ASTROSAT CZTI

Data Quality Report

Orbit 27936

Creation date: 2024-06-27T19:46:11.075343
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/AS1A10_016T01_9000004034_27936cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27936cztM0_level2_quad_clean.evt
Size (bytes)124,525,44025,560,000
Size118.8 MB 24.4 MB
Events in quadrant A829,839171,685
Events in quadrant B858,503176,119
Events in quadrant C860,147167,347
Events in quadrant D1,130,973159,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034720
B035940
C036330
D044050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1315110.836502%
B131590.684411%
C1314251.902588%
D1314513.881279%

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 1315 1315 1 1 0.08% 0.08%
B 1315 1315 0 0 0.00% 0.00%
C 1314 1314 0 0 0.00% 0.00%
D 1314 1314 38 38 2.89% 2.89%

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 8 192 4406 97.06 214 210 43.2
A 0 226 1934 39.88 214 210 43.2
A 13 254 1887 38.79 214 210 43.2
B 10 245 27674 689.4 207 204 39.8
B 0 183 10077 247.78 207 204 39.8
B 0 190 5898 142.9 207 204 39.8
C 14 238 33944 705.33 203 205 47.8
C 3 233 32750 680.37 203 205 47.8
C 2 16 1484 26.74 203 205 47.8
D 1 52 258747 5260.01 204 200 49.2
D 8 195 70781 1435.93 204 200 49.2
D 13 104 21098 425.16 204 200 49.2

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