ASTROSAT CZTI

Data Quality Report

Orbit 05172

Creation date: 2024-06-27T14:52:16.973379
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/AS1G05_214T01_9000000652_05172cztM0_level2.evt modeM0/AS1G05_214T01_9000000652_05172cztM0_level2_quad_clean.evt
Size (bytes)507,000,96079,148,160
Size483.5 MB 75.5 MB
Events in quadrant A4,371,029475,958
Events in quadrant B3,344,130486,992
Events in quadrant C3,216,628492,620
Events in quadrant D3,953,768460,032

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178933
B0144982
C0143554
D0165585

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69033404.925395%
B69031962.839345%
C69021161.680672%
D69023024.375543%

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 7018 6905 99 99 1.41% 1.43%
B 7018 6905 4 4 0.06% 0.06%
C 7018 6905 0 0 0.00% 0.00%
D 7018 6905 152 152 2.17% 2.20%

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 0 247 842152 4923.07 816 797 170.9
A 0 50 206918 1206.09 816 797 170.9
A 0 226 83827 485.84 816 797 170.9
B 15 54 21266 126.65 834 816 161.5
B 0 219 19792 117.52 834 816 161.5
B 4 48 17394 102.67 834 816 161.5
C 1 16 30980 158.6 807 812 190.2
C 8 128 13839 68.48 807 812 190.2
C 12 4 9118 43.67 807 812 190.2
D 2 33 671769 3357.23 804 777 199.9
D 8 195 70495 348.83 804 777 199.9
D 2 221 43829 215.41 804 777 199.9

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