ASTROSAT CZTI

Data Quality Report

Orbit 24960

Creation date: 2024-06-27T19:11:59.277952
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/AS1T03_200T01_9000003654_24960cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24960cztM0_level2_quad_clean.evt
Size (bytes)491,025,600127,958,400
Size468.3 MB 122.0 MB
Events in quadrant A3,184,076869,894
Events in quadrant B3,715,939874,824
Events in quadrant C3,273,905832,723
Events in quadrant D4,225,709814,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141751
B0155881
C0142731
D0170201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69341261.817133%
B69352123.056957%
C69351472.119683%
D69351462.105263%

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 7159 6936 0 0 0.00% 0.00%
B 7160 6937 36 36 0.50% 0.52%
C 7160 6937 0 0 0.00% 0.00%
D 7160 6937 25 25 0.35% 0.36%

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 11309 62.85 824 805 167.1
A 3 137 7576 40.52 824 805 167.1
A 0 226 7027 37.23 824 805 167.1
B 0 229 217858 1408.7 812 789 154.1
B 3 64 152779 986.36 812 789 154.1
B 4 80 57829 370.17 812 789 154.1
C 14 238 123961 669.99 784 787 183.8
C 7 247 50409 269.91 784 787 183.8
C 3 233 24685 129.99 784 787 183.8
D 8 195 516710 2720.29 794 769 189.7
D 1 52 343721 1808.21 794 769 189.7
D 1 3 165960 870.97 794 769 189.7

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