ASTROSAT CZTI

Data Quality Report

Orbit 25702

Creation date: 2024-06-27T19:20:34.341400
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/AS1A09_008T03_9000003746_25702cztM0_level2.evt modeM0/AS1A09_008T03_9000003746_25702cztM0_level2_quad_clean.evt
Size (bytes)489,133,44099,322,560
Size466.5 MB 94.7 MB
Events in quadrant A3,553,998658,424
Events in quadrant B3,317,100659,313
Events in quadrant C3,290,433621,076
Events in quadrant D4,204,232609,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146300
B0139790
C0139410
D0168270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6594530.803761%
B6595510.773313%
C6595801.213040%
D65942694.079466%

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 7569 6594 4 4 0.05% 0.06%
B 7570 6595 0 0 0.00% 0.00%
C 7570 6596 0 0 0.00% 0.00%
D 7569 6594 171 171 2.26% 2.59%

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 13 267874 1590.41 838 824 167.9
A 6 16 29579 171.25 838 824 167.9
A 3 1 28076 162.3 838 824 167.9
B 0 190 38485 239.15 823 803 157.6
B 0 219 23620 144.81 823 803 157.6
B 0 245 21152 129.15 823 803 157.6
C 14 238 124303 668.19 788 792 184.8
C 3 233 73256 392.03 788 792 184.8
C 0 207 16166 83.17 788 792 184.8
D 7 80 851057 4379.95 796 775 194.1
D 8 195 243256 1249.06 796 775 194.1
D 13 104 33318 167.63 796 775 194.1

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