ASTROSAT CZTI

Data Quality Report

Orbit 17875

Creation date: 2024-06-27T17:41:56.111711
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/AS1A05_085T01_9000002658_17875cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17875cztM0_level2_quad_clean.evt
Size (bytes)134,064,00042,848,640
Size127.9 MB 40.9 MB
Events in quadrant A980,642297,176
Events in quadrant B1,057,974303,192
Events in quadrant C962,724282,104
Events in quadrant D925,687274,955

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041811
B043881
C041141
D040711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191930.156331%
B1920100.520833%
C192050.260417%
D192020.104167%

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 1919 1919 0 0 0.00% 0.00%
B 1920 1920 1 1 0.05% 0.05%
C 1920 1920 0 0 0.00% 0.00%
D 1920 1920 2 2 0.10% 0.10%

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 0 226 2306 39.38 255 250 52.2
A 12 194 1841 30.47 255 250 52.2
A 3 137 1803 29.74 255 250 52.2
B 0 183 31586 626.24 255 250 50.0
B 4 171 8757 170.01 255 250 50.0
B 4 216 8250 159.88 255 250 50.0
C 14 238 37922 676.42 234 237 55.7
C 3 233 5184 88.8 234 237 55.7
C 9 160 1980 31.29 234 237 55.7
D 7 238 22055 353.04 235 228 61.8
D 2 234 8001 125.72 235 228 61.8
D 8 195 4415 67.72 235 228 61.8

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