ASTROSAT CZTI

Data Quality Report

Orbit 29089

Creation date: 2024-06-27T20:00:25.961968
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/AS1T03_275T01_9000004180_29089cztM0_level2.evt modeM0/AS1T03_275T01_9000004180_29089cztM0_level2_quad_clean.evt
Size (bytes)1,242,267,840221,544,000
Size1.2 GB 211.3 MB
Events in quadrant A7,756,0511,422,659
Events in quadrant B8,392,7171,445,174
Events in quadrant C8,013,1521,380,462
Events in quadrant D12,335,2731,313,124

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338072
B0356082
C0340052
D0479962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16657980.588341%
B166571791.074623%
C166581981.188618%
D166587184.310241%

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 17526 16657 0 0 0.00% 0.00%
B 17526 16657 44 44 0.25% 0.26%
C 17527 16659 0 0 0.00% 0.00%
D 17528 16660 583 583 3.33% 3.50%

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 13 254 31850 74.69 1995 1950 400.3
A 6 16 23178 53.03 1995 1950 400.3
A 13 6 21132 47.92 1995 1950 400.3
B 5 255 163289 434.1 1977 1924 371.7
B 5 172 149939 398.19 1977 1924 371.7
B 10 245 127813 338.67 1977 1924 371.7
C 14 238 309365 682.15 1919 1930 450.7
C 3 233 149853 328.22 1919 1930 450.7
C 2 114 39312 82.94 1919 1930 450.7
D 1 52 2737485 6024.59 1906 1851 454.1
D 8 195 1929441 4245.06 1906 1851 454.1
D 12 233 174600 380.44 1906 1851 454.1

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