ASTROSAT CZTI

Data Quality Report

Orbit 35872

Creation date: 2022-06-08T20:27:35.326489
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_080T01_9000005146_35872cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35872cztM0_level2_quad_clean.evt
Size (bytes)430,548,48065,036,160
Size410.6 MB 62.0 MB
Events in quadrant A3,332,674412,885
Events in quadrant B2,883,077410,869
Events in quadrant C3,046,358405,045
Events in quadrant D3,433,125385,145

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132978
B0114605
C0117762
D0137387

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5064340.671406%
B5064681.342812%
C50661322.605606%
D50641062.093207%

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 7128 5066 14 14 0.20% 0.28%
B 7128 5066 41 41 0.58% 0.81%
C 7128 5067 109 109 1.53% 2.15%
D 7128 5066 81 81 1.14% 1.60%

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 7 48 429481 3339.29 638 628 128.4
A 15 169 264831 2057.23 638 628 128.4
A 10 83 156872 1216.6 638 628 128.4
B 5 172 226098 1902.25 626 611 118.5
B 5 255 66317 554.31 626 611 118.5
B 15 85 63289 528.76 626 611 118.5
C 0 10 246053 1749.69 609 616 140.3
C 15 214 210184 1493.99 609 616 140.3
C 1 23 173837 1234.87 609 616 140.3
D 8 195 392378 2610.78 616 601 150.1
D 13 249 236366 1571.13 616 601 150.1
D 7 223 130977 868.82 616 601 150.1

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