ASTROSAT CZTI

Data Quality Report

Orbit 19917

Creation date: 2024-06-27T18:08:45.026314
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_064T01_9000002964_19917cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19917cztM0_level2_quad_clean.evt
Size (bytes)729,936,00095,811,840
Size696.1 MB 91.4 MB
Events in quadrant A2,852,287716,235
Events in quadrant B4,646,057714,301
Events in quadrant C4,920,689688,758
Events in quadrant D9,296,404376,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121081
B0178774
C0185801
D0314931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5780270.467128%
B57801372.370242%
C578058010.034602%
D5780310053.633218%

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 7105 5781 2 2 0.03% 0.03%
B 7105 5780 63 63 0.89% 1.09%
C 7105 5780 317 317 4.46% 5.48%
D 7104 5779 2673 2673 37.63% 46.25%

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 10 253 53084 368.93 716 702 142.0
A 8 205 22334 152.36 716 702 142.0
A 8 35 12807 85.25 716 702 142.0
B 3 112 1604145 12108.29 719 703 132.4
B 4 171 64436 481.28 719 703 132.4
B 0 197 40225 298.45 719 703 132.4
C 4 254 1246843 7819.97 692 698 159.4
C 9 221 805389 5049.7 692 698 159.4
C 14 238 107603 670.86 692 698 159.4
D 7 38 4782556 42769.36 458 443 111.8
D 12 218 1254369 11214.63 458 443 111.8
D 2 184 1193552 10670.7 458 443 111.8

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