ASTROSAT CZTI

Data Quality Report

Orbit 23145

Creation date: 2024-06-27T18:50:27.239675
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_173T01_9000003416_23145cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23145cztM0_level2_quad_clean.evt
Size (bytes)414,550,080117,535,680
Size395.3 MB 112.1 MB
Events in quadrant A2,732,430801,132
Events in quadrant B2,867,170833,024
Events in quadrant C3,330,958779,832
Events in quadrant D3,259,354770,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117282
B0120662
C0133982
D0134092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5362671.249534%
B5362901.678478%
C53622614.867587%
D53621312.443118%

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 6722 5363 0 0 0.00% 0.00%
B 6722 5363 2 2 0.03% 0.04%
C 6722 5362 111 111 1.65% 2.07%
D 6722 5363 29 29 0.43% 0.54%

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 13 254 8625 56.6 707 695 140.1
A 6 16 7526 48.76 707 695 140.1
A 0 226 6109 38.64 707 695 140.1
B 0 190 53412 403.35 716 698 130.7
B 12 111 14626 106.57 716 698 130.7
B 11 111 12885 93.25 716 698 130.7
C 0 10 381774 2429.78 682 686 156.8
C 8 208 150615 955.93 682 686 156.8
C 14 238 109699 695.05 682 686 156.8
D 1 52 356688 2125.9 698 680 167.5
D 12 233 115354 684.77 698 680 167.5
D 13 153 42298 248.52 698 680 167.5

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