ASTROSAT CZTI

Data Quality Report

Orbit 36287

Creation date: 2022-06-14T21:03:15.154582
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/AS1A10_071T33_9000005186_36287cztM0_level2.evt modeM0/AS1A10_071T33_9000005186_36287cztM0_level2_quad_clean.evt
Size (bytes)488,128,32078,405,120
Size465.5 MB 74.8 MB
Events in quadrant A2,846,210520,736
Events in quadrant B4,885,169479,566
Events in quadrant C2,900,983511,920
Events in quadrant D3,788,198487,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119403
B0180852
C0118632
D0148152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5337621.161701%
B533775814.202736%
C5337681.274124%
D53372765.171445%

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 7129 5338 48 48 0.67% 0.90%
B 7129 5338 538 538 7.55% 10.08%
C 7129 5338 53 53 0.74% 0.99%
D 7129 5338 270 270 3.79% 5.06%

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 9 143 188143 1482.4 632 621 126.5
A 10 83 185129 1458.57 632 621 126.5
A 13 6 19000 145.29 632 621 126.5
B 4 171 1547893 13615.55 585 569 113.6
B 5 172 423714 3723.43 585 569 113.6
B 8 128 229497 2014.43 585 569 113.6
C 15 214 223690 1558.96 614 621 143.1
C 0 10 206918 1441.75 614 621 143.1
C 0 207 56167 388.19 614 621 143.1
D 13 171 534922 3576.45 608 590 149.4
D 12 6 499589 3339.95 608 590 149.4
D 13 249 108294 720.9 608 590 149.4

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