ASTROSAT CZTI

Data Quality Report

Orbit 20407

Creation date: 2024-06-27T18:15:01.570029
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_140T01_9000003016_20407cztM0_level2.evt modeM0/AS1A05_140T01_9000003016_20407cztM0_level2_quad_clean.evt
Size (bytes)441,279,36082,569,600
Size420.8 MB 78.7 MB
Events in quadrant A3,215,945529,208
Events in quadrant B3,453,516539,350
Events in quadrant C3,146,271506,625
Events in quadrant D3,131,679496,820

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133712
B0140523
C0130432
D0132592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6139140.228050%
B6138400.651678%
C6138520.847181%
D6138230.374715%

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 7425 6140 0 0 0.00% 0.00%
B 7424 6139 17 17 0.23% 0.28%
C 7424 6139 0 0 0.00% 0.00%
D 7424 6139 15 15 0.20% 0.24%

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 12 16 70341 429.85 815 803 161.8
A 12 194 16434 96.62 815 803 161.8
A 0 226 7004 38.33 815 803 161.8
B 10 245 140596 919.41 813 795 152.1
B 0 197 44720 288.88 813 795 152.1
B 0 189 43024 277.72 813 795 152.1
C 14 238 124241 697.0 768 775 177.1
C 3 233 13401 71.28 768 775 177.1
C 7 220 7423 37.53 768 775 177.1
D 13 153 86807 464.89 773 755 185.1
D 1 52 65895 351.91 773 755 185.1
D 6 143 48213 256.39 773 755 185.1

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