ASTROSAT CZTI

Data Quality Report

Orbit 29227

Creation date: 2024-06-27T20:01:44.876143
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/AS1A10_102T02_9000004200_29227cztM0_level2.evt modeM0/AS1A10_102T02_9000004200_29227cztM0_level2_quad_clean.evt
Size (bytes)557,769,60080,631,360
Size531.9 MB 76.9 MB
Events in quadrant A3,038,498512,495
Events in quadrant B3,590,963512,730
Events in quadrant C5,758,407494,207
Events in quadrant D4,089,587494,543

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127851
B0147001
C0215561
D0162412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6125621.012245%
B61261232.007835%
C61264918.015018%
D61252694.391837%

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 7225 6126 0 0 0.00% 0.00%
B 7226 6127 23 23 0.32% 0.38%
C 7226 6127 33 33 0.46% 0.54%
D 7225 6126 102 102 1.41% 1.67%

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 15 174 22272 139.37 777 763 154.3
A 0 13 16855 104.27 777 763 154.3
A 13 254 12188 74.03 777 763 154.3
B 10 245 198000 1377.07 765 747 143.2
B 0 229 178730 1242.54 765 747 143.2
B 0 183 108523 752.41 765 747 143.2
C 3 233 2748388 16286.74 736 742 168.7
C 14 238 120692 711.01 736 742 168.7
C 2 114 15031 84.7 736 742 168.7
D 1 52 743413 4218.89 747 727 176.0
D 8 195 265814 1505.85 747 727 176.0
D 13 104 94643 533.5 747 727 176.0

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