ASTROSAT CZTI

Data Quality Report

Orbit 09768

Creation date: 2024-06-27T15:50:25.135223
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/AS1A03_080T01_9000001392_09768cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09768cztM0_level2_quad_clean.evt
Size (bytes)2,550,096,000471,507,840
Size2.4 GB 449.7 MB
Events in quadrant A17,618,9842,934,442
Events in quadrant B18,670,6292,961,980
Events in quadrant C16,991,0862,948,118
Events in quadrant D21,350,4692,795,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079314290
B081815293
C078278236
D090898388

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0621
C0622
D0620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07820
B07824
C07826
D07822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384732640.686196%
B384823290.854945%
C384971080.280541%
D384627591.973376%

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 44585 38609 37 37 0.08% 0.10%
B 44585 38602 43 43 0.10% 0.11%
C 44585 38608 1 1 0.00% 0.00%
D 44585 38606 470 470 1.05% 1.22%

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 8 15 123194 132.82 4456 4366 894.6
A 15 239 118292 127.34 4456 4366 894.6
A 15 174 102397 109.58 4456 4366 894.6
B 0 214 355242 414.65 4491 4381 846.2
B 10 245 299393 348.64 4491 4381 846.2
B 4 239 236726 274.58 4491 4381 846.2
C 13 61 32625 28.25 4346 4365 1000.4
C 8 222 20283 15.91 4346 4365 1000.4
C 14 128 13578 9.21 4346 4365 1000.4
D 1 52 3672154 3513.05 4269 4171 1044.1
D 8 195 338098 319.82 4269 4171 1044.1
D 7 71 318148 300.72 4269 4171 1044.1

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