ASTROSAT CZTI

Data Quality Report

Orbit 41124

Creation date: 2024-06-27T22:24:45.675131
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/AS1A12_052T04_9000005602_41124cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41124cztM0_level2_quad_clean.evt
Size (bytes)441,348,480110,856,960
Size420.9 MB 105.7 MB
Events in quadrant A3,546,215753,161
Events in quadrant B4,417,155729,427
Events in quadrant C3,325,643742,247
Events in quadrant D4,509,546649,155

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145552
B0179911
C0141311
D0183591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6929120.173185%
B69294666.725357%
C6929160.230914%
D69294586.609900%

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 8481 6930 2 2 0.02% 0.03%
B 8481 6930 308 308 3.63% 4.44%
C 8481 6930 12 12 0.14% 0.17%
D 8481 6930 368 368 4.34% 5.31%

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 10 83 519744 3282.49 773 755 158.1
A 2 79 24661 151.2 773 755 158.1
A 13 254 12329 73.2 773 755 158.1
B 0 245 1380163 9524.43 740 717 144.8
B 0 190 113687 780.0 740 717 144.8
B 12 111 18431 122.31 740 717 144.8
C 15 214 291722 1655.87 750 753 175.7
C 14 254 51105 286.55 750 753 175.7
C 0 10 50352 282.26 750 753 175.7
D 2 249 1113962 6160.69 740 718 180.7
D 13 249 413975 2286.96 740 718 180.7
D 2 16 76659 420.26 740 718 180.7

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