ASTROSAT CZTI

Data Quality Report

Orbit 26913

Creation date: 2024-06-27T19:34:27.056710
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/AS1A09_038T19_9000003892_26913cztM0_level2.evt modeM0/AS1A09_038T19_9000003892_26913cztM0_level2_quad_clean.evt
Size (bytes)782,858,880115,110,720
Size746.6 MB 109.8 MB
Events in quadrant A3,431,840808,188
Events in quadrant B8,286,129713,604
Events in quadrant C3,499,161806,938
Events in quadrant D8,005,341655,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148420
B0292610
C0149210
D0285520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71712393.332868%
B7172236232.933631%
C71722753.834356%
D7172197727.565533%

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 7296 7171 0 0 0.00% 0.00%
B 7297 7172 1903 1903 26.08% 26.53%
C 7297 7173 3 3 0.04% 0.04%
D 7297 7172 1494 1494 20.47% 20.83%

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 5 168 31536 174.87 874 852 175.5
A 0 13 15695 84.59 874 852 175.5
A 8 192 15030 80.8 874 852 175.5
B 0 189 5036582 34043.57 774 752 147.9
B 0 190 99059 664.58 774 752 147.9
B 10 245 85435 572.48 774 752 147.9
C 14 238 135960 685.59 853 858 197.1
C 15 208 33178 164.01 853 858 197.1
C 13 61 5840 25.28 853 858 197.1
D 1 52 4453123 25201.62 749 727 176.7
D 7 80 493170 2787.34 749 727 176.7
D 2 250 149755 843.53 749 727 176.7

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