ASTROSAT CZTI

Data Quality Report

Orbit 26874

Creation date: 2024-06-27T19:33:56.024043
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_224T01_9000003872_26874cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26874cztM0_level2_quad_clean.evt
Size (bytes)706,697,28087,503,040
Size674.0 MB 83.4 MB
Events in quadrant A4,233,109601,907
Events in quadrant B3,907,327619,991
Events in quadrant C3,235,682598,247
Events in quadrant D9,563,021352,229

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170190
B0161650
C0140320
D0331560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68391752.558854%
B6839951.389092%
C6839620.906565%
D6839310045.328264%

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 7744 6840 114 114 1.47% 1.67%
B 7744 6839 32 32 0.41% 0.47%
C 7744 6840 1 1 0.01% 0.01%
D 7744 6839 2012 2012 25.98% 29.42%

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 0 13 1051341 6265.4 823 807 167.7
A 13 254 12005 66.79 823 807 167.7
A 3 137 7925 42.45 823 807 167.7
B 0 189 225944 1426.91 824 805 157.8
B 0 190 145767 918.75 824 805 157.8
B 3 64 114896 723.1 824 805 157.8
C 14 238 125296 666.25 790 795 186.9
C 2 16 17678 90.35 790 795 186.9
C 3 233 11803 58.91 790 795 186.9
D 7 80 6526240 52423.76 522 511 124.5
D 1 52 540874 4340.95 522 511 124.5
D 2 250 325221 2608.52 522 511 124.5

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