ASTROSAT CZTI

Data Quality Report

Orbit 20211123_T04_072T01_9000004780_level2

Creation date: 2021-11-27T21:35:30.310354
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/AS1T04_072T01_9000004780cztM0_level2_bc.evt modeM0/AS1T04_072T01_9000004780cztM0_level2_quad_clean.evt
Size (bytes)10,419,019,2002,393,251,200
Size9.7 GB 2.2 GB
Events in quadrant A45,548,87615,910,494
Events in quadrant B66,754,05915,177,640
Events in quadrant C73,064,27815,075,912
Events in quadrant D118,339,33514,357,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035660
B035660
C035660
D035660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03892370
B04900350
C04797120
D06425130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06770
B06770
C06770
D06770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17465121641.239042%
B174651119916.865692%
C17465170864.057234%
D174651127137.279088%

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 240889 174653 137 137 0.06% 0.08%
B 240889 174650 708 708 0.29% 0.41%
C 240889 174653 1853 1853 0.77% 1.06%
D 240889 174650 1860 1860 0.77% 1.06%

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 15 169 6795269 3241.46 9588 9475 2093.4
A 15 47 568184 266.89 9588 9475 2093.4
A 12 16 566453 266.06 9588 9475 2093.4
B 5 172 19793749 10955.92 9315 9154 1805.8
B 0 219 5639863 3118.06 9315 9154 1805.8
B 5 200 778441 426.0 9315 9154 1805.8
C 1 23 12714820 6257.44 9076 9035 2030.5
C 10 49 10818214 5323.38 9076 9035 2030.5
C 15 214 7248293 3565.24 9076 9035 2030.5
D 8 195 48679548 20228.45 9050 8861 2406.1
D 12 218 5121759 2125.02 9050 8861 2406.1
D 2 250 4984601 2068.01 9050 8861 2406.1

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