ASTROSAT CZTI

Data Quality Report

Orbit 25260

Creation date: 2024-06-27T19:15:38.108199
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_027T01_9000003694_25260cztM0_level2.evt modeM0/AS1A09_027T01_9000003694_25260cztM0_level2_quad_clean.evt
Size (bytes)658,036,800103,343,040
Size627.6 MB 98.6 MB
Events in quadrant A3,412,413713,615
Events in quadrant B3,868,174709,912
Events in quadrant C5,224,079630,861
Events in quadrant D7,005,019641,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141310
B0155350
C0196550
D0252360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6205360.580177%
B62052313.722804%
C620574812.054795%
D620482713.330110%

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 7385 6206 2 2 0.03% 0.03%
B 7385 6206 98 98 1.33% 1.58%
C 7385 6205 524 524 7.10% 8.44%
D 7384 6205 600 600 8.13% 9.67%

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 6 16 399030 2589.59 774 759 153.8
A 13 254 10555 63.69 774 759 153.8
A 3 1 10512 63.41 774 759 153.8
B 3 64 626056 4457.74 761 743 140.3
B 15 33 122477 867.82 761 743 140.3
B 0 229 39529 276.5 761 743 140.3
C 0 239 2201110 13724.47 698 706 160.3
C 3 233 157247 976.39 698 706 160.3
C 14 238 110874 687.15 698 706 160.3
D 8 195 1345521 7530.74 740 719 178.6
D 9 35 1097035 6139.25 740 719 178.6
D 1 239 851001 4761.48 740 719 178.6

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