ASTROSAT CZTI

Data Quality Report

Orbit 18748

Creation date: 2024-06-27T17:54:19.455576
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_156T01_9000002804_18748cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18748cztM0_level2_quad_clean.evt
Size (bytes)577,100,160106,433,280
Size550.4 MB 101.5 MB
Events in quadrant A3,958,357670,665
Events in quadrant B4,063,114677,395
Events in quadrant C4,418,257656,663
Events in quadrant D4,482,445650,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170862
B0173382
C0184542
D0189992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81771111.357466%
B81781712.090976%
C81783584.377598%
D81782673.264857%

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 9437 8179 1 1 0.01% 0.01%
B 9438 8180 5 5 0.05% 0.06%
C 9438 8180 44 44 0.47% 0.54%
D 9438 8180 137 137 1.45% 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 15 192 38172 182.63 1009 985 203.6
A 15 191 18082 83.97 1009 985 203.6
A 13 254 14835 68.02 1009 985 203.6
B 15 201 28638 142.83 1007 979 193.6
B 12 111 23364 115.6 1007 979 193.6
B 3 64 20726 101.98 1007 979 193.6
C 3 233 487551 2155.94 966 971 225.7
C 14 238 148675 654.45 966 971 225.7
C 9 54 11561 46.92 966 971 225.7
D 14 34 585442 2464.03 979 950 237.2
D 13 168 100574 419.98 979 950 237.2
D 7 38 69215 287.78 979 950 237.2

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