ASTROSAT CZTI

Data Quality Report

Orbit 20823

Creation date: 2024-06-27T18:19:58.539757
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_013T01_9000003070_20823cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20823cztM0_level2_quad_clean.evt
Size (bytes)2,131,381,440276,212,160
Size2.0 GB 263.4 MB
Events in quadrant A10,544,9031,838,003
Events in quadrant B12,031,6781,819,732
Events in quadrant C10,673,4661,775,373
Events in quadrant D29,754,7291,353,824

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04660
C04660
D04660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0465394
B0505684
C0466054
D01037958

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229051080.471513%
B229063141.370820%
C229061660.724701%
D22905723431.582624%

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 25450 22906 0 0 0.00% 0.00%
B 25451 22906 111 111 0.44% 0.48%
C 25451 22908 0 0 0.00% 0.00%
D 25449 22905 7096 7096 27.88% 30.98%

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 0 226 23912 38.56 2741 2678 550.6
A 3 137 22120 35.31 2741 2678 550.6
A 12 194 19657 30.84 2741 2678 550.6
B 7 220 360072 706.45 2710 2644 506.0
B 0 189 246100 481.18 2710 2644 506.0
B 0 219 168985 328.77 2710 2644 506.0
C 14 238 408929 667.55 2610 2629 608.6
C 9 54 48080 74.68 2610 2629 608.6
C 10 91 26335 38.95 2610 2629 608.6
D 1 52 18001684 33844.39 2215 2152 531.8
D 1 20 2153098 4044.41 2215 2152 531.8
D 7 38 458539 858.14 2215 2152 531.8

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