ASTROSAT CZTI

Data Quality Report

Orbit 14164

Creation date: 2024-06-27T16:51:31.430000
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/AS1G08_024T02_9000002094_14164cztM0_level2.evt modeM0/AS1G08_024T02_9000002094_14164cztM0_level2_quad_clean.evt
Size (bytes)101,367,36029,070,720
Size96.7 MB 27.7 MB
Events in quadrant A673,063187,128
Events in quadrant B861,053186,966
Events in quadrant C709,851202,628
Events in quadrant D723,106194,159

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029882
B035011
C030061
D030281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147440.271370%
B1474372.510176%
C147410.067843%
D147410.067843%

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 1475 1475 0 0 0.00% 0.00%
B 1475 1475 17 17 1.15% 1.15%
C 1475 1475 0 0 0.00% 0.00%
D 1475 1475 0 0 0.00% 0.00%

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 12 189 4965 129.65 173 170 37.0
A 0 226 1563 37.67 173 170 37.0
A 12 194 1345 31.77 173 170 37.0
B 0 85 155678 4461.07 172 168 34.9
B 10 252 21839 621.67 172 168 34.9
B 4 80 5833 162.51 172 168 34.9
C 3 233 33166 785.23 173 174 42.0
C 14 234 1486 31.23 173 174 42.0
C 13 61 1233 25.21 173 174 42.0
D 8 195 69978 1664.9 169 165 41.9
D 2 234 4180 95.75 169 165 41.9
D 2 152 3753 85.57 169 165 41.9

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