ASTROSAT CZTI

Data Quality Report

Orbit 06666

Creation date: 2024-06-27T15:10:03.792809
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/AS1A02_075T01_9000000906_06666cztM0_level2.evt modeM0/AS1A02_075T01_9000000906_06666cztM0_level2_quad_clean.evt
Size (bytes)574,871,04065,724,480
Size548.2 MB 62.7 MB
Events in quadrant A2,935,251402,230
Events in quadrant B3,064,977397,976
Events in quadrant C3,769,372388,650
Events in quadrant D7,197,630345,563

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132462
B0134081
C0156911
D0258701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6521630.966109%
B6521721.104125%
C6521540.828094%
D6521166225.486889%

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 7261 6522 2 2 0.03% 0.03%
B 7261 6522 1 1 0.01% 0.02%
C 7261 6522 12 12 0.17% 0.18%
D 7261 6521 1215 1215 16.73% 18.63%

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 3 1 14565 89.48 753 734 154.6
A 8 15 8638 51.14 753 734 154.6
A 0 226 7173 41.66 753 734 154.6
B 4 80 36912 246.07 756 737 147.0
B 0 228 34071 226.75 756 737 147.0
B 4 81 25188 166.32 756 737 147.0
C 9 247 909921 5392.56 725 728 168.6
C 8 128 12082 67.34 725 728 168.6
C 8 112 6005 31.3 725 728 168.6
D 2 33 4481653 28453.3 642 622 157.5
D 8 195 94789 597.93 642 622 157.5
D 2 63 87557 552.01 642 622 157.5

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