ASTROSAT CZTI

Data Quality Report

Orbit 25673

Creation date: 2024-06-27T19:20:16.561204
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/AS1A09_043T01_9000003744_25673cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25673cztM0_level2_quad_clean.evt
Size (bytes)447,298,56084,340,800
Size426.6 MB 80.4 MB
Events in quadrant A3,227,288549,179
Events in quadrant B3,082,030550,248
Events in quadrant C2,945,546517,056
Events in quadrant D3,872,253506,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138290
B0130210
C0127220
D0157660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171340.550964%
B6171370.599579%
C6172651.053143%
D6171881.426025%

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 7166 6172 0 0 0.00% 0.00%
B 7166 6172 4 4 0.06% 0.06%
C 7167 6173 0 0 0.00% 0.00%
D 7166 6172 57 57 0.80% 0.92%

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 8 192 263292 1679.95 767 751 156.3
A 13 254 9759 57.64 767 751 156.3
A 3 137 7003 40.01 767 751 156.3
B 3 112 43051 288.83 759 742 146.5
B 0 190 32581 217.36 759 742 146.5
B 0 245 22237 146.74 759 742 146.5
C 14 238 116213 676.74 724 728 170.6
C 3 233 7186 37.84 724 728 170.6
C 13 61 5077 25.49 724 728 170.6
D 8 195 752493 4202.79 735 715 178.9
D 1 52 86570 479.97 735 715 178.9
D 5 233 76453 423.41 735 715 178.9

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