ASTROSAT CZTI

Data Quality Report

Orbit 29549

Creation date: 2024-06-27T20:05:20.395796
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/AS1A10_094T09_9000004256_29549cztM0_level2.evt modeM0/AS1A10_094T09_9000004256_29549cztM0_level2_quad_clean.evt
Size (bytes)298,972,80038,306,880
Size285.1 MB 36.5 MB
Events in quadrant A1,623,721248,110
Events in quadrant B1,512,292254,479
Events in quadrant C1,715,080228,274
Events in quadrant D4,001,764218,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066761
B062741
C070071
D0139391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29441314.449728%
B29431244.213388%
C294354418.484540%
D294349616.853551%

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 3159 2945 8 8 0.25% 0.27%
B 3158 2944 4 4 0.13% 0.14%
C 3158 2944 0 0 0.00% 0.00%
D 3158 2944 356 356 11.27% 12.09%

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 160375 2053.59 377 368 77.9
A 13 254 5870 70.61 377 368 77.9
A 3 137 3895 45.27 377 368 77.9
B 5 255 27583 362.2 372 361 75.2
B 0 156 14656 190.2 372 361 75.2
B 12 111 9140 116.81 372 361 75.2
C 14 238 157728 1926.43 341 340 81.7
C 14 254 146063 1783.65 341 340 81.7
C 7 247 66390 808.45 341 340 81.7
D 8 195 2380881 26902.13 361 349 88.5
D 12 33 73124 822.42 361 349 88.5
D 7 80 63272 711.09 361 349 88.5

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