ASTROSAT CZTI

Data Quality Report

Orbit 19966

Creation date: 2024-06-27T18:09:21.572299
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/AS1A05_103T05_9000002974_19966cztM0_level2.evt modeM0/AS1A05_103T05_9000002974_19966cztM0_level2_quad_clean.evt
Size (bytes)801,279,360105,039,360
Size764.2 MB 100.2 MB
Events in quadrant A11,805,612435,448
Events in quadrant B3,777,678770,934
Events in quadrant C4,162,662731,360
Events in quadrant D4,002,602709,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403874
B0163272
C0172292
D0174702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7644403452.773417%
B76441662.171638%
C76442122.773417%
D76442333.048142%

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 8303 7643 3130 3130 37.70% 40.95%
B 8304 7644 11 11 0.13% 0.14%
C 8304 7645 44 44 0.53% 0.58%
D 8304 7644 129 129 1.55% 1.69%

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 14 238 9550558 81933.66 570 559 116.6
A 14 254 49015 415.73 570 559 116.6
A 11 29 6952 54.85 570 559 116.6
B 7 220 139435 809.27 901 876 171.2
B 0 190 23953 134.78 901 876 171.2
B 12 111 21298 119.28 901 876 171.2
C 9 221 493443 2421.41 867 872 203.4
C 14 238 136948 668.93 867 872 203.4
C 3 233 129842 634.0 867 872 203.4
D 12 218 488815 2347.37 861 837 207.9
D 7 238 181189 867.56 861 837 207.9
D 2 234 32288 151.29 861 837 207.9

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