ASTROSAT CZTI

Data Quality Report

Orbit 11830

Creation date: 2024-06-27T16:18:51.891265
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/AS1A04_022T07_9000001748_11830cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11830cztM0_level2_quad_clean.evt
Size (bytes)872,746,56083,505,600
Size832.3 MB 79.6 MB
Events in quadrant A3,667,271551,966
Events in quadrant B13,734,045362,424
Events in quadrant C3,412,371563,912
Events in quadrant D5,107,159523,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159241
B0459600
C0155440
D0203840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75401762.334218%
B7540456160.490716%
C7540650.862069%
D75403704.907162%

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 7541 7541 2 2 0.03% 0.03%
B 7541 7541 4068 4068 53.95% 53.95%
C 7541 7541 6 6 0.08% 0.08%
D 7541 7541 295 295 3.91% 3.91%

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 1 162 91093 495.66 885 862 182.0
A 1 178 46728 251.95 885 862 182.0
A 1 161 41593 223.75 885 862 182.0
B 10 16 10083414 79537.37 663 645 126.8
B 4 239 638798 5034.03 663 645 126.8
B 15 204 239994 1888.09 663 645 126.8
C 7 238 31046 149.73 866 870 201.5
C 13 61 6474 27.81 866 870 201.5
C 8 222 4593 18.47 866 870 201.5
D 12 233 674607 3263.18 852 829 206.5
D 5 222 528297 2554.59 852 829 206.5
D 1 52 445570 2153.93 852 829 206.5

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