ASTROSAT CZTI

Data Quality Report

Orbit 38610

Creation date: 2024-06-27T21:54:05.617028
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_9000005388_38610cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38610cztM0_level2_quad_clean.evt
Size (bytes)478,618,56094,161,600
Size456.4 MB 89.8 MB
Events in quadrant A3,029,269666,627
Events in quadrant B3,212,330672,207
Events in quadrant C2,780,092646,886
Events in quadrant D8,253,451467,582

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123673
B0131882
C0117982
D0284452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5687170.298927%
B5687871.529805%
C5687220.386847%
D5688148326.072433%

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 7390 5687 7 7 0.09% 0.12%
B 7390 5687 56 56 0.76% 0.98%
C 7390 5687 17 17 0.23% 0.30%
D 7392 5689 1706 1706 23.08% 29.99%

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 464579 3566.66 642 632 130.1
A 13 248 49320 374.3 642 632 130.1
A 13 6 18771 139.45 642 632 130.1
B 0 183 409709 3349.4 637 621 122.1
B 5 184 100508 817.82 637 621 122.1
B 5 172 73886 599.86 637 621 122.1
C 15 214 235181 1653.37 617 620 141.9
C 14 254 40808 283.28 617 620 141.9
C 0 10 34285 237.3 617 620 141.9
D 12 227 4300619 30686.95 573 556 140.1
D 12 235 674950 4812.74 573 556 140.1
D 13 249 368260 2624.08 573 556 140.1

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