ASTROSAT CZTI

Data Quality Report

Orbit 08898

Creation date: 2024-06-27T15:38:42.429150
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_092T01_9000001240_08898cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08898cztM0_level2_quad_clean.evt
Size (bytes)445,973,76077,811,840
Size425.3 MB 74.2 MB
Events in quadrant A3,377,162482,232
Events in quadrant B3,134,437484,898
Events in quadrant C2,930,605477,849
Events in quadrant D3,628,445463,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0200
C0200
D0211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01344
B01342
C01344
D01344

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014152255
B013777268
C013455228
D015043253

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6413971.512553%
B64141131.761771%
C6418811.262075%
D64191261.962923%

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 9007 6430 6 6 0.07% 0.09%
B 9007 6429 18 18 0.20% 0.28%
C 9007 6435 0 0 0.00% 0.00%
D 9007 6435 35 35 0.39% 0.54%

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 353231 2213.41 775 757 159.2
A 5 16 32492 199.28 775 757 159.2
A 0 226 7213 40.54 775 757 159.2
B 10 16 81001 541.08 774 756 148.3
B 6 51 25627 167.7 774 756 148.3
B 12 111 15815 101.54 774 756 148.3
C 13 61 5640 27.93 750 753 175.0
C 12 4 2746 11.39 750 753 175.0
C 14 234 2651 10.85 750 753 175.0
D 8 195 390745 2052.44 745 726 190.0
D 7 71 113048 591.08 745 726 190.0
D 12 233 94543 493.7 745 726 190.0

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