ASTROSAT CZTI

Data Quality Report

Orbit 44221

Creation date: 2024-06-27T23:00:40.329886
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/AS1A13_071T06_9000005972_44221cztM0_level2.fits modeM0/AS1A13_071T06_9000005972_44221cztM0_level2_quad_clean.evt
Size (bytes)400,697,28059,060,160
Size382.1 MB 56.3 MB
Events in quadrant A2,689,053448,231
Events in quadrant B2,341,131455,705
Events in quadrant C1,895,560431,106
Events in quadrant D7,568,516148,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110600
B099261
C090380
D0254860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4329110.254100%
B4328300.693161%
C432990.207900%
D4329280864.864865%

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 4329 4329 6 6 0.14% 0.14%
B 4328 4328 11 11 0.25% 0.25%
C 4329 4329 10 10 0.23% 0.23%
D 4328 4328 2154 2154 49.77% 49.77%

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 10 83 825076 8568.39 457 448 96.2
A 15 223 84576 874.14 457 448 96.2
A 2 79 11876 118.74 457 448 96.2
B 0 200 173660 1906.4 451 437 90.9
B 5 235 120184 1317.87 451 437 90.9
B 4 170 80422 880.27 451 437 90.9
C 14 254 94617 897.77 440 441 104.9
C 1 16 35022 329.66 440 441 104.9
C 3 233 19772 184.28 440 441 104.9
D 4 221 5853962 87650.76 252 243 66.8
D 13 249 381665 5711.23 252 243 66.8
D 1 52 199890 2989.42 252 243 66.8

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