ASTROSAT CZTI

Data Quality Report

Orbit 01041

Creation date: 2024-06-27T14:06:34.965646
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/AS1P01_998T02_9000000190_01041cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01041cztM0_level2_quad_clean.evt
Size (bytes)963,869,760108,362,880
Size919.2 MB 103.3 MB
Events in quadrant A7,203,735731,275
Events in quadrant B7,526,325735,399
Events in quadrant C7,496,656697,369
Events in quadrant D6,563,879696,734

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256471
B0266531
C0265801
D0237793

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6032570.944960%
B6033550.911653%
C6033731.210012%
D6032470.779178%

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 7212 6033 218 218 3.02% 3.61%
B 7213 6034 254 254 3.52% 4.21%
C 7213 6034 285 285 3.95% 4.72%
D 7212 6033 163 163 2.26% 2.70%

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 15 127 14147 27.3 1873 1885 449.2
A 11 79 6643 10.59 1873 1885 449.2
A 3 111 5899 8.94 1873 1885 449.2
B 5 249 67660 145.57 1919 1921 451.6
B 8 234 46710 99.18 1919 1921 451.6
B 4 232 21546 43.46 1919 1921 451.6
C 12 4 266583 553.85 1734 1791 478.1
C 8 208 265835 552.28 1734 1791 478.1
C 15 241 124539 256.74 1734 1791 478.1
D 10 125 55458 102.74 1712 1773 522.5
D 2 16 45711 84.09 1712 1773 522.5
D 9 64 23954 42.45 1712 1773 522.5

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