ASTROSAT CZTI

Data Quality Report

Orbit 34761

Creation date: 2022-03-03T20:48:56.124034
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_004T01_9000004990_34761cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34761cztM0_level2_quad_clean.evt
Size (bytes)480,939,84086,739,840
Size458.7 MB 82.7 MB
Events in quadrant A2,754,638561,379
Events in quadrant B3,466,756565,115
Events in quadrant C3,012,308566,166
Events in quadrant D4,930,291520,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120022
B0140801
C0124451
D0186661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A591750.084502%
B5917530.895724%
C5917250.422511%
D59172303.887105%

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 7199 5918 0 0 0.00% 0.00%
B 7199 5918 39 39 0.54% 0.66%
C 7199 5918 14 14 0.19% 0.24%
D 7199 5918 235 235 3.26% 3.97%

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 40688 287.54 691 677 139.1
A 13 6 22651 157.92 691 677 139.1
A 13 254 11011 74.27 691 677 139.1
B 0 190 285263 2149.38 686 670 132.4
B 5 172 132699 997.15 686 670 132.4
B 5 255 118779 892.02 686 670 132.4
C 15 214 252506 1587.21 670 675 158.7
C 0 10 70012 437.01 670 675 158.7
C 14 67 50407 313.45 670 675 158.7
D 12 227 967747 5980.06 663 643 161.7
D 8 195 757132 4677.73 663 643 161.7
D 10 118 318048 1962.67 663 643 161.7

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