ASTROSAT CZTI

Data Quality Report

Orbit 25958

Creation date: 2024-06-27T19:23:15.993190
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/AS1A07_068T01_9000003760_25958cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25958cztM0_level2_quad_clean.evt
Size (bytes)535,913,280106,868,160
Size511.1 MB 101.9 MB
Events in quadrant A3,557,895701,007
Events in quadrant B4,027,738690,399
Events in quadrant C3,529,859662,622
Events in quadrant D4,603,633658,574

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155260
B0169840
C0154760
D0188910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7529660.876610%
B75292643.506442%
C7530901.195219%
D75302313.067729%

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 8244 7531 0 0 0.00% 0.00%
B 8244 7531 23 23 0.28% 0.31%
C 8245 7532 0 0 0.00% 0.00%
D 8245 7532 157 157 1.90% 2.08%

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 11489 57.1 920 898 185.5
A 3 137 8830 42.76 920 898 185.5
A 0 226 7904 37.77 920 898 185.5
B 0 245 323027 1841.8 903 882 174.9
B 0 190 88943 503.47 903 882 174.9
B 0 219 41259 230.85 903 882 174.9
C 14 238 138315 672.64 865 867 204.3
C 3 233 17267 80.26 865 867 204.3
C 13 61 5948 24.87 865 867 204.3
D 1 52 1081382 5175.14 873 854 208.8
D 7 80 151943 723.63 873 854 208.8
D 2 234 29629 137.82 873 854 208.8

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