ASTROSAT CZTI

Data Quality Report

Orbit 00204

Creation date: 2024-06-27T13:57:51.003453
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_00204cztM0_level2.evt modeM0/AS1P01_140T01_9000000018_00204cztM0_level2_quad_clean.evt
Size (bytes)900,259,20069,151,680
Size858.6 MB 65.9 MB
Events in quadrant A6,690,442425,981
Events in quadrant B6,574,771435,780
Events in quadrant C6,596,799425,384
Events in quadrant D7,019,291403,568

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236118
B0236118
C0236118
D0236118

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03819
B03819
C03819
D04020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04797923992
B04716023586
C04736223683
D04989424949

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A576270.121486%
B576120.034716%
C576220.034710%
D5762921.596668%

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 7384 5764 157 157 2.13% 2.72%
B 7384 5764 55 55 0.74% 0.95%
C 7384 5764 45 45 0.61% 0.78%
D 7384 5764 301 301 4.08% 5.22%

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 6 35855 91.66 1693 1680 372.8
A 13 17 27400 68.98 1693 1680 372.8
A 0 253 26472 66.5 1693 1680 372.8
B 5 2 17547 39.89 1711 1717 396.9
B 8 5 15974 35.93 1711 1717 396.9
B 15 69 6143 11.15 1711 1717 396.9
C 0 186 405637 925.61 1570 1627 436.5
C 1 1 23219 49.47 1570 1627 436.5
C 9 188 7260 12.91 1570 1627 436.5
D 1 4 357867 771.63 1521 1573 461.7
D 13 117 252718 543.9 1521 1573 461.7
D 10 229 127687 273.13 1521 1573 461.7

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