ASTROSAT CZTI

Data Quality Report

Orbit 16118

Creation date: 2024-06-27T17:18:14.220660
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/AS1T02_094T01_9000002380_16118cztM0_level2.evt modeM0/AS1T02_094T01_9000002380_16118cztM0_level2_quad_clean.evt
Size (bytes)1,368,858,240220,101,120
Size1.3 GB 209.9 MB
Events in quadrant A9,195,3401,387,746
Events in quadrant B9,534,9851,382,377
Events in quadrant C9,505,2071,332,588
Events in quadrant D11,958,2471,275,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396725
B0402704
C0401374
D0482624

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186712631.408602%
B186712601.392534%
C186713772.019174%
D186718464.531091%

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 20937 18672 67 67 0.32% 0.36%
B 20937 18672 16 16 0.08% 0.09%
C 20937 18672 99 99 0.47% 0.53%
D 20937 18672 679 679 3.24% 3.64%

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 15 174 504915 1112.91 2245 2191 451.7
A 9 143 27915 56.95 2245 2191 451.7
A 8 247 23485 47.14 2245 2191 451.7
B 0 189 170859 390.65 2249 2193 431.8
B 7 220 120455 273.91 2249 2193 431.8
B 4 216 99273 224.85 2249 2193 431.8
C 9 236 651230 1288.01 2153 2168 503.9
C 14 238 328721 648.02 2153 2168 503.9
C 3 233 94683 183.59 2153 2168 503.9
D 5 222 1552911 2968.12 2147 2084 522.5
D 1 52 1175431 2245.66 2147 2084 522.5
D 7 38 937885 1791.02 2147 2084 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