ASTROSAT CZTI

Data Quality Report

Orbit 12709

Creation date: 2024-06-27T16:31:22.736550
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_174T01_9000001876_12709cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12709cztM0_level2_quad_clean.evt
Size (bytes)633,562,56081,129,600
Size604.2 MB 77.4 MB
Events in quadrant A2,967,555568,979
Events in quadrant B5,447,691462,556
Events in quadrant C2,824,375555,061
Events in quadrant D7,555,767464,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123372
B0199351
C0121041
D0264181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5802961.654602%
B5802110619.062392%
C5802560.965184%
D5802132822.888659%

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 7048 5804 12 12 0.17% 0.21%
B 7048 5804 915 915 12.98% 15.76%
C 7048 5804 2 2 0.03% 0.03%
D 7048 5804 1441 1441 20.45% 24.83%

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 15 174 59223 391.52 738 723 149.4
A 15 239 32937 215.6 738 723 149.4
A 12 189 20881 134.91 738 723 149.4
B 4 239 2760677 22181.22 658 644 124.4
B 3 209 37721 297.97 658 644 124.4
B 4 81 20559 160.05 658 644 124.4
C 15 208 42089 249.47 713 720 165.8
C 13 61 5172 26.84 713 720 165.8
C 8 222 2799 12.53 713 720 165.8
D 1 52 4707346 26900.66 654 644 175.0
D 10 157 260602 1485.76 654 644 175.0
D 13 104 48969 276.2 654 644 175.0

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