ASTROSAT CZTI

Data Quality Report

Orbit 15303

Creation date: 2024-06-27T17:06:29.345600
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_223T01_9000002258_15303cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15303cztM0_level2_quad_clean.evt
Size (bytes)492,580,80097,701,120
Size469.8 MB 93.2 MB
Events in quadrant A3,393,726620,055
Events in quadrant B3,674,832628,947
Events in quadrant C3,831,470617,055
Events in quadrant D3,521,634584,313

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150413
B0156022
C0157202
D0157802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7297370.507058%
B7297640.877073%
C7297250.342607%
D7297841.151158%

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 7753 7299 0 0 0.00% 0.00%
B 7753 7299 6 6 0.08% 0.08%
C 7753 7299 0 0 0.00% 0.00%
D 7753 7299 61 61 0.79% 0.84%

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 9 143 33314 182.18 871 851 178.2
A 0 226 7906 39.59 871 851 178.2
A 12 194 6436 31.34 871 851 178.2
B 10 16 99982 588.53 874 850 168.4
B 0 189 54054 315.87 874 850 168.4
B 0 197 43568 253.61 874 850 168.4
C 3 233 535246 2747.99 842 848 194.5
C 7 247 10717 50.75 842 848 194.5
C 13 61 6035 26.67 842 848 194.5
D 7 38 286730 1379.18 838 812 207.3
D 10 70 31765 149.31 838 812 207.3
D 2 234 27582 129.13 838 812 207.3

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