ASTROSAT CZTI

Data Quality Report

Orbit 30726

Creation date: 2024-06-27T20:18:56.447004
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_071T11_9000004436_30726cztM0_level2.evt modeM0/AS1A10_071T11_9000004436_30726cztM0_level2_quad_clean.evt
Size (bytes)627,004,80085,101,120
Size598.0 MB 81.2 MB
Events in quadrant A3,645,626545,192
Events in quadrant B5,353,775549,526
Events in quadrant C3,500,624518,626
Events in quadrant D6,032,149492,298

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148232
B0206004
C0144132
D0229892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6761650.961396%
B6760691.020710%
C6761691.020559%
D67611562.307351%

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 8756 6762 25 25 0.29% 0.37%
B 8755 6760 2 2 0.02% 0.03%
C 8756 6763 4 4 0.05% 0.06%
D 8756 6762 135 135 1.54% 2.00%

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 0 13 245492 1431.4 853 834 170.9
A 8 192 109830 637.7 853 834 170.9
A 13 254 11751 63.87 853 834 170.9
B 6 159 1946669 11998.16 846 827 162.2
B 3 209 43451 262.82 846 827 162.2
B 12 111 20119 118.96 846 827 162.2
C 14 238 132876 689.37 813 818 191.6
C 3 233 131781 683.65 813 818 191.6
C 0 10 45590 233.72 813 818 191.6
D 8 195 2693069 13997.79 808 788 192.3
D 13 249 78462 403.85 808 788 192.3
D 10 253 68024 349.58 808 788 192.3

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