ASTROSAT CZTI

Data Quality Report

Orbit 29650

Creation date: 2024-06-27T20:06:29.600658
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/AS1C05_019T01_9000004270_29650cztM0_level2.evt modeM0/AS1C05_019T01_9000004270_29650cztM0_level2_quad_clean.evt
Size (bytes)507,718,080105,914,880
Size484.2 MB 101.0 MB
Events in quadrant A3,089,708687,924
Events in quadrant B3,197,278707,592
Events in quadrant C3,211,277687,031
Events in quadrant D5,412,517647,216

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139592
B0140721
C0141501
D0206941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68511231.795358%
B68521452.116170%
C68521071.561588%
D68523825.575015%

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 7031 6851 0 0 0.00% 0.00%
B 7032 6852 2 2 0.03% 0.03%
C 7032 6852 1 1 0.01% 0.01%
D 7031 6851 280 280 3.98% 4.09%

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 13 254 12107 69.93 798 779 162.0
A 3 137 8161 45.57 798 779 162.0
A 0 226 6676 36.4 798 779 162.0
B 0 229 35715 228.71 795 773 152.8
B 12 111 19403 121.94 795 773 152.8
B 11 111 17558 109.87 795 773 152.8
C 14 238 123390 681.75 768 769 179.9
C 7 247 29901 161.97 768 769 179.9
C 10 22 23636 127.14 768 769 179.9
D 7 80 1513979 8319.25 760 737 181.9
D 8 195 578220 3174.79 760 737 181.9
D 7 238 154710 846.49 760 737 181.9

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