ASTROSAT CZTI

Data Quality Report

Orbit 11183

Creation date: 2024-06-27T16:09:27.249610
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/AS1A04_171T01_9000001634_11183cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11183cztM0_level2_quad_clean.evt
Size (bytes)1,745,568,000285,523,200
Size1.6 GB 272.3 MB
Events in quadrant A13,006,7281,820,494
Events in quadrant B13,839,6441,821,012
Events in quadrant C9,100,6041,838,813
Events in quadrant D15,497,4801,717,161

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044822
B044824
C044925
D045327

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0555932640
B0580012697
C0450332269
D0630832495

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254
B0254
C0243
D0232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A210427193.416976%
B2105112235.809700%
C210911140.540515%
D2107212846.093394%

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 25309 21133 349 349 1.38% 1.65%
B 25309 21132 636 636 2.51% 3.01%
C 25309 21172 2 2 0.01% 0.01%
D 25309 21162 1187 1187 4.69% 5.61%

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 5 2678520 5533.48 2375 2324 483.6
A 15 174 405501 833.63 2375 2324 483.6
A 8 15 329870 677.25 2375 2324 483.6
B 4 239 3577895 7901.16 2371 2313 452.5
B 15 204 295011 646.79 2371 2313 452.5
B 11 51 277590 608.29 2371 2313 452.5
C 13 61 17089 27.33 2327 2337 539.8
C 12 4 15663 24.69 2327 2337 539.8
C 14 234 10068 14.32 2327 2337 539.8
D 10 157 3771335 6889.56 2270 2205 547.1
D 1 52 931599 1698.83 2270 2205 547.1
D 10 253 647697 1179.89 2270 2205 547.1

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