ASTROSAT CZTI

Data Quality Report

Orbit 38176

Creation date: 2024-06-27T21:49:22.229000
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/AS1A07_145T01_9000005370_38176cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38176cztM0_level2_quad_clean.evt
Size (bytes)513,866,88087,505,920
Size490.1 MB 83.5 MB
Events in quadrant A2,855,608633,854
Events in quadrant B2,937,160642,319
Events in quadrant C3,937,978588,007
Events in quadrant D8,863,205400,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117423
B0124652
C0150362
D0301662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5507180.326857%
B5507961.743236%
C55073897.063737%
D5507186533.865989%

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 7089 5506 7 7 0.10% 0.13%
B 7089 5506 47 47 0.66% 0.85%
C 7089 5506 356 356 5.02% 6.47%
D 7089 5506 1990 1990 28.07% 36.14%

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 10 83 376968 2976.77 623 610 126.4
A 12 189 35266 274.11 623 610 126.4
A 9 143 16963 129.34 623 610 126.4
B 5 184 192474 1616.76 613 597 118.7
B 12 18 184848 1552.51 613 597 118.7
B 0 183 39146 324.82 613 597 118.7
C 14 254 1384096 10102.72 586 591 136.9
C 15 214 225072 1639.22 586 591 136.9
C 3 233 20249 143.55 586 591 136.9
D 12 227 6291846 48714.99 525 510 129.1
D 12 217 204097 1576.41 525 510 129.1
D 7 55 151413 1168.47 525 510 129.1

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