ASTROSAT CZTI

Data Quality Report

Orbit 34731

Creation date: 2022-03-03T10:22:17.522776
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/AS1C07_001T01_9000004982_34731cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34731cztM0_level2_quad_clean.evt
Size (bytes)544,222,08089,801,280
Size519.0 MB 85.6 MB
Events in quadrant A3,284,824589,062
Events in quadrant B3,320,850587,928
Events in quadrant C2,945,872586,834
Events in quadrant D6,529,514541,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134693
B0137572
C0122532
D0235792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5922130.219520%
B59221742.938197%
C5922290.489699%
D59224477.548126%

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 7265 5923 1 1 0.01% 0.02%
B 7265 5923 109 109 1.50% 1.84%
C 7265 5923 17 17 0.23% 0.29%
D 7265 5923 359 359 4.94% 6.06%

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 15 169 544115 4009.27 676 664 135.5
A 10 83 51307 373.61 676 664 135.5
A 7 48 27260 196.21 676 664 135.5
B 5 172 557244 4329.5 665 647 128.6
B 15 32 24620 186.47 665 647 128.6
B 15 85 19999 150.53 665 647 128.6
C 15 214 253390 1659.09 656 660 152.3
C 0 10 97658 636.76 656 660 152.3
C 14 67 16000 100.7 656 660 152.3
D 1 20 1250094 7391.7 639 625 169.0
D 8 195 1200385 7097.63 639 625 169.0
D 2 249 441320 2607.1 639 625 169.0

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