ASTROSAT CZTI

Data Quality Report

Orbit 36409

Creation date: 2022-06-28T13:13:42.423055
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/AS1T04_084T01_9000005198_36409cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36409cztM0_level2_quad_clean.evt
Size (bytes)447,742,08081,028,800
Size427.0 MB 77.3 MB
Events in quadrant A2,627,366531,919
Events in quadrant B3,837,974530,087
Events in quadrant C2,919,775523,164
Events in quadrant D3,808,214490,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112453
B0149882
C0118412
D0149192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5398100.185254%
B53981673.093738%
C53981132.093368%
D53982554.723972%

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 7101 5399 3 3 0.04% 0.06%
B 7101 5399 93 93 1.31% 1.72%
C 7101 5399 71 71 1.00% 1.32%
D 7101 5399 254 254 3.58% 4.70%

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 184551 1449.76 626 614 126.9
A 13 254 10240 75.87 626 614 126.9
A 3 137 6564 46.9 626 614 126.9
B 5 255 462630 3856.84 616 600 119.8
B 5 172 307483 2561.74 616 600 119.8
B 0 183 262781 2188.58 616 600 119.8
C 0 10 303581 2137.66 605 609 141.7
C 15 214 230222 1620.07 605 609 141.7
C 0 207 24656 169.67 605 609 141.7
D 12 6 655999 4400.48 603 585 148.9
D 13 249 315566 2114.79 603 585 148.9
D 2 153 202167 1353.43 603 585 148.9

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