ASTROSAT CZTI

Data Quality Report

Orbit 28717

Creation date: 2024-06-27T19:55:18.736975
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/AS1A10_123T03_9000004120_28717cztM0_level2.evt modeM0/AS1A10_123T03_9000004120_28717cztM0_level2_quad_clean.evt
Size (bytes)498,628,80099,987,840
Size475.5 MB 95.4 MB
Events in quadrant A3,305,259674,528
Events in quadrant B3,274,618676,839
Events in quadrant C3,362,437639,982
Events in quadrant D4,740,709606,457

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133261
B0132411
C0135561
D0180774

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6160590.957792%
B6161651.055024%
C6161981.590651%
D61604106.655844%

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 7456 6160 0 0 0.00% 0.00%
B 7457 6161 1 1 0.01% 0.02%
C 7457 6161 1 1 0.01% 0.02%
D 7455 6159 393 393 5.27% 6.38%

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 10120 55.11 852 840 168.4
A 12 16 8918 47.98 852 840 168.4
A 0 226 7554 39.87 852 840 168.4
B 12 111 18094 112.26 828 810 154.0
B 11 111 16764 103.62 828 810 154.0
B 14 111 15461 95.16 828 810 154.0
C 14 238 136595 740.81 797 803 183.3
C 3 233 81354 439.45 797 803 183.3
C 10 22 24575 129.69 797 803 183.3
D 1 52 903127 4857.42 797 780 185.8
D 7 80 509187 2736.81 797 780 185.8
D 8 195 248224 1332.02 797 780 185.8

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