ASTROSAT CZTI

Data Quality Report

Orbit 13839

Creation date: 2024-06-27T16:46:46.135768
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_199T01_9000002040_13839cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13839cztM0_level2_quad_clean.evt
Size (bytes)466,516,80067,821,120
Size444.9 MB 64.7 MB
Events in quadrant A3,287,919403,620
Events in quadrant B3,394,274411,394
Events in quadrant C3,195,021398,029
Events in quadrant D3,801,643378,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138613
B0140702
C0135982
D0155632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6621340.513518%
B6621711.072346%
C662180.120828%
D6621370.558828%

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 7777 6623 8 8 0.10% 0.12%
B 7777 6623 12 12 0.15% 0.18%
C 7777 6623 0 0 0.00% 0.00%
D 7777 6623 27 27 0.35% 0.41%

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 9 143 92560 548.84 825 808 167.2
A 1 162 10190 56.12 825 808 167.2
A 15 69 7939 42.66 825 808 167.2
B 0 219 43490 270.82 829 812 157.6
B 4 80 36320 225.32 829 812 157.6
B 3 209 28394 175.02 829 812 157.6
C 3 233 82558 440.14 798 804 185.7
C 13 61 5862 27.23 798 804 185.7
C 3 202 1861 5.69 798 804 185.7
D 10 157 379520 1890.03 785 766 200.4
D 1 52 131209 650.93 785 766 200.4
D 5 222 117473 582.38 785 766 200.4

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