ASTROSAT CZTI

Data Quality Report

Orbit 29495

Creation date: 2024-06-27T20:04:42.337951
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/AS1A10_064T03_9000004246_29495cztM0_level2.evt modeM0/AS1A10_064T03_9000004246_29495cztM0_level2_quad_clean.evt
Size (bytes)845,982,72098,225,280
Size806.8 MB 93.7 MB
Events in quadrant A3,163,385702,453
Events in quadrant B3,365,557710,723
Events in quadrant C3,823,242653,401
Events in quadrant D14,821,788445,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136352
B0142872
C0155142
D0485542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6603340.514917%
B6603490.742087%
C66035117.738907%
D6603457169.226109%

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 7623 6604 0 0 0.00% 0.00%
B 7623 6604 12 12 0.16% 0.18%
C 7623 6604 21 21 0.28% 0.32%
D 7623 6603 4624 4624 60.66% 70.03%

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 13 254 13306 77.24 814 798 161.9
A 15 174 10786 61.68 814 798 161.9
A 3 137 7766 43.03 814 798 161.9
B 0 190 77795 500.59 808 789 153.8
B 5 172 39582 252.18 808 789 153.8
B 15 33 36045 229.19 808 789 153.8
C 14 238 283014 1603.71 757 761 176.0
C 7 247 259743 1471.48 757 761 176.0
C 14 254 225749 1278.34 757 761 176.0
D 8 195 5097666 39069.74 547 530 130.5
D 12 33 3582773 27458.03 547 530 130.5
D 7 223 2198742 16849.38 547 530 130.5

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