ASTROSAT CZTI

Data Quality Report

Orbit 34989

Creation date: 2022-03-19T19:57:52.094126
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_123T11_9000005014_34989cztM0_level2.evt modeM0/AS1A10_123T11_9000005014_34989cztM0_level2_quad_clean.evt
Size (bytes)380,462,40074,511,360
Size362.8 MB 71.1 MB
Events in quadrant A2,281,592475,969
Events in quadrant B2,459,610490,278
Events in quadrant C2,665,126486,678
Events in quadrant D3,780,256457,160

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100893
B0105342
C0108062
D0145722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493920.040494%
B4939300.607410%
C4939851.720996%
D49391022.065195%

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 6972 4940 0 0 0.00% 0.00%
B 6972 4940 13 13 0.19% 0.26%
C 6972 4940 64 64 0.92% 1.30%
D 6972 4940 85 85 1.22% 1.72%

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 70089 608.02 568 559 114.4
A 13 6 11209 93.13 568 559 114.4
A 13 254 8282 67.54 568 559 114.4
B 5 172 78885 716.95 572 557 109.3
B 5 255 59211 536.87 572 557 109.3
B 15 85 29753 267.24 572 557 109.3
C 0 10 230102 1774.09 559 564 129.4
C 15 214 206757 1593.66 559 564 129.4
C 15 159 23206 175.0 559 564 129.4
D 8 195 1273745 9369.97 553 539 135.9
D 13 249 179357 1315.98 553 539 135.9
D 1 47 61620 449.52 553 539 135.9

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