ASTROSAT CZTI

Data Quality Report

Orbit 23551

Creation date: 2024-06-27T18:56:03.174773
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/AS1A07_011T01_9000003482_23551cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23551cztM0_level2_quad_clean.evt
Size (bytes)405,878,40088,459,200
Size387.1 MB 84.4 MB
Events in quadrant A2,942,286580,475
Events in quadrant B2,986,650588,806
Events in quadrant C2,862,617556,907
Events in quadrant D3,107,331548,584

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121001
B0122831
C0119801
D0130281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5780470.813149%
B5780781.349481%
C5780641.107266%
D5779390.674857%

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 7110 5781 0 0 0.00% 0.00%
B 7110 5780 5 5 0.07% 0.09%
C 7110 5781 0 0 0.00% 0.00%
D 7109 5780 17 17 0.24% 0.29%

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 13 252 74395 501.54 738 724 146.9
A 2 79 12383 79.37 738 724 146.9
A 13 254 10108 63.88 738 724 146.9
B 0 189 36556 263.68 727 710 135.9
B 14 207 24546 175.34 727 710 135.9
B 0 230 22774 162.3 727 710 135.9
C 14 238 112897 705.46 693 698 159.0
C 14 67 17488 105.57 693 698 159.0
C 0 10 13593 81.08 693 698 159.0
D 1 52 231152 1359.25 706 686 169.6
D 9 85 173412 1018.71 706 686 169.6
D 2 234 23436 134.17 706 686 169.6

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