ASTROSAT CZTI

Data Quality Report

Orbit 37930

Creation date: 2024-06-27T21:46:17.556847
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/AS1A11_082T01_9000005356_37930cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37930cztM0_level2_quad_clean.evt
Size (bytes)245,946,24028,607,040
Size234.6 MB 27.3 MB
Events in quadrant A1,548,255164,569
Events in quadrant B1,761,063164,562
Events in quadrant C1,556,196166,676
Events in quadrant D2,379,112157,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063552
B070931
C063851
D090861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A297360.201816%
B2973511.715439%
C2973140.470905%
D297333711.335351%

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 4496 2974 2 2 0.04% 0.07%
B 4496 2974 34 34 0.76% 1.14%
C 4496 2974 9 9 0.20% 0.30%
D 4496 2974 307 307 6.83% 10.32%

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 199592 2781.2 341 334 71.6
A 12 189 12392 168.3 341 334 71.6
A 13 248 8930 119.98 341 334 71.6
B 5 172 152411 2304.13 340 331 66.0
B 4 81 86929 1312.03 340 331 66.0
B 0 229 80045 1207.73 340 331 66.0
C 15 214 124632 1587.6 335 335 78.3
C 0 10 68753 873.88 335 335 78.3
C 14 254 42588 539.68 335 335 78.3
D 12 227 1017824 13220.52 314 304 77.0
D 12 233 41260 532.14 314 304 77.0
D 10 199 37652 485.26 314 304 77.0

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