ASTROSAT CZTI

Data Quality Report

Orbit 16707

Creation date: 2024-06-27T17:26:30.749642
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/AS1T03_024T01_9000002472_16707cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16707cztM0_level2_quad_clean.evt
Size (bytes)918,544,320103,222,080
Size876.0 MB 98.4 MB
Events in quadrant A4,316,287726,292
Events in quadrant B4,055,888734,351
Events in quadrant C3,991,017709,382
Events in quadrant D14,958,164442,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177203
B0167542
C0166392
D0495062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73513755.101347%
B73511922.611890%
C73511922.611890%
D7351483965.827779%

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 7717 7354 112 112 1.45% 1.52%
B 7717 7354 5 5 0.06% 0.07%
C 7717 7354 2 2 0.03% 0.03%
D 7717 7354 3741 3741 48.48% 50.87%

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 724707 3828.57 922 903 189.1
A 4 2 22283 113.09 922 903 189.1
A 3 1 12787 62.86 922 903 189.1
B 15 35 130503 711.21 938 916 182.2
B 5 236 101795 553.65 938 916 182.2
B 0 229 37101 198.59 938 916 182.2
C 3 233 281330 1312.36 905 914 213.7
C 14 238 139903 650.48 905 914 213.7
C 0 207 33808 153.95 905 914 213.7
D 1 52 7920842 49239.39 654 637 160.9
D 2 16 4355359 27073.02 654 637 160.9
D 13 248 73508 453.03 654 637 160.9

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