ASTROSAT CZTI

Data Quality Report

Orbit 33880

Creation date: 2024-06-27T20:53:37.100320
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_003T10_9000004838_33880cztM0_level2.evt modeM0/AS1A11_003T10_9000004838_33880cztM0_level2_quad_clean.evt
Size (bytes)1,082,134,080183,090,240
Size1.0 GB 174.6 MB
Events in quadrant A6,371,8461,179,169
Events in quadrant B7,412,8661,175,431
Events in quadrant C8,265,0031,149,316
Events in quadrant D9,795,3181,092,570

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279874
B0309543
C0326503
D0383163

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13735300.218420%
B137352021.470695%
C137353152.293411%
D137355373.909720%

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 17854 13738 11 11 0.06% 0.08%
B 17854 13738 103 103 0.58% 0.75%
C 17854 13738 250 250 1.40% 1.82%
D 17854 13738 446 446 2.50% 3.25%

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 15 169 109433 338.7 1605 1572 318.5
A 13 6 38210 115.05 1605 1572 318.5
A 13 254 23542 68.99 1605 1572 318.5
B 5 172 607126 2023.0 1591 1549 299.3
B 5 255 116478 383.93 1591 1549 299.3
B 4 251 93646 307.66 1591 1549 299.3
C 0 10 961225 2685.17 1557 1567 357.4
C 15 214 580664 1620.34 1557 1567 357.4
C 0 207 315252 877.71 1557 1567 357.4
D 12 235 1094199 2915.43 1544 1500 374.8
D 2 250 819722 2183.1 1544 1500 374.8
D 8 195 763728 2033.7 1544 1500 374.8

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