ASTROSAT CZTI

Data Quality Report

Orbit 26819

Creation date: 2024-06-27T19:33:18.865308
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_079T01_9000003864_26819cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26819cztM0_level2_quad_clean.evt
Size (bytes)731,612,160112,147,200
Size697.7 MB 107.0 MB
Events in quadrant A3,913,398788,520
Events in quadrant B8,744,662640,782
Events in quadrant C3,300,174798,166
Events in quadrant D5,768,112723,331

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159350
B0302610
C0137710
D0215170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6370390.612245%
B6369217734.181190%
C6369951.491600%
D636988313.864029%

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 7550 6371 3 3 0.04% 0.05%
B 7549 6370 1986 1986 26.31% 31.18%
C 7549 6370 13 13 0.17% 0.20%
D 7549 6369 515 515 6.82% 8.09%

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 0 13 833925 5236.94 798 781 159.1
A 13 254 9825 56.85 798 781 159.1
A 3 137 7242 40.61 798 781 159.1
B 0 189 6128926 50522.19 644 626 121.3
B 10 246 29428 237.45 644 626 121.3
B 10 251 21073 168.57 644 626 121.3
C 14 238 127859 693.59 789 794 183.2
C 15 208 48099 258.21 789 794 183.2
C 2 16 47552 255.23 789 794 183.2
D 1 52 2530045 14666.42 730 716 172.5
D 7 80 220069 1271.93 730 716 172.5
D 2 250 204902 1183.98 730 716 172.5

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