ASTROSAT CZTI

Data Quality Report

Orbit 13234

Creation date: 2024-06-27T16:38:11.024120
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_216T01_9000001968_13234cztM0_level2.evt modeM0/AS1A04_216T01_9000001968_13234cztM0_level2_quad_clean.evt
Size (bytes)302,256,00053,953,920
Size288.3 MB 51.5 MB
Events in quadrant A2,174,569337,408
Events in quadrant B2,535,713335,795
Events in quadrant C1,850,927342,840
Events in quadrant D2,305,304320,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092110
B0103390
C085670
D097910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4211170.403705%
B42111784.227024%
C421120.047495%
D42111122.659701%

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 4212 4212 11 11 0.26% 0.26%
B 4212 4212 104 104 2.47% 2.47%
C 4212 4212 1 1 0.02% 0.02%
D 4212 4212 102 102 2.42% 2.42%

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 15 239 244127 2537.94 467 455 96.0
A 12 189 58788 607.56 467 455 96.0
A 12 96 44940 463.33 467 455 96.0
B 4 239 637020 7158.31 459 447 88.9
B 0 230 46160 514.05 459 447 88.9
B 0 214 23299 256.97 459 447 88.9
C 15 208 58406 539.97 459 460 107.3
C 13 61 3403 27.42 459 460 107.3
C 14 234 1659 11.17 459 460 107.3
D 1 52 453240 4115.9 450 436 110.0
D 8 195 108310 980.55 450 436 110.0
D 14 34 21656 192.89 450 436 110.0

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