ASTROSAT CZTI

Data Quality Report

Orbit 42138

Creation date: 2024-06-27T22:37:24.237150
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_001T11_9000005760_42138cztM0_level2.fits modeM0/AS1C07_001T11_9000005760_42138cztM0_level2_quad_clean.evt
Size (bytes)369,774,72086,155,200
Size352.6 MB 82.2 MB
Events in quadrant A2,920,903592,902
Events in quadrant B2,710,063592,563
Events in quadrant C2,475,615585,115
Events in quadrant D5,171,649469,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120622
B0116902
C0107562
D0191302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5260220.418251%
B52591011.920517%
C525940.076060%
D525981915.573303%

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 7023 5261 6 6 0.09% 0.11%
B 7022 5260 80 80 1.14% 1.52%
C 7022 5260 2 2 0.03% 0.04%
D 7022 5260 728 728 10.37% 13.84%

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 612126 5226.51 572 560 117.0
A 12 189 53392 451.51 572 560 117.0
A 13 6 16480 136.05 572 560 117.0
B 15 35 302890 2798.24 564 549 108.0
B 3 112 63589 583.45 564 549 108.0
B 5 255 52514 480.95 564 549 108.0
C 15 214 219890 1658.42 566 567 132.2
C 3 233 28540 211.52 566 567 132.2
C 12 249 10900 78.13 566 567 132.2
D 2 249 790946 6134.53 529 513 128.8
D 13 249 724021 5615.13 529 513 128.8
D 1 47 642430 4981.9 529 513 128.8

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