ASTROSAT CZTI

Data Quality Report

Orbit 09876

Creation date: 2024-06-27T15:51:44.885088
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_117T06_9000001404_09876cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09876cztM0_level2_quad_clean.evt
Size (bytes)546,180,48081,541,440
Size520.9 MB 77.8 MB
Events in quadrant A3,984,717482,586
Events in quadrant B3,836,965496,870
Events in quadrant C4,333,108478,649
Events in quadrant D3,850,663462,756

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172873
B0166872
C01848811
D0172542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78934365.523882%
B78934015.080451%
C78914655.892789%
D78933304.180920%

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 7998 7896 46 46 0.58% 0.58%
B 7998 7896 0 0 0.00% 0.00%
C 7998 7896 98 98 1.23% 1.24%
D 7998 7896 8 8 0.10% 0.10%

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 187904 933.78 972 948 200.2
A 13 14 34164 165.9 972 948 200.2
A 15 239 16974 80.04 972 948 200.2
B 0 85 42185 213.6 973 946 193.1
B 12 111 23955 119.18 973 946 193.1
B 11 111 19587 96.55 973 946 193.1
C 4 254 639559 2862.54 939 943 223.1
C 14 234 21968 94.24 939 943 223.1
C 13 61 7035 27.3 939 943 223.1
D 1 52 141492 575.63 938 916 244.2
D 10 199 105512 428.3 938 916 244.2
D 2 234 29666 117.73 938 916 244.2

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