ASTROSAT CZTI

Data Quality Report

Orbit 16767

Creation date: 2024-06-27T17:27:23.874478
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/AS1A05_004T05_9000002488_16767cztM0_level2.evt modeM0/AS1A05_004T05_9000002488_16767cztM0_level2_quad_clean.evt
Size (bytes)612,089,280102,896,640
Size583.7 MB 98.1 MB
Events in quadrant A3,381,831665,417
Events in quadrant B3,722,978666,114
Events in quadrant C5,817,825640,255
Events in quadrant D5,112,836628,719

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151863
B0159802
C0222482
D0202132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7408190.256479%
B7408560.755940%
C74084245.723542%
D74083334.495140%

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 7820 7411 0 0 0.00% 0.00%
B 7820 7411 11 11 0.14% 0.15%
C 7820 7411 69 69 0.88% 0.93%
D 7820 7411 238 238 3.04% 3.21%

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 3 1 10859 56.24 874 855 177.9
A 0 226 7715 38.56 874 855 177.9
A 12 194 6573 32.14 874 855 177.9
B 15 35 163221 969.27 875 850 167.5
B 3 209 32729 190.3 875 850 167.5
B 5 236 30736 178.4 875 850 167.5
C 3 233 2328834 11867.74 837 843 196.2
C 14 238 129237 654.53 837 843 196.2
C 0 207 87182 440.14 837 843 196.2
D 11 176 702252 3420.69 840 815 205.1
D 1 52 602465 2934.06 840 815 205.1
D 13 232 217172 1055.11 840 815 205.1

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