ASTROSAT CZTI

Data Quality Report

Orbit 41515

Creation date: 2024-06-27T22:29:57.479086
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/AS1A12_035T02_9000005676_41515cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41515cztM0_level2_quad_clean.evt
Size (bytes)338,480,64090,815,040
Size322.8 MB 86.6 MB
Events in quadrant A3,027,473622,666
Events in quadrant B2,788,687624,545
Events in quadrant C3,105,947576,014
Events in quadrant D3,186,998548,812

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123173
B0118982
C0125752
D0132892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5395250.463392%
B5395771.427247%
C53952184.040778%
D53951643.039852%

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 7157 5396 12 12 0.17% 0.22%
B 7157 5396 58 58 0.81% 1.07%
C 7157 5396 222 222 3.10% 4.11%
D 7157 5396 152 152 2.12% 2.82%

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 549285 4442.07 606 592 123.5
A 2 79 51911 415.46 606 592 123.5
A 14 235 42271 337.42 606 592 123.5
B 0 190 133242 1164.81 597 580 113.9
B 0 186 128794 1125.75 597 580 113.9
B 0 245 127480 1114.22 597 580 113.9
C 0 10 572564 4311.09 569 573 132.7
C 15 214 221579 1665.72 569 573 132.7
C 7 220 50896 379.28 569 573 132.7
D 2 249 259807 1797.73 582 566 144.2
D 12 233 173780 1201.17 582 566 144.2
D 1 52 133968 925.09 582 566 144.2

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