ASTROSAT CZTI

Data Quality Report

Orbit 21065

Creation date: 2024-06-27T18:23:20.515734
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_155T04_9000003114_21065cztM0_level2.evt modeM0/AS1A05_155T04_9000003114_21065cztM0_level2_quad_clean.evt
Size (bytes)496,961,28094,049,280
Size473.9 MB 89.7 MB
Events in quadrant A3,395,007597,565
Events in quadrant B3,835,417597,976
Events in quadrant C3,429,436577,701
Events in quadrant D3,893,872566,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149171
B0159651
C0149401
D0165131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7311861.176310%
B73111692.311585%
C73111041.422514%
D73121662.270241%

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 7586 7312 0 0 0.00% 0.00%
B 7586 7312 39 39 0.51% 0.53%
C 7586 7312 0 0 0.00% 0.00%
D 7587 7313 33 33 0.43% 0.45%

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 13 254 10800 56.2 879 857 176.9
A 0 226 7585 38.03 879 857 176.9
A 3 137 7313 36.49 879 857 176.9
B 0 182 195776 1177.18 873 850 165.6
B 7 220 76750 458.37 873 850 165.6
B 0 219 71621 427.39 873 850 165.6
C 14 238 131693 658.9 844 851 198.6
C 13 61 5919 25.52 844 851 198.6
C 3 9 3746 14.58 844 851 198.6
D 9 1 315872 1526.2 851 825 206.4
D 1 52 149929 722.31 851 825 206.4
D 7 238 49326 234.96 851 825 206.4

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