ASTROSAT CZTI

Data Quality Report

Orbit 19871

Creation date: 2024-06-27T18:08:07.368976
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/AS1T03_118T01_9000002962_19871cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19871cztM0_level2_quad_clean.evt
Size (bytes)686,416,32073,232,640
Size654.6 MB 69.8 MB
Events in quadrant A5,414,333459,325
Events in quadrant B3,566,892478,622
Events in quadrant C4,353,600446,632
Events in quadrant D7,022,139387,349

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205312
B0147712
C0173973
D0251112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63754977.796078%
B63751282.007843%
C63742033.184813%
D6374164625.823659%

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 7540 6375 299 299 3.97% 4.69%
B 7540 6375 16 16 0.21% 0.25%
C 7539 6374 32 32 0.42% 0.50%
D 7539 6374 1465 1465 19.43% 22.98%

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 14 238 2200540 13284.38 833 818 165.6
A 0 226 7111 38.0 833 818 165.6
A 3 137 6300 33.11 833 818 165.6
B 7 220 96886 606.25 846 829 158.4
B 4 216 34260 211.0 846 829 158.4
B 0 244 29968 183.91 846 829 158.4
C 9 221 1048186 5549.31 812 820 188.7
C 14 238 128552 676.77 812 820 188.7
C 9 54 6985 32.66 812 820 188.7
D 1 52 4033365 22543.17 743 727 178.9
D 2 184 80790 447.57 743 727 178.9
D 7 238 60476 334.01 743 727 178.9

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