ASTROSAT CZTI

Data Quality Report

Orbit 04359

Creation date: 2024-06-27T14:40:51.486887
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/AS1G05_219T01_9000000540_04359cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04359cztM0_level2_quad_clean.evt
Size (bytes)150,966,72030,464,640
Size144.0 MB 29.1 MB
Events in quadrant A1,321,795194,970
Events in quadrant B1,102,480200,475
Events in quadrant C1,030,181195,399
Events in quadrant D987,490194,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0402
C0400
D0404

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440271
B04688234
C04689376
D04330234

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18731387.367859%
B187250.267094%
C1873412.189002%
D187560.320000%

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 1978 1932 90 90 4.55% 4.66%
B 1977 1940 2 2 0.10% 0.10%
C 1978 1925 33 33 1.67% 1.71%
D 1978 1938 5 5 0.25% 0.26%

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 13 441802 9695.54 214 209 45.5
A 13 251 36661 800.33 214 209 45.5
A 3 1 6761 143.85 214 209 45.5
B 0 187 101550 2286.27 218 214 44.3
B 15 204 75815 1705.66 218 214 44.3
B 14 167 35000 784.82 218 214 44.3
C 9 247 172581 3429.09 209 210 50.3
C 9 16 36331 718.58 209 210 50.3
C 12 4 2646 48.46 209 210 50.3
D 13 53 58699 1090.1 215 209 53.7
D 2 136 46123 855.72 215 209 53.7
D 4 95 9016 164.14 215 209 53.7

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