ASTROSAT CZTI

Data Quality Report

Orbit 32408

Creation date: 2024-06-27T20:39:52.685405
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/AS1T04_059T01_9000004704_32408cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32408cztM0_level2_quad_clean.evt
Size (bytes)872,236,80074,171,520
Size831.8 MB 70.7 MB
Events in quadrant A2,879,731568,631
Events in quadrant B5,720,347543,699
Events in quadrant C13,549,900219,221
Events in quadrant D3,885,617518,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121582
B0208651
C0440821
D0151651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5646420.743889%
B56463215.685441%
C5646492387.194474%
D56461252.213957%

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 6906 5647 4 4 0.06% 0.07%
B 6906 5647 176 176 2.55% 3.12%
C 6906 5647 4270 4270 61.83% 75.62%
D 6906 5647 101 101 1.46% 1.79%

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 12 96 25806 170.7 733 719 147.0
A 13 254 11410 72.74 733 719 147.0
A 15 174 9024 56.51 733 719 147.0
B 6 159 1668373 12463.85 710 693 133.8
B 4 80 800440 5977.12 710 693 133.8
B 5 172 361917 2699.7 710 693 133.8
C 3 233 12150976 168492.66 310 312 72.1
C 0 10 61275 845.37 310 312 72.1
C 14 238 56633 781.0 310 312 72.1
D 8 195 489012 2988.51 691 673 163.4
D 1 47 378049 2309.45 691 673 163.4
D 12 218 118388 720.39 691 673 163.4

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