ASTROSAT CZTI

Data Quality Report

Orbit 14092

Creation date: 2024-06-27T16:50:15.345028
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_022T01_9000002078_14092cztM0_level2.evt modeM0/AS1G08_022T01_9000002078_14092cztM0_level2_quad_clean.evt
Size (bytes)482,961,60080,225,280
Size460.6 MB 76.5 MB
Events in quadrant A2,920,122527,172
Events in quadrant B4,625,309495,125
Events in quadrant C2,888,069508,014
Events in quadrant D3,778,608472,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126272
B0176541
C0124541
D0150741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101610.999836%
B610164610.588428%
C6101380.622849%
D61012944.818882%

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 6927 6103 7 7 0.10% 0.11%
B 6927 6102 317 317 4.58% 5.20%
C 6927 6103 2 2 0.03% 0.03%
D 6927 6102 162 162 2.34% 2.65%

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 70655 471.71 730 715 148.3
A 12 189 30317 199.65 730 715 148.3
A 8 15 9541 59.53 730 715 148.3
B 10 16 1791843 13543.37 691 673 132.3
B 0 189 47866 356.84 691 673 132.3
B 0 214 20234 147.9 691 673 132.3
C 3 233 86024 515.69 710 713 165.4
C 0 207 20359 118.76 710 713 165.4
C 8 128 6914 37.48 710 713 165.4
D 1 52 329987 1781.94 688 674 184.8
D 7 80 278015 1500.71 688 674 184.8
D 10 157 190377 1026.5 688 674 184.8

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