ASTROSAT CZTI

Data Quality Report

Orbit 00198

Creation date: 2024-06-27T13:57:46.411178
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/AS1P01_140T01_9000000018_00198cztM0_level2.evt modeM0/AS1P01_140T01_9000000018_00198cztM0_level2_quad_clean.evt
Size (bytes)1,039,867,20089,498,880
Size991.7 MB 85.4 MB
Events in quadrant A7,418,724589,516
Events in quadrant B7,340,435596,308
Events in quadrant C6,800,882569,152
Events in quadrant D9,532,464533,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263983
B0261282
C0245682
D0327722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A608440.065746%
B604930.049595%
C5967210.351936%
D604070911.738411%

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 7706 6085 210 210 2.73% 3.45%
B 7706 6051 104 104 1.35% 1.72%
C 7706 5969 107 107 1.39% 1.79%
D 7706 6042 1301 1301 16.88% 21.53%

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 0 253 19423 40.97 1910 1892 427.9
A 11 242 11210 21.78 1910 1892 427.9
A 0 166 9472 17.71 1910 1892 427.9
B 8 5 68365 151.66 1865 1877 438.4
B 8 233 62584 138.47 1865 1877 438.4
B 0 183 44886 98.1 1865 1877 438.4
C 0 188 78066 162.67 1673 1733 469.2
C 10 21 40196 81.97 1673 1733 469.2
C 1 192 33990 68.74 1673 1733 469.2
D 12 249 1572862 3083.98 1674 1727 509.4
D 2 25 540517 1057.59 1674 1727 509.4
D 14 23 202047 393.21 1674 1727 509.4

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