ASTROSAT CZTI

Data Quality Report

Orbit 24002

Creation date: 2024-06-27T19:01:01.645052
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_165T01_9000003558_24002cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24002cztM0_level2_quad_clean.evt
Size (bytes)523,523,520137,528,640
Size499.3 MB 131.2 MB
Events in quadrant A3,320,190944,930
Events in quadrant B3,515,612955,134
Events in quadrant C3,487,391908,784
Events in quadrant D5,059,352871,571

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143802
B0148402
C0147962
D0197643

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6960690.991379%
B69601071.537356%
C69601191.709770%
D69593444.943239%

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 7695 6961 0 0 0.00% 0.00%
B 7695 6961 4 4 0.05% 0.06%
C 7695 6961 5 5 0.06% 0.07%
D 7694 6960 193 193 2.51% 2.77%

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 6 16 27916 159.22 854 836 170.1
A 13 254 11890 64.99 854 836 170.1
A 0 226 7467 38.99 854 836 170.1
B 0 197 85734 536.21 851 830 158.3
B 0 245 30686 188.55 851 830 158.3
B 7 202 25180 153.78 851 830 158.3
C 14 238 128956 685.32 810 814 187.0
C 0 239 117853 625.94 810 814 187.0
C 10 9 44962 236.11 810 814 187.0
D 12 218 1091962 5554.48 810 784 196.5
D 1 52 374031 1899.96 810 784 196.5
D 8 195 197096 999.3 810 784 196.5

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