ASTROSAT CZTI

Data Quality Report

Orbit 46895

Creation date: 2024-06-27T23:29:13.352280
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/AS1A13_068T13_9000006278_46895cztM0_level2.fits modeM0/AS1A13_068T13_9000006278_46895cztM0_level2_quad_clean.evt
Size (bytes)602,565,12086,457,600
Size574.7 MB 82.5 MB
Events in quadrant A5,907,517644,338
Events in quadrant B9,921,830332,217
Events in quadrant C2,582,482654,356
Events in quadrant D3,450,882588,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214731
B0333781
C0117191
D0143191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56972754.827102%
B5697316355.520449%
C5698681.193401%
D56982324.071604%

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 6907 5697 78 78 1.13% 1.37%
B 6906 5697 2787 2787 40.36% 48.92%
C 6908 5699 6 6 0.09% 0.11%
D 6908 5699 125 125 1.81% 2.19%

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 3192575 23974.92 644 632 133.1
A 13 248 152127 1137.89 644 632 133.1
A 7 3 17854 129.36 644 632 133.1
B 3 112 7704351 80546.83 491 476 95.6
B 15 36 126493 1317.55 491 476 95.6
B 0 198 48641 503.58 491 476 95.6
C 14 254 25702 165.85 648 652 151.0
C 12 2 17671 112.68 648 652 151.0
C 3 233 6752 40.39 648 652 151.0
D 13 249 463027 2921.8 640 621 158.3
D 1 52 179564 1130.69 640 621 158.3
D 2 249 155928 981.34 640 621 158.3

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