ASTROSAT CZTI

Data Quality Report

Orbit 36321

Creation date: 2022-06-17T04:45:10.649475
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/AS1A11_089T02_9000005188_36321cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36321cztM0_level2_quad_clean.evt
Size (bytes)533,013,12054,927,360
Size508.3 MB 52.4 MB
Events in quadrant A2,430,944360,748
Events in quadrant B6,715,984310,877
Events in quadrant C2,736,892341,576
Events in quadrant D3,923,336302,449

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104223
B0233682
C0112012
D0150122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494660.121310%
B4946155631.459765%
C49461202.426203%
D494656011.322281%

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 7009 4947 0 0 0.00% 0.00%
B 7008 4946 1325 1325 18.91% 26.79%
C 7009 4947 108 108 1.54% 2.18%
D 7009 4947 536 536 7.65% 10.83%

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 177104 1528.75 569 560 115.5
A 9 143 25119 212.66 569 560 115.5
A 13 6 11316 93.14 569 560 115.5
B 5 172 2179206 23084.58 495 484 94.4
B 5 236 1351746 14317.25 495 484 94.4
B 4 171 1051956 11140.84 495 484 94.4
C 0 10 380023 3004.16 540 547 126.3
C 15 214 208715 1647.99 540 547 126.3
C 15 159 26041 201.83 540 547 126.3
D 12 6 1477897 11597.88 512 495 127.4
D 13 171 159262 1246.35 512 495 127.4
D 2 250 101246 790.91 512 495 127.4

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