ASTROSAT CZTI

Data Quality Report

Orbit 35445

Creation date: 2022-04-20T23:07:28.418533
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_097T17_9000005074_35445cztM0_level2.evt modeM0/AS1A11_097T17_9000005074_35445cztM0_level2_quad_clean.evt
Size (bytes)497,888,64084,908,160
Size474.8 MB 81.0 MB
Events in quadrant A2,648,952556,771
Events in quadrant B4,586,098550,499
Events in quadrant C4,089,838537,883
Events in quadrant D3,371,613531,772

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117193
B0176862
C01572010
D0139322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A564350.088605%
B56432624.642920%
C56413916.931395%
D56431953.455609%

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 7256 5644 0 0 0.00% 0.00%
B 7256 5644 140 140 1.93% 2.48%
C 7256 5643 264 264 3.64% 4.68%
D 7256 5644 153 153 2.11% 2.71%

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 125663 962.18 647 633 129.9
A 13 6 17832 132.36 647 633 129.9
A 3 137 6932 48.47 647 633 129.9
B 4 251 1568942 12661.88 638 621 123.9
B 5 236 205353 1652.91 638 621 123.9
B 5 172 167592 1348.04 638 621 123.9
C 4 254 678499 4677.06 619 624 144.9
C 0 10 641256 4420.1 619 624 144.9
C 15 214 224711 1546.11 619 624 144.9
D 13 249 248771 1629.28 627 610 152.3
D 7 80 134256 877.44 627 610 152.3
D 2 250 106127 692.77 627 610 152.3

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