ASTROSAT CZTI

Data Quality Report

Orbit 42164

Creation date: 2024-06-27T22:37:55.285910
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_088T21_9000005764_42164cztM0_level2.fits modeM0/AS1A12_088T21_9000005764_42164cztM0_level2_quad_clean.evt
Size (bytes)563,783,040132,799,680
Size537.7 MB 126.6 MB
Events in quadrant A6,032,431857,505
Events in quadrant B4,034,330919,068
Events in quadrant C3,860,005881,498
Events in quadrant D6,284,811774,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230492
B0179262
C0170072
D0244952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84764064.789995%
B8476580.684285%
C847620.023596%
D84764345.120340%

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 9818 8477 332 332 3.38% 3.92%
B 9818 8477 45 45 0.46% 0.53%
C 9818 8477 0 0 0.00% 0.00%
D 9818 8477 385 385 3.92% 4.54%

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 15 223 935144 5016.66 903 886 186.2
A 10 83 765201 4104.12 903 886 186.2
A 15 222 698892 3748.06 903 886 186.2
B 15 35 203742 1142.81 911 888 177.5
B 0 229 135113 756.18 911 888 177.5
B 5 255 57380 318.26 911 888 177.5
C 15 214 351964 1680.77 893 899 208.9
C 12 249 18757 85.5 893 899 208.9
C 0 207 7864 33.35 893 899 208.9
D 12 33 1173920 5469.95 875 852 214.5
D 12 6 493562 2297.48 875 852 214.5
D 13 249 412803 1920.9 875 852 214.5

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