ASTROSAT CZTI

Data Quality Report

Orbit 11729

Creation date: 2024-06-27T16:17:31.521803
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/AS1G08_006T02_9000001730_11729cztM0_level2.evt modeM0/AS1G08_006T02_9000001730_11729cztM0_level2_quad_clean.evt
Size (bytes)586,644,480111,093,120
Size559.5 MB 105.9 MB
Events in quadrant A5,026,151724,952
Events in quadrant B4,656,963725,450
Events in quadrant C3,023,959739,561
Events in quadrant D4,595,025696,551

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196612
B0183461
C0140531
D0183581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68533084.494382%
B68534346.332993%
C6853741.079819%
D68532052.991391%

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 6964 6855 67 67 0.96% 0.98%
B 6964 6855 137 137 1.97% 2.00%
C 6964 6855 0 0 0.00% 0.00%
D 6964 6855 108 108 1.55% 1.58%

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 8 15 1360164 8458.15 791 771 160.7
A 9 143 231331 1434.55 791 771 160.7
A 1 162 137443 850.37 791 771 160.7
B 4 239 685082 4535.38 786 765 150.9
B 15 204 371821 2459.21 786 765 150.9
B 3 64 293199 1938.13 786 765 150.9
C 8 222 8975 45.84 772 773 178.9
C 13 61 5768 27.92 772 773 178.9
C 12 4 4037 18.24 772 773 178.9
D 10 157 693310 3722.09 767 742 186.1
D 2 33 232430 1245.17 767 742 186.1
D 4 95 185170 991.18 767 742 186.1

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