ASTROSAT CZTI

Data Quality Report

Orbit 20024

Creation date: 2024-06-27T18:10:14.639973
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/AS1C04_001T01_9000002984_20024cztM0_level2.evt modeM0/AS1C04_001T01_9000002984_20024cztM0_level2_quad_clean.evt
Size (bytes)683,190,720123,500,160
Size651.5 MB 117.8 MB
Events in quadrant A3,912,445831,203
Events in quadrant B4,116,519828,742
Events in quadrant C3,701,429824,481
Events in quadrant D8,431,898713,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170382
B0175292
C0162712
D0305452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77861151.477010%
B77871231.579556%
C77871081.386927%
D7787164721.150636%

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 8446 7788 46 46 0.54% 0.59%
B 8447 7789 27 27 0.32% 0.35%
C 8447 7789 1 1 0.01% 0.01%
D 8447 7789 1467 1467 17.37% 18.83%

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 14 254 175946 948.85 911 893 184.5
A 14 238 140384 756.09 911 893 184.5
A 5 16 68025 363.88 911 893 184.5
B 0 197 130620 744.58 913 889 174.2
B 0 189 121686 693.3 913 889 174.2
B 0 244 104193 592.9 913 889 174.2
C 14 238 138569 659.99 891 895 208.6
C 3 233 53213 250.8 891 895 208.6
C 0 207 30962 144.14 891 895 208.6
D 7 38 2125937 10743.46 814 790 197.8
D 1 52 1547976 7821.64 814 790 197.8
D 7 238 912778 4610.46 814 790 197.8

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