205.1

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