ASTROSAT CZTI

Data Quality Report

Orbit 08884

Creation date: 2024-06-27T15:38:24.118440
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/AS1A03_065T01_9000001238_08884cztM0_level2.evt modeM0/AS1A03_065T01_9000001238_08884cztM0_level2_quad_clean.evt
Size (bytes)525,749,76078,840,000
Size501.4 MB 75.2 MB
Events in quadrant A4,253,692471,975
Events in quadrant B3,539,423482,797
Events in quadrant C3,454,606471,551
Events in quadrant D4,186,009459,524

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171083
B0149872
C0149642
D0167882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71991632.264203%
B71991391.930824%
C71991071.486318%
D71991231.708571%

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 9224 7199 19 19 0.21% 0.26%
B 9224 7199 0 0 0.00% 0.00%
C 9224 7199 13 13 0.14% 0.18%
D 9224 7199 23 23 0.25% 0.32%

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 8 5 603451 3279.14 901 883 183.8
A 15 174 140191 758.11 901 883 183.8
A 5 16 33598 178.03 901 883 183.8
B 12 111 19574 107.29 904 881 174.2
B 11 111 15661 84.83 904 881 174.2
B 4 173 12382 66.01 904 881 174.2
C 10 22 42408 203.92 871 876 203.7
C 13 61 6616 28.18 871 876 203.7
C 8 128 5513 22.77 871 876 203.7
D 8 195 601474 2815.75 866 844 213.3
D 2 152 68708 318.14 866 844 213.3
D 2 14 58119 268.5 866 844 213.3

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