ASTROSAT CZTI

Data Quality Report

Orbit 46694

Creation date: 2024-06-27T23:26:33.206296
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_092T20_9000006254_46694cztM0_level2.fits modeM0/AS1A13_092T20_9000006254_46694cztM0_level2_quad_clean.evt
Size (bytes)1,680,652,800352,192,320
Size1.6 GB 335.9 MB
Events in quadrant A20,804,6742,333,610
Events in quadrant B12,627,3332,430,337
Events in quadrant C10,457,7982,355,209
Events in quadrant D16,628,1502,032,385

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0756604
B0527634
C0474755
D0651034

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219576743.069636%
B219575242.386483%
C219562511.143195%
D2195716287.414492%

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 26422 21961 212 212 0.80% 0.97%
B 26422 21961 193 193 0.73% 0.88%
C 26421 21960 182 182 0.69% 0.83%
D 26422 21961 1279 1279 4.84% 5.82%

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 10936625 22192.43 2405 2357 492.7
A 15 254 175436 351.28 2405 2357 492.7
A 13 248 168427 337.06 2405 2357 492.7
B 4 171 1889779 4039.97 2427 2351 467.2
B 0 198 405917 863.82 2427 2351 467.2
B 0 190 328766 698.68 2427 2351 467.2
C 9 54 457714 815.08 2389 2409 558.6
C 14 254 347643 618.03 2389 2409 558.6
C 12 2 174493 308.06 2389 2409 558.6
D 1 52 4618740 7910.22 2289 2218 583.6
D 13 249 1598418 2735.02 2289 2218 583.6
D 12 128 523632 893.42 2289 2218 583.6

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