ASTROSAT CZTI

Data Quality Report

Orbit 39914

Creation date: 2024-06-27T22:10:15.050963
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/AS1A12_068T03_9000005508_39914cztM0_level2.fits modeM0/AS1A12_068T03_9000005508_39914cztM0_level2_quad_clean.evt
Size (bytes)340,865,28091,883,520
Size325.1 MB 87.6 MB
Events in quadrant A3,005,353615,935
Events in quadrant B2,918,292625,517
Events in quadrant C3,153,568597,563
Events in quadrant D3,106,415553,339

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122533
B0123922
C0128602
D0129892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5575300.538117%
B5575440.789238%
C5575801.434978%
D5575831.488789%

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 7097 5576 22 22 0.31% 0.39%
B 7096 5574 21 21 0.30% 0.38%
C 7096 5574 73 73 1.03% 1.31%
D 7096 5574 83 83 1.17% 1.49%

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 498894 3898.84 622 611 127.8
A 13 248 61766 478.51 622 611 127.8
A 10 248 17546 132.51 622 611 127.8
B 4 170 203756 1692.71 616 600 120.0
B 5 32 92954 769.5 616 600 120.0
B 0 230 51812 426.7 616 600 120.0
C 9 54 516279 3635.65 605 610 141.8
C 15 214 234242 1647.19 605 610 141.8
C 0 10 15894 107.76 605 610 141.8
D 2 250 237778 1554.47 608 590 152.6
D 2 249 138742 905.41 608 590 152.6
D 13 249 122632 799.83 608 590 152.6

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