ASTROSAT CZTI

Data Quality Report

Orbit 10175

Creation date: 2024-06-27T15:55:58.079313
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/AS1A03_133T01_9000001464_10175cztM0_level2.evt modeM0/AS1A03_133T01_9000001464_10175cztM0_level2_quad_clean.evt
Size (bytes)427,743,360108,478,080
Size407.9 MB 103.5 MB
Events in quadrant A2,979,673736,159
Events in quadrant B3,299,266733,025
Events in quadrant C2,819,399717,609
Events in quadrant D3,456,728688,233

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125272
B0136371
C0121851
D0139811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5871721.226367%
B5871821.396696%
C5871380.647249%
D5871871.481860%

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 7186 5871 1 1 0.01% 0.02%
B 7186 5872 13 13 0.18% 0.22%
C 7186 5872 0 0 0.00% 0.00%
D 7186 5871 31 31 0.43% 0.53%

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 15 174 20355 127.69 760 746 153.6
A 3 1 19105 119.55 760 746 153.6
A 8 15 16367 101.72 760 746 153.6
B 0 214 73413 518.4 748 735 140.2
B 5 255 57492 404.84 748 735 140.2
B 0 85 54611 384.29 748 735 140.2
C 8 128 7771 42.82 718 724 164.6
C 13 61 5574 29.47 718 724 164.6
C 8 112 4747 24.45 718 724 164.6
D 2 16 243243 1404.99 723 705 172.6
D 7 71 134420 774.59 723 705 172.6
D 8 195 112382 646.93 723 705 172.6

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