ASTROSAT CZTI

Data Quality Report

Orbit 27057

Creation date: 2024-06-27T19:36:00.199413
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_120T02_9000003904_27057cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27057cztM0_level2_quad_clean.evt
Size (bytes)905,339,520113,653,440
Size863.4 MB 108.4 MB
Events in quadrant A8,338,622692,728
Events in quadrant B9,694,475727,173
Events in quadrant C3,777,189759,894
Events in quadrant D5,095,952733,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298170
B0338900
C0159260
D0205210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7593145419.149216%
B7594262334.540427%
C75941191.567027%
D75943414.490387%

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 8938 7593 1272 1272 14.23% 16.75%
B 8939 7594 2177 2177 24.35% 28.67%
C 8939 7594 1 1 0.01% 0.01%
D 8939 7595 223 223 2.49% 2.94%

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 14 235 4898794 27464.04 890 874 178.3
A 13 254 11851 61.55 890 874 178.3
A 6 16 8256 41.39 890 874 178.3
B 0 189 6146407 38215.23 837 817 160.8
B 10 246 180114 1114.93 837 817 160.8
B 10 245 61516 377.45 837 817 160.8
C 14 238 148901 671.31 924 932 220.4
C 15 208 21125 91.61 924 932 220.4
C 3 9 13603 57.49 924 932 220.4
D 1 52 1443191 6543.93 912 890 220.4
D 2 250 149417 673.89 912 890 220.4
D 2 234 30968 136.47 912 890 220.4

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