ASTROSAT CZTI

Data Quality Report

Orbit 36446

Creation date: 2022-07-19T04:30:48.384276
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_009T01_9000005200_36446cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36446cztM0_level2_quad_clean.evt
Size (bytes)1,856,836,800333,339,840
Size1.7 GB 317.9 MB
Events in quadrant A11,593,4162,141,352
Events in quadrant B14,964,0392,137,808
Events in quadrant C13,696,6232,110,335
Events in quadrant D14,337,6822,031,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502627
B0606886
C0555146
D0592706

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B04980
C04980
D04980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24348610.250534%
B243486362.612124%
C243486182.538196%
D243484882.004271%

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 31961 24353 28 28 0.09% 0.11%
B 31961 24353 368 368 1.15% 1.51%
C 31961 24353 459 459 1.44% 1.88%
D 31961 24353 397 397 1.24% 1.63%

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 709939 1278.9 2765 2707 553.0
A 9 143 108447 191.21 2765 2707 553.0
A 13 254 43155 73.14 2765 2707 553.0
B 5 172 1493822 2924.08 2704 2635 510.0
B 5 255 1208447 2364.48 2704 2635 510.0
B 0 189 469423 915.33 2704 2635 510.0
C 0 207 1559790 2551.95 2659 2679 610.2
C 15 214 1028305 1680.9 2659 2679 610.2
C 0 10 686495 1120.71 2659 2679 610.2
D 13 249 1516139 2323.89 2694 2623 651.3
D 10 199 534049 815.96 2694 2623 651.3
D 2 249 454337 693.57 2694 2623 651.3

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