ASTROSAT CZTI

Data Quality Report

Orbit 28790

Creation date: 2024-06-27T19:56:22.050415
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/AS1A10_103T01_9000004132_28790cztM0_level2.evt modeM0/AS1A10_103T01_9000004132_28790cztM0_level2_quad_clean.evt
Size (bytes)603,792,00097,683,840
Size575.8 MB 93.2 MB
Events in quadrant A3,266,730650,514
Events in quadrant B3,329,474673,846
Events in quadrant C3,659,196650,562
Events in quadrant D7,626,740566,156

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131981
B0135021
C0148441
D0268991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5967330.553042%
B5967751.256913%
C59681372.295576%
D5968112218.800268%

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 7312 5967 1 1 0.01% 0.02%
B 7312 5967 13 13 0.18% 0.22%
C 7313 5968 8 8 0.11% 0.13%
D 7313 5968 1076 1076 14.71% 18.03%

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 14 235 128385 806.75 797 783 158.2
A 1 113 45969 285.68 797 783 158.2
A 13 254 11234 66.07 797 783 158.2
B 5 172 123512 840.46 800 782 146.0
B 10 246 21130 139.34 800 782 146.0
B 0 229 20691 136.34 800 782 146.0
C 3 233 314376 1712.04 794 803 183.2
C 14 238 147883 803.03 794 803 183.2
C 15 208 42803 229.31 794 803 183.2
D 1 52 2860985 16475.33 736 718 173.6
D 8 195 996469 5735.59 736 718 173.6
D 13 104 908452 5228.61 736 718 173.6

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