ASTROSAT CZTI

Data Quality Report

Orbit 18571

Creation date: 2024-06-27T17:51:49.908548
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/AS1A05_167T01_9000002758_18571cztM0_level2.evt modeM0/AS1A05_167T01_9000002758_18571cztM0_level2_quad_clean.evt
Size (bytes)507,038,40098,939,520
Size483.5 MB 94.4 MB
Events in quadrant A3,381,728634,405
Events in quadrant B3,401,425660,609
Events in quadrant C3,642,487643,234
Events in quadrant D4,506,793622,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139632
B0140472
C0148444
D0174802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242881.409805%
B62431081.729938%
C62421862.979814%
D62425268.426786%

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 8987 6244 0 0 0.00% 0.00%
B 8988 6245 0 0 0.00% 0.00%
C 8987 6243 28 28 0.31% 0.45%
D 8987 6244 345 345 3.84% 5.53%

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 14 111 43753 250.34 857 842 171.4
A 15 191 21626 121.25 857 842 171.4
A 4 2 12335 67.05 857 842 171.4
B 4 216 19690 116.32 866 845 162.0
B 12 111 18434 108.57 866 845 162.0
B 11 111 16286 95.31 866 845 162.0
C 4 254 146552 749.71 842 851 194.3
C 14 238 131325 671.36 842 851 194.3
C 9 54 82402 419.62 842 851 194.3
D 7 238 849783 4285.49 824 802 198.1
D 1 52 307274 1547.01 824 802 198.1
D 9 1 150385 755.07 824 802 198.1

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