ASTROSAT CZTI

Data Quality Report

Orbit 10899

Creation date: 2024-06-27T16:05:23.274785
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/AS1A04_055T02_9000001576_10899cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10899cztM0_level2_quad_clean.evt
Size (bytes)779,506,560107,542,080
Size743.4 MB 102.6 MB
Events in quadrant A6,735,468683,716
Events in quadrant B5,734,426714,890
Events in quadrant C3,080,373744,358
Events in quadrant D7,623,676664,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243682
B0214341
C0133801
D0269081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6426132320.588235%
B642680712.558357%
C6426721.120448%
D642696815.063803%

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 7666 6426 880 880 11.48% 13.69%
B 7666 6426 527 527 6.87% 8.20%
C 7666 6427 0 0 0.00% 0.00%
D 7666 6427 1061 1061 13.84% 16.51%

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 8 5 3741036 24084.93 764 748 155.3
A 15 223 18749 115.91 764 748 155.3
A 8 6 12756 77.32 764 748 155.3
B 4 239 2124738 14267.21 788 773 148.9
B 10 245 394881 2647.32 788 773 148.9
B 0 219 73529 488.72 788 773 148.9
C 14 234 9006 45.58 786 791 180.2
C 13 61 5849 28.07 786 791 180.2
C 8 222 3595 15.56 786 791 180.2
D 13 152 3820201 20532.97 766 744 186.0
D 5 222 409404 2196.91 766 744 186.0
D 10 199 135936 726.78 766 744 186.0

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