ASTROSAT CZTI

Data Quality Report

Orbit 12666

Creation date: 2024-06-27T16:30:46.614772
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/AS1A04_174T01_9000001876_12666cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12666cztM0_level2_quad_clean.evt
Size (bytes)476,288,64088,110,720
Size454.2 MB 84.0 MB
Events in quadrant A3,333,858588,763
Events in quadrant B4,759,784515,223
Events in quadrant C2,919,612582,442
Events in quadrant D2,997,501556,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139182
B0181411
C0126171
D0130261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6096631.033465%
B609679413.024934%
C6096530.869423%
D6096751.230315%

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 7332 6097 3 3 0.04% 0.05%
B 7331 6096 527 527 7.19% 8.65%
C 7332 6097 0 0 0.00% 0.00%
D 7332 6097 14 14 0.19% 0.23%

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 5 112 342771 2186.3 767 753 156.4
A 12 189 28901 179.93 767 753 156.4
A 8 15 8542 49.79 767 753 156.4
B 4 239 1737772 13096.53 707 691 132.6
B 3 64 97852 732.53 707 691 132.6
B 11 51 43219 320.64 707 691 132.6
C 15 208 6861 35.11 746 755 173.9
C 13 61 5311 26.2 746 755 173.9
C 8 222 4261 20.16 746 755 173.9
D 13 104 56419 288.9 737 723 192.8
D 10 199 48762 249.18 737 723 192.8
D 1 52 42097 214.61 737 723 192.8

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