ASTROSAT CZTI

Data Quality Report

Orbit 24420

Creation date: 2024-06-27T19:05:51.521940
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/AS1A07_054T01_9000003604_24420cztM0_level2.evt modeM0/AS1A07_054T01_9000003604_24420cztM0_level2_quad_clean.evt
Size (bytes)501,958,080129,816,000
Size478.7 MB 123.8 MB
Events in quadrant A2,959,727886,531
Events in quadrant B3,313,199916,697
Events in quadrant C3,118,461886,032
Events in quadrant D5,380,738800,786

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129892
B0139582
C0132612
D0203292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6333150.236855%
B6333550.868467%
C6333560.884257%
D63336049.537344%

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 7633 6334 0 0 0.00% 0.00%
B 7633 6334 14 14 0.18% 0.22%
C 7633 6334 0 0 0.00% 0.00%
D 7633 6334 445 445 5.83% 7.03%

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 10347 63.35 767 753 151.4
A 3 137 6522 38.1 767 753 151.4
A 0 226 6487 37.86 767 753 151.4
B 3 64 195886 1357.97 778 757 143.7
B 0 190 62791 431.72 778 757 143.7
B 12 111 16874 112.16 778 757 143.7
C 14 238 122396 700.62 756 763 173.6
C 2 16 36257 204.45 756 763 173.6
C 3 233 7766 40.34 756 763 173.6
D 7 238 1256159 7305.4 716 695 171.9
D 12 218 932911 5424.46 716 695 171.9
D 1 52 371215 2156.01 716 695 171.9

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