ASTROSAT CZTI

Data Quality Report

Orbit 15922

Creation date: 2024-06-27T17:15:10.910565
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/AS1A04_143T01_9000002344_15922cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15922cztM0_level2_quad_clean.evt
Size (bytes)714,960,000101,128,320
Size681.8 MB 96.4 MB
Events in quadrant A10,557,458542,902
Events in quadrant B3,630,050719,704
Events in quadrant C3,672,460676,274
Events in quadrant D3,341,749658,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359683
B0149252
C0150102
D0142552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6666244136.618662%
B66661622.430243%
C66661642.460246%
D6666671.005101%

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 9376 6668 1914 1914 20.41% 28.70%
B 9377 6668 3 3 0.03% 0.04%
C 9377 6668 0 0 0.00% 0.00%
D 9377 6669 2 2 0.02% 0.03%

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 15 239 7640426 51018.77 753 739 149.7
A 3 1 9572 58.99 753 739 149.7
A 0 226 6699 39.8 753 739 149.7
B 0 189 34536 196.71 906 884 171.1
B 12 111 19251 107.36 906 884 171.1
B 11 111 16562 91.64 906 884 171.1
C 3 233 148200 730.91 866 875 201.6
C 14 238 133511 658.04 866 875 201.6
C 7 247 9771 44.14 866 875 201.6
D 2 234 32357 148.96 873 851 211.5
D 2 152 12374 54.48 873 851 211.5
D 7 223 11995 52.69 873 851 211.5

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