ASTROSAT CZTI

Data Quality Report

Orbit 21522

Creation date: 2024-06-27T18:28:56.770391
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/AS1A05_144T02_9000003176_21522cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21522cztM0_level2_quad_clean.evt
Size (bytes)402,753,60096,768,000
Size384.1 MB 92.3 MB
Events in quadrant A2,716,866642,991
Events in quadrant B2,834,177665,665
Events in quadrant C2,752,612637,462
Events in quadrant D3,517,900598,628

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132881743
B0135991682
C0132951621
D0173553226

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013012
B013016
C013014
D013020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5514320.580341%
B5560460.827338%
C5557540.971747%
D53571262.352063%

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 7616 6095 0 0 0.00% 0.00%
B 7616 6125 3 3 0.04% 0.05%
C 7617 6146 0 0 0.00% 0.00%
D 7617 5984 69 69 0.91% 1.15%

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 12 96 10582 71.27 699 686 138.9
A 15 48 10068 67.57 699 686 138.9
A 13 254 9321 62.19 699 686 138.9
B 3 64 24045 177.53 707 691 131.6
B 4 190 15984 116.25 707 691 131.6
B 12 111 15214 110.4 707 691 131.6
C 14 238 111728 717.32 675 680 154.8
C 3 233 6849 39.85 675 680 154.8
C 13 61 4763 26.37 675 680 154.8
D 1 52 792677 4792.24 641 626 165.3
D 14 35 102475 616.23 641 626 165.3
D 7 38 89876 540.0 641 626 165.3

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