ASTROSAT CZTI

Data Quality Report

Orbit 31730

Creation date: 2024-06-27T20:32:02.023944
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/AS1T04_034T01_9000004632_31730cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31730cztM0_level2_quad_clean.evt
Size (bytes)712,728,00094,608,000
Size679.7 MB 90.2 MB
Events in quadrant A5,753,726595,988
Events in quadrant B6,575,032623,229
Events in quadrant C4,270,452622,099
Events in quadrant D4,579,731602,634

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213541
B0236494
C0168231
D0176201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A602879113.122097%
B602772712.062386%
C60273315.491953%
D60272454.065041%

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 7368 6028 438 438 5.94% 7.27%
B 7367 6028 258 258 3.50% 4.28%
C 7367 6028 77 77 1.05% 1.28%
D 7367 6027 142 142 1.93% 2.36%

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 0 13 2540186 15413.95 832 818 164.7
A 13 254 11934 67.47 832 818 164.7
A 3 137 7557 40.91 832 818 164.7
B 6 159 1666096 10681.42 833 816 155.9
B 4 80 1312742 8414.94 833 816 155.9
B 0 190 174994 1117.21 833 816 155.9
C 0 10 740507 3790.21 840 851 195.1
C 14 238 136936 697.34 840 851 195.1
C 3 233 44634 224.36 840 851 195.1
D 8 195 823818 4122.28 851 834 199.6
D 12 233 265194 1324.16 851 834 199.6
D 13 249 139550 694.82 851 834 199.6

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