ASTROSAT CZTI

Data Quality Report

Orbit 24968

Creation date: 2024-06-27T19:12:04.664586
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/AS1T03_200T01_9000003654_24968cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24968cztM0_level2_quad_clean.evt
Size (bytes)458,112,960132,868,800
Size436.9 MB 126.7 MB
Events in quadrant A2,990,155909,350
Events in quadrant B3,334,474943,181
Events in quadrant C3,212,002896,139
Events in quadrant D3,924,756851,582

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127702
B0137682
C0133712
D0158002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6082230.378165%
B6082811.331799%
C60821121.841500%
D60821141.874383%

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 7452 6083 0 0 0.00% 0.00%
B 7452 6083 18 18 0.24% 0.30%
C 7452 6083 12 12 0.16% 0.20%
D 7452 6083 83 83 1.11% 1.36%

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 13 254 8704 51.48 774 760 154.3
A 0 226 6687 38.41 774 760 154.3
A 3 137 6386 36.46 774 760 154.3
B 3 64 137001 955.7 783 765 142.6
B 5 172 59645 413.05 783 765 142.6
B 10 246 29634 202.52 783 765 142.6
C 14 238 124097 713.03 754 760 173.0
C 7 247 86936 498.19 754 760 173.0
C 0 10 57547 328.29 754 760 173.0
D 1 52 840871 4694.25 746 725 179.0
D 2 244 94751 525.36 746 725 179.0
D 8 195 76462 423.17 746 725 179.0

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