ASTROSAT CZTI

Data Quality Report

Orbit 11929

Creation date: 2024-06-27T16:20:13.047136
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/AS1A04_124T01_9000001766_11929cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11929cztM0_level2_quad_clean.evt
Size (bytes)466,384,320128,062,080
Size444.8 MB 122.1 MB
Events in quadrant A3,282,925863,554
Events in quadrant B3,881,093873,115
Events in quadrant C2,962,917848,526
Events in quadrant D3,528,374812,611

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146203
B0163332
C0140532
D0153302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6904330.477984%
B69041692.447856%
C6904140.202781%
D6904510.738702%

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 7780 6906 5 5 0.06% 0.07%
B 7780 6906 80 80 1.03% 1.16%
C 7780 6906 0 0 0.00% 0.00%
D 7780 6906 39 39 0.50% 0.56%

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 1 162 81760 513.68 784 769 157.7
A 1 178 36608 227.31 784 769 157.7
A 1 161 31907 197.49 784 769 157.7
B 4 239 275267 1838.38 789 769 149.3
B 0 85 168032 1120.2 789 769 149.3
B 3 64 111321 740.4 789 769 149.3
C 13 61 5654 28.09 759 761 174.2
C 12 4 2769 11.53 759 761 174.2
C 14 234 2086 7.61 759 761 174.2
D 8 195 274176 1535.03 750 729 178.1
D 1 52 209317 1170.93 750 729 178.1
D 13 104 49538 274.0 750 729 178.1

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